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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.sql.type</a></div> |
| <h2 title="Class InferTypes" class="title">Class InferTypes</h2> |
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| <pre>public abstract class <span class="typeNameLabel">InferTypes</span> |
| extends java.lang.Object</pre> |
| <div class="block">Strategies for inferring operand types.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type"><code>SqlOperandTypeInference</code></a>, |
| <a href="ReturnTypes.html" title="class in org.apache.calcite.sql.type"><code>ReturnTypes</code></a></dd> |
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| <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> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#ANY_NULLABLE">ANY_NULLABLE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Operand type-inference strategy where an unknown operand type is assumed |
| to be nullable ANY.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#BOOLEAN">BOOLEAN</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Operand type-inference strategy where an unknown operand type is assumed |
| to be boolean.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#FIRST_KNOWN">FIRST_KNOWN</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Operand type-inference strategy where an unknown operand type is derived |
| from the first operand with a known type.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#RETURN_TYPE">RETURN_TYPE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Operand type-inference strategy where an unknown operand type is derived |
| from the call's return type.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#VARCHAR_1024">VARCHAR_1024</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Operand type-inference strategy where an unknown operand type is assumed |
| to be VARCHAR(1024).</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
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| <td class="colFirst"><code>private </code></td> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">InferTypes</a></span>()</code></th> |
| <td class="colLast"> </td> |
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| <td class="colFirst"><code>static <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#explicit(java.util.List)">explicit</a></span>​(java.util.List<<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>> types)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns an <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type"><code>SqlOperandTypeInference</code></a> that returns a given list of |
| types.</div> |
| </td> |
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| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
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| <pre>public static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a> FIRST_KNOWN</pre> |
| <div class="block">Operand type-inference strategy where an unknown operand type is derived |
| from the first operand with a known type.</div> |
| </li> |
| </ul> |
| <a id="RETURN_TYPE"> |
| <!-- --> |
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| <h4>RETURN_TYPE</h4> |
| <pre>public static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a> RETURN_TYPE</pre> |
| <div class="block">Operand type-inference strategy where an unknown operand type is derived |
| from the call's return type. If the return type is a record, it must have |
| the same number of fields as the number of operands.</div> |
| </li> |
| </ul> |
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| <!-- --> |
| </a> |
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| <h4>BOOLEAN</h4> |
| <pre>public static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a> BOOLEAN</pre> |
| <div class="block">Operand type-inference strategy where an unknown operand type is assumed |
| to be boolean.</div> |
| </li> |
| </ul> |
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| <h4>VARCHAR_1024</h4> |
| <pre>public static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a> VARCHAR_1024</pre> |
| <div class="block">Operand type-inference strategy where an unknown operand type is assumed |
| to be VARCHAR(1024). This is not something which should be used in most |
| cases (especially since the precision is arbitrary), but for IS [NOT] |
| NULL, we don't really care about the type at all, so it's reasonable to |
| use something that every other type can be cast to.</div> |
| </li> |
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| <h4>ANY_NULLABLE</h4> |
| <pre>public static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a> ANY_NULLABLE</pre> |
| <div class="block">Operand type-inference strategy where an unknown operand type is assumed |
| to be nullable ANY.</div> |
| </li> |
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| <h4>InferTypes</h4> |
| <pre>private InferTypes()</pre> |
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| <h4>explicit</h4> |
| <pre class="methodSignature">public static <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a> explicit​(java.util.List<<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>> types)</pre> |
| <div class="block">Returns an <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type"><code>SqlOperandTypeInference</code></a> that returns a given list of |
| types.</div> |
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