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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.sql.dialect</a></div> |
| <h1 title="Class MysqlSqlDialect" class="title">Class MysqlSqlDialect</h1> |
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| <div class="inheritance"><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">org.apache.calcite.sql.SqlDialect</a> |
| <div class="inheritance">org.apache.calcite.sql.dialect.MysqlSqlDialect</div> |
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| <section class="description"> |
| <hr> |
| <pre>public class <span class="typeNameLabel">MysqlSqlDialect</span> |
| extends <a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></pre> |
| <div class="block">A <code>SqlDialect</code> implementation for the MySQL database.</div> |
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| <h2>Nested Class Summary</h2> |
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| <h2>Nested classes/interfaces inherited from class org.apache.calcite.sql.<a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></h2> |
| <a id="nested.classes.inherited.from.class.org.apache.calcite.sql.SqlDialect"> |
| <!-- --> |
| </a><code><a href="../SqlDialect.CalendarPolicy.html" title="enum in org.apache.calcite.sql">SqlDialect.CalendarPolicy</a>, <a href="../SqlDialect.Context.html" title="interface in org.apache.calcite.sql">SqlDialect.Context</a>, <a href="../SqlDialect.DatabaseProduct.html" title="enum in org.apache.calcite.sql">SqlDialect.DatabaseProduct</a>, <a href="../SqlDialect.FakeUtil.html" title="class in org.apache.calcite.sql">SqlDialect.FakeUtil</a></code></div> |
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| <h2>Field Summary</h2> |
| <div class="memberSummary"> |
| <table> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <thead> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Field</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#DEFAULT">DEFAULT</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../SqlDialect.Context.html" title="interface in org.apache.calcite.sql">SqlDialect.Context</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#DEFAULT_CONTEXT">DEFAULT_CONTEXT</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../SqlFunction.html" title="class in org.apache.calcite.sql">SqlFunction</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#ISNULL_FUNCTION">ISNULL_FUNCTION</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">MySQL specific function.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../rel/type/RelDataTypeSystem.html" title="interface in org.apache.calcite.rel.type">RelDataTypeSystem</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#MYSQL_TYPE_SYSTEM">MYSQL_TYPE_SYSTEM</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">MySQL type system.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <div class="inheritedList"> |
| <h3>Fields inherited from class org.apache.calcite.sql.<a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></h3> |
| <a id="fields.inherited.from.class.org.apache.calcite.sql.SqlDialect"> |
| <!-- --> |
| </a><code><a href="../SqlDialect.html#BUILT_IN_OPERATORS_LIST">BUILT_IN_OPERATORS_LIST</a>, <a href="../SqlDialect.html#EMPTY_CONTEXT">EMPTY_CONTEXT</a>, <a href="../SqlDialect.html#identifierEndQuoteString">identifierEndQuoteString</a>, <a href="../SqlDialect.html#identifierEscapedQuote">identifierEscapedQuote</a>, <a href="../SqlDialect.html#identifierQuoteString">identifierQuoteString</a>, <a href="../SqlDialect.html#literalEndQuoteString">literalEndQuoteString</a>, <a href="../SqlDialect.html#literalEscapedQuote">literalEscapedQuote</a>, <a href="../SqlDialect.html#literalQuoteString">literalQuoteString</a>, <a href="../SqlDialect.html#LOGGER">LOGGER</a>, <a href="../SqlDialect.html#nullCollation">nullCollation</a></code></div> |
| </section> |
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| <h2>Constructor Summary</h2> |
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| <table> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <thead> |
| <tr> |
| <th class="colFirst" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.sql.SqlDialect.Context)">MysqlSqlDialect</a></span>​(<a href="../SqlDialect.Context.html" title="interface in org.apache.calcite.sql">SqlDialect.Context</a> context)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a MysqlSqlDialect.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
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| </section> |
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| <h2>Method Summary</h2> |
| <div class="memberSummary"> |
| <div role="tablist" aria-orientation="horizontal"><button role="tab" aria-selected="true" aria-controls="memberSummary_tabpanel" tabindex="0" onkeydown="switchTab(event)" id="t0" class="activeTableTab">All Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t2" class="tableTab" onclick="show(2);">Instance Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t4" class="tableTab" onclick="show(8);">Concrete Methods</button></div> |
| <div id="memberSummary_tabpanel" role="tabpanel"> |
