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Add \if support to pgbench

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Patch adds \if to pgbench as it done for psql. Implementation shares condition
stack code with psql, so, this code is moved to fe_utils directory.

Author: Fabien COELHO with minor editorization by me
Review by: Vik Fearing, Fedor Sigaev
Discussion: https://www.postgresql.org/message-id/flat/alpine.DEB.2.20.1711252200190.28523@lancre
This commit is contained in:
Teodor Sigaev
2018-03-22 17:42:03 +03:00
parent b5db1d93d2
commit f67b113ac6
12 changed files with 471 additions and 86 deletions
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15
doc/src/sgml/ref/pgbench.sgml
View File

@ -900,6 +900,21 @@ pgbench <optional> <replaceable>options</replaceable> </optional> <replaceable>d
</para>
<variablelist>
<varlistentry>
<term><literal>\if</literal> <replaceable class="parameter">expression</replaceable></term>
<term><literal>\elif</literal> <replaceable class="parameter">expression</replaceable></term>
<term><literal>\else</literal></term>
<term><literal>\endif</literal></term>
<listitem>
<para>
This group of commands implements nestable conditional blocks,
similarly to <literal>psql</literal>'s <xref linkend="psql-metacommand-if"/>.
Conditional expressions are identical to those with <literal>\set</literal>,
with non-zero values interpreted as true.
</para>
</listitem>
</varlistentry>
<varlistentry id='pgbench-metacommand-set'>
<term>
<literal>\set <replaceable>varname</replaceable> <replaceable>expression</replaceable></literal>

2
doc/src/sgml/ref/psql-ref.sgml
View File

@ -2169,7 +2169,7 @@ hello 10
</varlistentry>
<varlistentry>
<varlistentry id="psql-metacommand-if">
<term><literal>\if</literal> <replaceable class="parameter">expression</replaceable></term>
<term><literal>\elif</literal> <replaceable class="parameter">expression</replaceable></term>
<term><literal>\else</literal></term>