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| <h1 class="title topictitle1" id="ariaid-title1">INT Data Type</h1> |
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| <p class="p"> |
| A 4-byte integer data type used in <code class="ph codeph">CREATE TABLE</code> and <code class="ph codeph">ALTER TABLE</code> statements. |
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| <p class="p"> |
| <strong class="ph b">Syntax:</strong> |
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| <p class="p"> |
| In the column definition of a <code class="ph codeph">CREATE TABLE</code> statement: |
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| <pre class="pre codeblock"><code><var class="keyword varname">column_name</var> INT</code></pre> |
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| <p class="p"> |
| <strong class="ph b">Range:</strong> -2147483648 .. 2147483647. There is no <code class="ph codeph">UNSIGNED</code> subtype. |
| </p> |
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| <p class="p"> |
| <strong class="ph b">Conversions:</strong> Impala automatically converts to a larger integer type (<code class="ph codeph">BIGINT</code>) or a |
| floating-point type (<code class="ph codeph">FLOAT</code> or <code class="ph codeph">DOUBLE</code>) automatically. Use |
| <code class="ph codeph">CAST()</code> to convert to <code class="ph codeph">TINYINT</code>, <code class="ph codeph">SMALLINT</code>, |
| <code class="ph codeph">STRING</code>, or <code class="ph codeph">TIMESTAMP</code>. |
| <span class="ph"> Casting an integer or floating-point value |
| <code class="ph codeph">N</code> to <code class="ph codeph">TIMESTAMP</code> produces a value that is |
| <code class="ph codeph">N</code> seconds past the start of the epoch date (January 1, 1970). By |
| default, the result value represents a date and time in the UTC time zone. If the |
| setting <code class="ph codeph">‑‑use_local_tz_for_unix_timestamp_conversions=true</code> |
| is in effect, the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the |
| local time zone. </span> |
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| <strong class="ph b">Usage notes:</strong> |
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| <p class="p"> |
| The data type <code class="ph codeph">INTEGER</code> is an alias for <code class="ph codeph">INT</code>. |
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| <p class="p"> |
| For a convenient and automated way to check the bounds of the <code class="ph codeph">INT</code> type, call the functions |
| <code class="ph codeph">MIN_INT()</code> and <code class="ph codeph">MAX_INT()</code>. |
| </p> |
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| <p class="p"> |
| If an integer value is too large to be represented as a <code class="ph codeph">INT</code>, use a <code class="ph codeph">BIGINT</code> |
| instead. |
| </p> |
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| <p class="p"> |
| <strong class="ph b">NULL considerations:</strong> Casting any non-numeric value to this type produces a |
| <code class="ph codeph">NULL</code> value. |
| </p> |
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| <p class="p"> |
| <strong class="ph b">Examples:</strong> |
| </p> |
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| <pre class="pre codeblock"><code>CREATE TABLE t1 (x INT); |
| SELECT CAST(1000 AS INT); |
| </code></pre> |
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| <p class="p"> |
| <strong class="ph b">Partitioning:</strong> Prefer to use this type for a partition key column. Impala can |
| process the numeric type more efficiently than a <code class="ph codeph">STRING</code> representation |
| of the value. |
| </p> |
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| <p class="p"> |
| <strong class="ph b">HBase considerations:</strong> This data type is fully compatible with HBase tables. |
| </p> |
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| <p class="p"> |
| <strong class="ph b">Parquet considerations:</strong> |
| </p> |
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| <strong class="ph b">Text table considerations:</strong> Values of this type are potentially larger in text |
| tables than in tables using Parquet or other binary formats. |
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| <strong class="ph b">Internal details:</strong> Represented in memory as a 4-byte value. |
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| <strong class="ph b">Added in:</strong> Available in all versions of Impala. |
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| <strong class="ph b">Column statistics considerations:</strong> Because this type has a fixed size, the maximum |
| and average size fields are always filled in for column statistics, even before you run |
| the <code class="ph codeph">COMPUTE STATS</code> statement. |
| </p> |
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| <p class="p"> |
| <strong class="ph b">Related information:</strong> |
| </p> |
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| <p class="p"> |
| <a class="xref" href="impala_literals.html#numeric_literals">Numeric Literals</a>, <a class="xref" href="impala_tinyint.html#tinyint">TINYINT Data Type</a>, |
| <a class="xref" href="impala_smallint.html#smallint">SMALLINT Data Type</a>, <a class="xref" href="impala_int.html#int">INT Data Type</a>, |
| <a class="xref" href="impala_bigint.html#bigint">BIGINT Data Type</a>, <a class="xref" href="impala_decimal.html#decimal">DECIMAL Data Type (Impala 3.0 or higher only)</a>, |
| <a class="xref" href="impala_math_functions.html#math_functions">Impala Mathematical Functions</a> |
| </p> |
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| </div> |
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| <div class="related-links"> |
| <div class="familylinks"> |
| <div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_datatypes.html">Data Types</a></div> |
| </div> |
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