docs/topics/impala_tinyint.xml

<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept id="tinyint">

  <title>TINYINT Data Type</title>
  <titlealts audience="PDF"><navtitle>TINYINT</navtitle></titlealts>
  <prolog>
    <metadata>
      <data name="Category" value="Impala"/>
      <data name="Category" value="Impala Data Types"/>
      <data name="Category" value="SQL"/>
      <data name="Category" value="Data Analysts"/>
      <data name="Category" value="Developers"/>
      <data name="Category" value="Schemas"/>
    </metadata>
  </prolog>

  <conbody>

    <p>
      A 1-byte integer data type used in <codeph>CREATE TABLE</codeph> and <codeph>ALTER TABLE</codeph> statements.
    </p>

    <p conref="../shared/impala_common.xml#common/syntax_blurb"/>

    <p>
      In the column definition of a <codeph>CREATE TABLE</codeph> statement:
    </p>

<codeblock><varname>column_name</varname> TINYINT</codeblock>

    <p>
      <b>Range:</b> -128 .. 127. There is no <codeph>UNSIGNED</codeph> subtype.
    </p>

    <p>
      <b>Conversions:</b> Impala automatically converts to a larger integer type (<codeph>SMALLINT</codeph>,
      <codeph>INT</codeph>, or <codeph>BIGINT</codeph>) or a floating-point type (<codeph>FLOAT</codeph> or
      <codeph>DOUBLE</codeph>) automatically. Use <codeph>CAST()</codeph> to convert to <codeph>STRING</codeph> or
      <codeph>TIMESTAMP</codeph>.
      <ph conref="../shared/impala_common.xml#common/cast_int_to_timestamp"/>
    </p>

    <p conref="../shared/impala_common.xml#common/int_overflow_behavior"/>

    <p conref="../shared/impala_common.xml#common/usage_notes_blurb"/>

    <p>
      For a convenient and automated way to check the bounds of the <codeph>TINYINT</codeph> type, call the
      functions <codeph>MIN_TINYINT()</codeph> and <codeph>MAX_TINYINT()</codeph>.
    </p>

    <p>
      If an integer value is too large to be represented as a <codeph>TINYINT</codeph>, use a
      <codeph>SMALLINT</codeph> instead.
    </p>

    <p conref="../shared/impala_common.xml#common/null_bad_numeric_cast"/>

    <p conref="../shared/impala_common.xml#common/example_blurb"/>

<codeblock>CREATE TABLE t1 (x TINYINT);
SELECT CAST(100 AS TINYINT);
</codeblock>

    <p conref="../shared/impala_common.xml#common/parquet_blurb"/>

<!-- Duplicated under TINYINT and SMALLINT. Turn into a conref in both places. -->

    <p rev="1.4.0">
      Physically, Parquet files represent <codeph>TINYINT</codeph> and <codeph>SMALLINT</codeph> values as 32-bit
      integers. Although Impala rejects attempts to insert out-of-range values into such columns, if you create a
      new table with the <codeph>CREATE TABLE ... LIKE PARQUET</codeph> syntax, any <codeph>TINYINT</codeph> or
      <codeph>SMALLINT</codeph> columns in the original table turn into <codeph>INT</codeph> columns in the new
      table.
    </p>

<!-- <p conref="../shared/impala_common.xml#common/partitioning_blurb"/> -->

    <p conref="../shared/impala_common.xml#common/hbase_ok"/>

    <p conref="../shared/impala_common.xml#common/text_bulky"/>

<!-- <p conref="../shared/impala_common.xml#common/compatibility_blurb"/> -->

    <p conref="../shared/impala_common.xml#common/internals_1_bytes"/>

    <p conref="../shared/impala_common.xml#common/added_forever"/>

    <p conref="../shared/impala_common.xml#common/column_stats_constant"/>

<!-- <p conref="../shared/impala_common.xml#common/restrictions_blurb"/> -->

    <p conref="../shared/impala_common.xml#common/related_info"/>

    <p>
      <xref href="impala_literals.xml#numeric_literals"/>, <xref href="impala_tinyint.xml#tinyint"/>,
      <xref href="impala_smallint.xml#smallint"/>, <xref href="impala_int.xml#int"/>,
      <xref href="impala_bigint.xml#bigint"/>, <xref href="impala_decimal.xml#decimal"/>,
      <xref href="impala_math_functions.xml#math_functions"/>
    </p>
  </conbody>
</concept>