| <table aria-labelledby="t0"> |
| <thead> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="altColor" id="i0"> |
| <td class="colFirst"><code>@Nullable <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#emulateNullDirection(org.apache.calcite.sql.SqlNode,boolean,boolean)">emulateNullDirection</a></span>​(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> node, |
| boolean nullsFirst, |
| boolean desc)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the SqlNode for emulating the null direction for the given field |
| or <code>null</code> if no emulation needs to be done.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i1"> |
| <td class="colFirst"><code><a href="../SqlDialect.CalendarPolicy.html" title="enum in org.apache.calcite.sql">SqlDialect.CalendarPolicy</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCalendarPolicy()">getCalendarPolicy</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor" id="i2"> |
| <td class="colFirst"><code>@Nullable <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCastSpec(org.apache.calcite.rel.type.RelDataType)">getCastSpec</a></span>​(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> type)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns SqlNode for type in "cast(column as type)", which might be |
| different between databases by type name, precision etc.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i3"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#requiresAliasForFromItems()">requiresAliasForFromItems</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Whether a sub-query in the FROM clause must have an alias.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i4"> |
| <td class="colFirst"><code><a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rewriteSingleValueExpr(org.apache.calcite.sql.SqlNode)">rewriteSingleValueExpr</a></span>​(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> aggCall)</code></th> |
| <td class="colLast"> |
| <div class="block">Rewrite SINGLE_VALUE into expression based on database variants |
| E.g.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i5"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#supportsAggregateFunction(org.apache.calcite.sql.SqlKind)">supportsAggregateFunction</a></span>​(<a href="../SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> kind)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor" id="i6"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#supportsAliasedValues()">supportsAliasedValues</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether the dialect supports VALUES in a sub-query with |
| and an "AS t(column, ...)" values to define column names.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i7"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#supportsCharSet()">supportsCharSet</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether the dialect supports character set names as part of a |
| data type, for instance <code>VARCHAR(30) CHARACTER SET `ISO-8859-1`</code>.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i8"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#supportsGroupByWithRollup()">supportsGroupByWithRollup</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether this dialect supports "WITH ROLLUP" in the "GROUP BY" |
| clause.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i9"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#supportsNestedAggregations()">supportsNestedAggregations</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether the dialect supports nested aggregations, for instance |
| <code>SELECT SUM(SUM(1)) </code>.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i10"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#unparseCall(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlCall,int,int)">unparseCall</a></span>​(<a href="../SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a> writer, |
| <a href="../SqlCall.html" title="class in org.apache.calcite.sql">SqlCall</a> call, |
| int leftPrec, |
| int rightPrec)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor" id="i11"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#unparseOffsetFetch(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)">unparseOffsetFetch</a></span>​(<a href="../SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a> writer, |
| @Nullable <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> offset, |
| @Nullable <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> fetch)</code></th> |
| <td class="colLast"> |
| <div class="block">Converts an offset and fetch into SQL.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i12"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#unparseSqlIntervalQualifier(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlIntervalQualifier,org.apache.calcite.rel.type.RelDataTypeSystem)">unparseSqlIntervalQualifier</a></span>​(<a href="../SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a> writer, |
| <a href="../SqlIntervalQualifier.html" title="class in org.apache.calcite.sql">SqlIntervalQualifier</a> qualifier, |
