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The attached patch implements START TRANSACTION, per SQL99. The

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functionality of the command is basically identical to that of
BEGIN; it just accepts a few extra options (only one of which
PostgreSQL currently implements), and is standards-compliant.
The patch includes a simple regression test and documentation.

[ Regression tests removed, per Peter.]

Neil Conway
This commit is contained in:
Bruce Momjian
2002-08-04 04:31:44 +00:00
parent fecc04f95a
commit 19e0e35bcd
10 changed files with 74 additions and 49 deletions
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24
src/backend/tcop/utility.c
View File

@@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.167 2002/07/30 16:55:45 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.168 2002/08/04 04:31:44 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -205,6 +205,28 @@ ProcessUtility(Node *parsetree,
BeginTransactionBlock();
break;
/*
* START TRANSACTION, as defined by SQL99: Identical to BEGIN,
* except that it takes a few additional options.
*/
case START:
{
BeginTransactionBlock();
/*
* Currently, the only option that can be set is
* the transaction isolation level by START
* TRANSACTION.
*/
if (stmt->options)
{
SetPGVariable("TRANSACTION ISOLATION LEVEL",
stmt->options,
false);
}
}
break;
case COMMIT:
EndTransactionBlock();
break;