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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 13:44:03 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 13:44:03 +0000 |
| commit | 293913568e6a7a86fd1479e1cff8e2ecb58d6568 (patch) | |
| tree | fc3b469a3ec5ab71b36ea97cc7aaddb838423a0c /doc/src/sgml/html/pltcl-transactions.html | |
| parent | Initial commit. (diff) | |
| download | postgresql-16-293913568e6a7a86fd1479e1cff8e2ecb58d6568.tar.xz postgresql-16-293913568e6a7a86fd1479e1cff8e2ecb58d6568.zip | |
Adding upstream version 16.2.upstream/16.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'doc/src/sgml/html/pltcl-transactions.html')
| -rw-r--r-- | doc/src/sgml/html/pltcl-transactions.html | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/doc/src/sgml/html/pltcl-transactions.html b/doc/src/sgml/html/pltcl-transactions.html new file mode 100644 index 0000000..416d758 --- /dev/null +++ b/doc/src/sgml/html/pltcl-transactions.html @@ -0,0 +1,33 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>44.10. Transaction Management</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="pltcl-subtransactions.html" title="44.9. Explicit Subtransactions in PL/Tcl" /><link rel="next" href="pltcl-config.html" title="44.11. PL/Tcl Configuration" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">44.10. Transaction Management</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="pltcl-subtransactions.html" title="44.9. Explicit Subtransactions in PL/Tcl">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="pltcl.html" title="Chapter 44. PL/Tcl — Tcl Procedural Language">Up</a></td><th width="60%" align="center">Chapter 44. PL/Tcl — Tcl Procedural Language</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 16.2 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="pltcl-config.html" title="44.11. PL/Tcl Configuration">Next</a></td></tr></table><hr /></div><div class="sect1" id="PLTCL-TRANSACTIONS"><div class="titlepage"><div><div><h2 class="title" style="clear: both">44.10. Transaction Management <a href="#PLTCL-TRANSACTIONS" class="id_link">#</a></h2></div></div></div><p> + In a procedure called from the top level or an anonymous code block + (<code class="command">DO</code> command) called from the top level it is possible + to control transactions. To commit the current transaction, call the + <code class="literal">commit</code> command. To roll back the current transaction, + call the <code class="literal">rollback</code> command. (Note that it is not + possible to run the SQL commands <code class="command">COMMIT</code> or + <code class="command">ROLLBACK</code> via <code class="function">spi_exec</code> or similar. + It has to be done using these functions.) After a transaction is ended, + a new transaction is automatically started, so there is no separate + command for that. + </p><p> + Here is an example: +</p><pre class="programlisting"> +CREATE PROCEDURE transaction_test1() +LANGUAGE pltcl +AS $$ +for {set i 0} {$i < 10} {incr i} { + spi_exec "INSERT INTO test1 (a) VALUES ($i)" + if {$i % 2 == 0} { + commit + } else { + rollback + } +} +$$; + +CALL transaction_test1(); +</pre><p> + </p><p> + Transactions cannot be ended when an explicit subtransaction is active. + </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="pltcl-subtransactions.html" title="44.9. Explicit Subtransactions in PL/Tcl">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="pltcl.html" title="Chapter 44. PL/Tcl — Tcl Procedural Language">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="pltcl-config.html" title="44.11. PL/Tcl Configuration">Next</a></td></tr><tr><td width="40%" align="left" valign="top">44.9. Explicit Subtransactions in PL/Tcl </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 16.2 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 44.11. PL/Tcl Configuration</td></tr></table></div></body></html>
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