| <a href="../../rel/type/RelDataTypeSystem.html" title="interface in org.apache.calcite.rel.type">RelDataTypeSystem</a> typeSystem)</code></th> |
| <td class="colLast"> |
| <div class="block">Converts an interval qualifier to a SQL string.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| <div class="inheritedList"> |
| <h3>Methods inherited from class org.apache.calcite.sql.<a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></h3> |
| <a id="methods.inherited.from.class.org.apache.calcite.sql.SqlDialect"> |
| <!-- --> |
| </a><code><a href="../SqlDialect.html#allowsAs()">allowsAs</a>, <a href="../SqlDialect.html#configureParser(org.apache.calcite.sql.parser.SqlParser.Config)">configureParser</a>, <a href="../SqlDialect.html#configureParser(org.apache.calcite.sql.parser.SqlParser.ConfigBuilder)">configureParser</a>, <a href="../SqlDialect.html#containsNonAscii(java.lang.String)">containsNonAscii</a>, <a href="../SqlDialect.html#create(java.sql.DatabaseMetaData)">create</a>, <a href="../SqlDialect.html#defaultNullDirection(org.apache.calcite.rel.RelFieldCollation.Direction)">defaultNullDirection</a>, <a href="../SqlDialect.html#emulateJoinTypeForCrossJoin()">emulateJoinTypeForCrossJoin</a>, <a href="../SqlDialect.html#emulateNullDirectionWithIsNull(org.apache.calcite.sql.SqlNode,boolean,boolean)">emulateNullDirectionWithIsNull</a>, <a href="../SqlDialect.html#getConformance()">getConformance</a>, <a href="../SqlDialect.html#getDatabaseProduct()">getDatabaseProduct</a>, <a href="../SqlDialect.html#getNullCollation()">getNullCollation</a>, <a href="../SqlDialect.html#getProduct(java.lang.String,java.lang.String)">getProduct</a>, <a href="../SqlDialect.html#getQuotedCasing()">getQuotedCasing</a>, <a href="../SqlDialect.html#getQuoting()">getQuoting</a>, <a href="../SqlDialect.html#getSingleRowTableName()">getSingleRowTableName</a>, <a href="../SqlDialect.html#getTypeSystem()">getTypeSystem</a>, <a href="../SqlDialect.html#getUnquotedCasing()">getUnquotedCasing</a>, <a href="../SqlDialect.html#hasImplicitTableAlias()">hasImplicitTableAlias</a>, <a href="../SqlDialect.html#identifierNeedsQuote(java.lang.String)">identifierNeedsQuote</a>, <a href="../SqlDialect.html#isCaseSensitive()">isCaseSensitive</a>, <a href="../SqlDialect.html#quoteIdentifier(java.lang.String)">quoteIdentifier</a>, <a href="../SqlDialect.html#quoteIdentifier(java.lang.StringBuilder,java.lang.String)">quoteIdentifier</a>, <a href="../SqlDialect.html#quoteIdentifier(java.lang.StringBuilder,java.util.List)">quoteIdentifier</a>, <a href="../SqlDialect.html#quoteStringLiteral(java.lang.String)">quoteStringLiteral</a>, <a href="../SqlDialect.html#quoteStringLiteral(java.lang.StringBuilder,java.lang.String,java.lang.String)">quoteStringLiteral</a>, <a href="../SqlDialect.html#quoteStringLiteralUnicode(java.lang.StringBuilder,java.lang.String)">quoteStringLiteralUnicode</a>, <a href="../SqlDialect.html#quoteTimestampLiteral(java.sql.Timestamp)">quoteTimestampLiteral</a>, <a href="../SqlDialect.html#supportsAggregateFunctionFilter()">supportsAggregateFunctionFilter</a>, <a href="../SqlDialect.html#supportsDataType(org.apache.calcite.rel.type.RelDataType)">supportsDataType</a>, <a href="../SqlDialect.html#supportsFunction(org.apache.calcite.sql.SqlOperator,org.apache.calcite.rel.type.RelDataType,java.util.List)">supportsFunction</a>, <a href="../SqlDialect.html#supportsGroupByWithCube()">supportsGroupByWithCube</a>, <a href="../SqlDialect.html#supportsImplicitTypeCoercion(org.apache.calcite.rex.RexCall)">supportsImplicitTypeCoercion</a>, <a href="../SqlDialect.html#supportsOffsetFetch()">supportsOffsetFetch</a>, <a href="../SqlDialect.html#supportsWindowFunctions()">supportsWindowFunctions</a>, <a href="../SqlDialect.html#unparseDateTimeLiteral(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlAbstractDateTimeLiteral,int,int)">unparseDateTimeLiteral</a>, <a href="../SqlDialect.html#unparseFetchUsingAnsi(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)">unparseFetchUsingAnsi</a>, <a href="../SqlDialect.html#unparseFetchUsingLimit(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)">unparseFetchUsingLimit</a>, <a href="../SqlDialect.html#unparseLimit(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode)">unparseLimit</a>, <a href="../SqlDialect.html#unparseOffset(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode)">unparseOffset</a>, <a href="../SqlDialect.html#unparseSqlDatetimeArithmetic(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlCall,org.apache.calcite.sql.SqlKind,int,int)">unparseSqlDatetimeArithmetic</a>, <a href="../SqlDialect.html#unparseSqlIntervalLiteral(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlIntervalLiteral,int,int)">unparseSqlIntervalLiteral</a>, <a href="../SqlDialect.html#unparseTopN(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)">unparseTopN</a>, <a href="../SqlDialect.html#unquoteStringLiteral(java.lang.String)">unquoteStringLiteral</a></code></div> |
| <div class="inheritedList"> |
| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3> |
