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PostgreSQL documentation
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<refentry id="SQL-START-TRANSACTION">
 <refmeta>
  <refentrytitle id="SQL-START-TRANSACTION-TITLE">START TRANSACTION</refentrytitle>
  <refmiscinfo>SQL - Language Statements</refmiscinfo>
 </refmeta>

 <refnamediv>
  <refname>START TRANSACTION</refname>
  <refpurpose>start a transaction block</refpurpose>
 </refnamediv>

 <indexterm zone="sql-start-transaction">
  <primary>START TRANSACTION</primary>
 </indexterm>

 <refsynopsisdiv>
<synopsis>
START TRANSACTION
    [ ISOLATION LEVEL { READ UNCOMMITTED | READ COMMITTED | REPEATABLE READ | SERIALIZABLE } ]
    [ READ WRITE | READ ONLY ]
</synopsis>
 </refsynopsisdiv>

 <refsect1>
  <title>Description</title>

  <para>
   This command begins a new transaction. If the isolation level or
   read/write mode is specified, the new transaction has those
   characteristics, as if <xref linkend="sql-set-transaction"
   endterm="sql-set-transaction-title"> was executed. It is the same
   as the <xref linkend="sql-begin" endterm="sql-begin-title"> command.
  </para>
 </refsect1>

 <refsect1>
  <title>Parameters</title>

  <para>
   Refer to <xref linkend="sql-set-transaction"
   endterm="sql-set-transaction-title"> for information on the meaning
   of the parameters to this statement.
  </para>
 </refsect1>

 <refsect1>
  <title>Compatibility</title>

  <para>
   This command conforms to the SQL standard; but see also the
   compatibility section of <xref linkend="sql-set-transaction"
   endterm="sql-set-transaction-title">.
  </para>
 </refsect1>

 <refsect1>
  <title>See Also</title>

  <simplelist type="inline">
   <member><xref linkend="sql-begin" endterm="sql-begin-title"></member>
   <member><xref linkend="sql-commit" endterm="sql-commit-title"></member>
   <member><xref linkend="sql-rollback" endterm="sql-rollback-title"></member>
   <member><xref linkend="sql-set-transaction" endterm="sql-set-transaction-title"></member>
  </simplelist>
 </refsect1>
</refentry>

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