OSSForks/postgres
1
0
Fork 0
mirror of https://github.com/zebrajr/postgres.git synced 2025-12-07 12:20:31 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Back-patch fix for errors reported at transaction end.

Browse Source
This commit is contained in:
Tom Lane 2002-02-27 23:17:01 +00:00
parent 567f9d054f
commit b233e5903a
1 changed files with 31 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
src/backend/tcop/postgres.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.245.2.1 2002/02/26 23:48:45 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.245.2.2 2002/02/27 23:17:01 tgl Exp $
*
* NOTES
* this is the "main" module of the postgres backend and
@ -645,6 +645,15 @@ pg_exec_query_string(char *query_string, /* string to execute */
/* Transaction control statements need some special handling */
isTransactionStmt = IsA(parsetree, TransactionStmt);
/*
* First we set the command-completion tag to the main query
* (as opposed to each of the others that may be generated by
* analyze and rewrite). Also set ps_status to the main query tag.
*/
commandTag = CreateCommandTag(parsetree);
set_ps_display(commandTag);
/*
* If we are in an aborted transaction, ignore all commands except
* COMMIT/ABORT. It is important that this test occur before we
@ -707,18 +716,7 @@ pg_exec_query_string(char *query_string, /* string to execute */
/*
* OK to analyze and rewrite this query.
*/
/*
* First we set the command-completion tag to the main query
* (as opposed to each of the others that may be generated by
* analyze and rewrite). Also set ps_status to the main query tag.
*/
commandTag = CreateCommandTag(parsetree);
set_ps_display(commandTag);
/*
*
* Switch to appropriate context for constructing querytrees (again,
* these must outlive the execution context).
*/
@ -858,6 +856,22 @@ pg_exec_query_string(char *query_string, /* string to execute */
} /* end loop over queries generated from a
* parsetree */
/*
* If this is the last parsetree of the query string, close down
* transaction statement before reporting command-complete. This is
* so that any end-of-transaction errors are reported before the
* command-complete message is issued, to avoid confusing clients
* who will expect either a command-complete message or an error,
* not one and then the other. But for compatibility with
* historical Postgres behavior, we do not force a transaction
* boundary between queries appearing in a single query string.
*/
if (lnext(parsetree_item) == NIL && xact_started)
{
finish_xact_command();
xact_started = false;
}
/*
* It is possible that the original query was removed due to
* a DO INSTEAD rewrite rule. In that case we will still have
@ -877,13 +891,15 @@ pg_exec_query_string(char *query_string, /* string to execute */
* Tell client that we're done with this query. Note we emit
* exactly one EndCommand report for each raw parsetree, thus
* one for each SQL command the client sent, regardless of
* rewriting.
* rewriting. (But a command aborted by error will not send
* an EndCommand report at all.)
*/
EndCommand(commandTag, dest);
} /* end loop over parsetrees */
/*
* Close down transaction statement, if one is open.
* (Note that this will only happen if the querystring was empty.)
*/
if (xact_started)
finish_xact_command();
@ -1688,7 +1704,7 @@ PostgresMain(int argc, char *argv[], const char *username)
if (!IsUnderPostmaster)
{
puts("\nPOSTGRES backend interactive interface ");
puts("$Revision: 1.245.2.1 $ $Date: 2002/02/26 23:48:45 $\n");
puts("$Revision: 1.245.2.2 $ $Date: 2002/02/27 23:17:01 $\n");
}
/*