| <a id="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <li class="blockList"> |
| <section class="fieldDetails"><a id="field.detail"> |
| <!-- --> |
| </a> |
| <h2>Field Details</h2> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="MYSQL_TYPE_SYSTEM">MYSQL_TYPE_SYSTEM</a></h3> |
| <div class="memberSignature"><span class="modifiers">public static final</span> <span class="returnType"><a href="../../rel/type/RelDataTypeSystem.html" title="interface in org.apache.calcite.rel.type">RelDataTypeSystem</a></span> <span class="memberName">MYSQL_TYPE_SYSTEM</span></div> |
| <div class="block">MySQL type system.</div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="DEFAULT_CONTEXT">DEFAULT_CONTEXT</a></h3> |
| <div class="memberSignature"><span class="modifiers">public static final</span> <span class="returnType"><a href="../SqlDialect.Context.html" title="interface in org.apache.calcite.sql">SqlDialect.Context</a></span> <span class="memberName">DEFAULT_CONTEXT</span></div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="DEFAULT">DEFAULT</a></h3> |
| <div class="memberSignature"><span class="modifiers">public static final</span> <span class="returnType"><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></span> <span class="memberName">DEFAULT</span></div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="ISNULL_FUNCTION">ISNULL_FUNCTION</a></h3> |
| <div class="memberSignature"><span class="modifiers">public static final</span> <span class="returnType"><a href="../SqlFunction.html" title="class in org.apache.calcite.sql">SqlFunction</a></span> <span class="memberName">ISNULL_FUNCTION</span></div> |
| <div class="block">MySQL specific function.</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <li class="blockList"> |
| <section class="constructorDetails"><a id="constructor.detail"> |
| <!-- --> |
| </a> |
| <h2>Constructor Details</h2> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="<init>(org.apache.calcite.sql.SqlDialect.Context)">MysqlSqlDialect</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="memberName">MysqlSqlDialect</span>​(<span class="arguments"><a href="../SqlDialect.Context.html" title="interface in org.apache.calcite.sql">SqlDialect.Context</a> context)</span></div> |
| <div class="block">Creates a MysqlSqlDialect.</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li class="blockList"> |
| <section class="methodDetails"><a id="method.detail"> |
| <!-- --> |
| </a> |
| <h2>Method Details</h2> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="supportsCharSet()">supportsCharSet</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">boolean</span> <span class="memberName">supportsCharSet</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../SqlDialect.html#supportsCharSet()">SqlDialect</a></code></span></div> |
| <div class="block">Returns whether the dialect supports character set names as part of a |
| data type, for instance <code>VARCHAR(30) CHARACTER SET `ISO-8859-1`</code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#supportsCharSet()">supportsCharSet</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="requiresAliasForFromItems()">requiresAliasForFromItems</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">boolean</span> <span class="memberName">requiresAliasForFromItems</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../SqlDialect.html#requiresAliasForFromItems()">SqlDialect</a></code></span></div> |
| <div class="block">Whether a sub-query in the FROM clause must have an alias. |
| |
| <p>For example, in PostgreSQL, this query is legal: |
| |
| <blockquote><code>SELECT * FROM (SELECT * FROM Emp) As e</code></blockquote> |
| |
| <p>but remove the alias <code>e</code> and it is not: |
| |
| <blockquote><code>SELECT * FROM (SELECT * FROM Emp)</code></blockquote> |
| |
| <p>In Oracle, both queries are legal.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#requiresAliasForFromItems()">requiresAliasForFromItems</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="supportsAliasedValues()">supportsAliasedValues</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">boolean</span> <span class="memberName">supportsAliasedValues</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../SqlDialect.html#supportsAliasedValues()">SqlDialect</a></code></span></div> |
| <div class="block">Returns whether the dialect supports VALUES in a sub-query with |
| and an "AS t(column, ...)" values to define column names. |
| |
| <p>Currently, only Oracle does not. For this, we generate "SELECT v0 AS c0, |
| v1 AS c1 ... UNION ALL ...". We may need to refactor this method when we |
| support VALUES for other dialects.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#supportsAliasedValues()">supportsAliasedValues</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="unparseOffsetFetch(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)">unparseOffsetFetch</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">void</span> <span class="memberName">unparseOffsetFetch</span>​(<span class="arguments"><a href="../SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a> writer, |
