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diff --git a/doc/src/sgml/html/sql-start-transaction.html b/doc/src/sgml/html/sql-start-transaction.html new file mode 100644 index 0000000..955abfe --- /dev/null +++ b/doc/src/sgml/html/sql-start-transaction.html @@ -0,0 +1,37 @@ +<?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>START TRANSACTION</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="sql-show.html" title="SHOW" /><link rel="next" href="sql-truncate.html" title="TRUNCATE" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">START TRANSACTION</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-show.html" title="SHOW">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><th width="60%" align="center">SQL Commands</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="sql-truncate.html" title="TRUNCATE">Next</a></td></tr></table><hr /></div><div class="refentry" id="SQL-START-TRANSACTION"><div class="titlepage"></div><a id="id-1.9.3.180.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">START TRANSACTION</span></h2><p>START TRANSACTION — start a transaction block</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis"> +START TRANSACTION [ <em class="replaceable"><code>transaction_mode</code></em> [, ...] ] + +<span class="phrase">where <em class="replaceable"><code>transaction_mode</code></em> is one of:</span> + + ISOLATION LEVEL { SERIALIZABLE | REPEATABLE READ | READ COMMITTED | READ UNCOMMITTED } + READ WRITE | READ ONLY + [ NOT ] DEFERRABLE +</pre></div><div class="refsect1" id="id-1.9.3.180.5"><h2>Description</h2><p> + This command begins a new transaction block. If the isolation level, + read/write mode, or deferrable mode is specified, the new transaction has those + characteristics, as if <a class="link" href="sql-set-transaction.html" title="SET TRANSACTION"><code class="command">SET TRANSACTION</code></a> was executed. This is the same + as the <a class="link" href="sql-begin.html" title="BEGIN"><code class="command">BEGIN</code></a> command. + </p></div><div class="refsect1" id="id-1.9.3.180.6"><h2>Parameters</h2><p> + Refer to <a class="xref" href="sql-set-transaction.html" title="SET TRANSACTION"><span class="refentrytitle">SET TRANSACTION</span></a> for information on the meaning + of the parameters to this statement. + </p></div><div class="refsect1" id="id-1.9.3.180.7"><h2>Compatibility</h2><p> + In the standard, it is not necessary to issue <code class="command">START TRANSACTION</code> + to start a transaction block: any SQL command implicitly begins a block. + <span class="productname">PostgreSQL</span>'s behavior can be seen as implicitly + issuing a <code class="command">COMMIT</code> after each command that does not + follow <code class="command">START TRANSACTION</code> (or <code class="command">BEGIN</code>), + and it is therefore often called <span class="quote">“<span class="quote">autocommit</span>”</span>. + Other relational database systems might offer an autocommit feature + as a convenience. + </p><p> + The <code class="literal">DEFERRABLE</code> + <em class="replaceable"><code>transaction_mode</code></em> + is a <span class="productname">PostgreSQL</span> language extension. + </p><p> + The SQL standard requires commas between successive <em class="replaceable"><code>transaction_modes</code></em>, but for historical + reasons <span class="productname">PostgreSQL</span> allows the commas to be + omitted. + </p><p> + See also the compatibility section of <a class="xref" href="sql-set-transaction.html" title="SET TRANSACTION"><span class="refentrytitle">SET TRANSACTION</span></a>. + </p></div><div class="refsect1" id="id-1.9.3.180.8"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-begin.html" title="BEGIN"><span class="refentrytitle">BEGIN</span></a>, <a class="xref" href="sql-commit.html" title="COMMIT"><span class="refentrytitle">COMMIT</span></a>, <a class="xref" href="sql-rollback.html" title="ROLLBACK"><span class="refentrytitle">ROLLBACK</span></a>, <a class="xref" href="sql-savepoint.html" title="SAVEPOINT"><span class="refentrytitle">SAVEPOINT</span></a>, <a class="xref" href="sql-set-transaction.html" title="SET TRANSACTION"><span class="refentrytitle">SET TRANSACTION</span></a></span></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sql-show.html" title="SHOW">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sql-truncate.html" title="TRUNCATE">Next</a></td></tr><tr><td width="40%" align="left" valign="top">SHOW </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.5 Documentation">Home</a></td><td width="40%" align="right" valign="top"> TRUNCATE</td></tr></table></div></body></html>
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