reference/pgsql/functions/pg-field-is-null.xml
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&reftitle.description;
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<methodsynopsis>
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<type>int</type><methodname>pg_field_is_null</methodname>
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<methodparam><type>resource</type><parameter>result</parameter></methodparam>
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<methodparam><type>int</type><parameter>row</parameter></methodparam>
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<methodparam><type>PgSql\Result</type><parameter>result</parameter></methodparam>
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<methodparam><type class="union"><type>string</type><type>false</type><type>null</type></type><parameter>row</parameter></methodparam>
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<methodparam><type>mixed</type><parameter>field</parameter></methodparam>
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</methodsynopsis>
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<methodsynopsis>
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<type>int</type><methodname>pg_field_is_null</methodname>
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<methodparam><type>resource</type><parameter>result</parameter></methodparam>
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<methodparam><type>PgSql\Result</type><parameter>result</parameter></methodparam>
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<methodparam><type>mixed</type><parameter>field</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>pg_field_is_null</function> tests if a field in a PostgreSQL
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result resource is SQL <literal>NULL</literal> or not.
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<function>pg_field_is_null</function> tests if a field in an <classname>PgSql\Result</classname> instance
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is SQL <literal>NULL</literal> or not.
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</para>
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<note>
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<para>
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<varlistentry>
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<term><parameter>result</parameter></term>
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<listitem>
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<para>
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PostgreSQL query result resource, returned by <function>pg_query</function>,
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<function>pg_query_params</function> or <function>pg_execute</function>
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(among others).
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</para>
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&pgsql.parameter.result;
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>field</parameter></term>
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<listitem>
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<para>
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Field number (starting from 0) as an <type>integer</type> or
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Field number (starting from 0) as an <type>int</type> or
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the field name as a <type>string</type>.
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</para>
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</listitem>
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</para>
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>8.3.0</entry>
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<entry>
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<parameter>row</parameter> is now nullable.
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</entry>
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</row>
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&pgsql.changelog.result-object;
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</tbody>
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</tgroup>
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</informaltable>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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