| @Nullable <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> offset, |
| @Nullable <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> fetch)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../SqlDialect.html#unparseOffsetFetch(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)">SqlDialect</a></code></span></div> |
| <div class="block">Converts an offset and fetch into SQL. |
| |
| <p>At least one of <code>offset</code> and <code>fetch</code> must be provided. |
| |
| <p>Common options: |
| <ul> |
| <li><code>OFFSET offset ROWS FETCH NEXT fetch ROWS ONLY</code> |
| (ANSI standard SQL, Oracle, PostgreSQL, and the default) |
| <li><code>LIMIT fetch OFFSET offset</code> (Apache Hive, MySQL, Redshift) |
| </ul></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#unparseOffsetFetch(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)">unparseOffsetFetch</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>writer</code> - Writer</dd> |
| <dd><code>offset</code> - Number of rows to skip before emitting, or null</dd> |
| <dd><code>fetch</code> - Number of rows to fetch, or null</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../SqlDialect.html#unparseFetchUsingAnsi(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)"><code>SqlDialect.unparseFetchUsingAnsi(SqlWriter, SqlNode, SqlNode)</code></a>, |
| <a href="../SqlDialect.html#unparseFetchUsingLimit(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)"><code>SqlDialect.unparseFetchUsingLimit(SqlWriter, SqlNode, SqlNode)</code></a></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="emulateNullDirection(org.apache.calcite.sql.SqlNode,boolean,boolean)">emulateNullDirection</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">@Nullable <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></span> <span class="memberName">emulateNullDirection</span>​(<span class="arguments"><a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> node, |
| boolean nullsFirst, |
| boolean desc)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../SqlDialect.html#emulateNullDirection(org.apache.calcite.sql.SqlNode,boolean,boolean)">SqlDialect</a></code></span></div> |
| <div class="block">Returns the SqlNode for emulating the null direction for the given field |
| or <code>null</code> if no emulation needs to be done.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#emulateNullDirection(org.apache.calcite.sql.SqlNode,boolean,boolean)">emulateNullDirection</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>node</code> - The SqlNode representing the expression</dd> |
| <dd><code>nullsFirst</code> - Whether nulls should come first</dd> |
| <dd><code>desc</code> - Whether the sort direction is |
| <a href="../../rel/RelFieldCollation.Direction.html#DESCENDING"><code>RelFieldCollation.Direction.DESCENDING</code></a> or |
| <a href="../../rel/RelFieldCollation.Direction.html#STRICTLY_DESCENDING"><code>RelFieldCollation.Direction.STRICTLY_DESCENDING</code></a></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A SqlNode for null direction emulation or <code>null</code> if not required</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="supportsAggregateFunction(org.apache.calcite.sql.SqlKind)">supportsAggregateFunction</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">boolean</span> <span class="memberName">supportsAggregateFunction</span>​(<span class="arguments"><a href="../SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> kind)</span></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#supportsAggregateFunction(org.apache.calcite.sql.SqlKind)">supportsAggregateFunction</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="supportsNestedAggregations()">supportsNestedAggregations</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">boolean</span> <span class="memberName">supportsNestedAggregations</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../SqlDialect.html#supportsNestedAggregations()">SqlDialect</a></code></span></div> |
| <div class="block">Returns whether the dialect supports nested aggregations, for instance |
| <code>SELECT SUM(SUM(1)) </code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#supportsNestedAggregations()">supportsNestedAggregations</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="supportsGroupByWithRollup()">supportsGroupByWithRollup</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">boolean</span> <span class="memberName">supportsGroupByWithRollup</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../SqlDialect.html#supportsGroupByWithRollup()">SqlDialect</a></code></span></div> |
| <div class="block">Returns whether this dialect supports "WITH ROLLUP" in the "GROUP BY" |
| clause. |
| |
| <p>For instance, in MySQL version 5, |
| |
| <blockquote> |
| <code> |
| SELECT deptno, job, COUNT(*) AS c |
| FROM emp |
| GROUP BY deptno, job WITH ROLLUP |
| </code> |
| </blockquote> |
| |
| <p>is equivalent to standard SQL |
| |
| <blockquote> |
| <code> |
| SELECT deptno, job, COUNT(*) AS c |
| FROM emp |
| GROUP BY ROLLUP(deptno, job) |
| ORDER BY deptno, job |
| </code> |
| </blockquote> |
| |
| <p>The "WITH ROLLUP" clause was introduced in MySQL and is not standard |
| SQL. |
| |
| <p>See also <a href="../SqlDialect.html#supportsAggregateFunction(org.apache.calcite.sql.SqlKind)"><code>SqlDialect.supportsAggregateFunction(SqlKind)</code></a> applied to |
| <a href="../SqlKind.html#ROLLUP"><code>SqlKind.ROLLUP</code></a>, which returns true in MySQL 8 and higher.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#supportsGroupByWithRollup()">supportsGroupByWithRollup</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getCalendarPolicy()">getCalendarPolicy</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="../SqlDialect.CalendarPolicy.html" title="enum in org.apache.calcite.sql">SqlDialect.CalendarPolicy</a></span> <span class="memberName">getCalendarPolicy</span>()</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#getCalendarPolicy()">getCalendarPolicy</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getCastSpec(org.apache.calcite.rel.type.RelDataType)">getCastSpec</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">@Nullable <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></span> <span class="memberName">getCastSpec</span>​(<span class="arguments"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> type)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../SqlDialect.html#getCastSpec(org.apache.calcite.rel.type.RelDataType)">SqlDialect</a></code></span></div> |
| <div class="block">Returns SqlNode for type in "cast(column as type)", which might be |
| different between databases by type name, precision etc. |
| |
| <p>If this method returns null, the cast will be omitted. In the default |
| implementation, this is the case for the NULL type, and therefore |
| <code>CAST(NULL AS <nulltype>)</code> is rendered as <code>NULL</code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#getCastSpec(org.apache.calcite.rel.type.RelDataType)">getCastSpec</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="rewriteSingleValueExpr(org.apache.calcite.sql.SqlNode)">rewriteSingleValueExpr</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></span> <span class="memberName">rewriteSingleValueExpr</span>​(<span class="arguments"><a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> aggCall)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../SqlDialect.html#rewriteSingleValueExpr(org.apache.calcite.sql.SqlNode)">SqlDialect</a></code></span></div> |
| <div class="block">Rewrite SINGLE_VALUE into expression based on database variants |
| E.g. HSQLDB, MYSQL, ORACLE, etc</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#rewriteSingleValueExpr(org.apache.calcite.sql.SqlNode)">rewriteSingleValueExpr</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
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| <h3><a id="unparseCall(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlCall,int,int)">unparseCall</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">void</span> <span class="memberName">unparseCall</span>​(<span class="arguments"><a href="../SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a> writer, |
| <a href="../SqlCall.html" title="class in org.apache.calcite.sql">SqlCall</a> call, |
| int leftPrec, |
| int rightPrec)</span></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#unparseCall(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlCall,int,int)">unparseCall</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
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| <h3><a id="unparseSqlIntervalQualifier(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlIntervalQualifier,org.apache.calcite.rel.type.RelDataTypeSystem)">unparseSqlIntervalQualifier</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">void</span> <span class="memberName">unparseSqlIntervalQualifier</span>​(<span class="arguments"><a href="../SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a> writer, |
| <a href="../SqlIntervalQualifier.html" title="class in org.apache.calcite.sql">SqlIntervalQualifier</a> qualifier, |
| <a href="../../rel/type/RelDataTypeSystem.html" title="interface in org.apache.calcite.rel.type">RelDataTypeSystem</a> typeSystem)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../SqlDialect.html#unparseSqlIntervalQualifier(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlIntervalQualifier,org.apache.calcite.rel.type.RelDataTypeSystem)">SqlDialect</a></code></span></div> |
| <div class="block">Converts an interval qualifier to a SQL string. The default implementation |
| returns strings such as |
| <code>INTERVAL '1 2:3:4' DAY(4) TO SECOND(4)</code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../SqlDialect.html#unparseSqlIntervalQualifier(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlIntervalQualifier,org.apache.calcite.rel.type.RelDataTypeSystem)">unparseSqlIntervalQualifier</a></code> in class <code><a href="../SqlDialect.html" title="class in org.apache.calcite.sql">SqlDialect</a></code></dd> |
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