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Allow commas in BEGIN, START TRANSACTION, and SET TRANSACTION, as required

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by the SQL standard.  For backwards compatibility, however, continue to
accept the syntax without.  Minor editorialization in the reference pages
for these commands, too.
This commit is contained in:
Tom Lane
2004-08-12 21:00:34 +00:00
parent 9e01aaa8bf
commit 7f7e8cc3f2
5 changed files with 139 additions and 95 deletions
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54
src/backend/parser/gram.y
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@@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.470 2004/08/12 19:12:21 tgl Exp $
* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.471 2004/08/12 21:00:28 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -161,11 +161,11 @@ static void doNegateFloat(Value *v);
%type <dbehavior> opt_drop_behavior
%type <list> createdb_opt_list copy_opt_list
%type <defelt> createdb_opt_item copy_opt_item
%type <list> createdb_opt_list copy_opt_list transaction_mode_list
%type <defelt> createdb_opt_item copy_opt_item transaction_mode_item
%type <ival> opt_lock lock_type cast_context
%type <boolean> opt_force opt_or_replace transaction_access_mode
%type <boolean> opt_force opt_or_replace
opt_grant_grant_option opt_revoke_grant_option
opt_nowait
@@ -222,7 +222,7 @@ static void doNegateFloat(Value *v);
target_list update_target_list insert_column_list
insert_target_list def_list indirection opt_indirection
group_clause TriggerFuncArgs select_limit
opt_select_limit opclass_item_list transaction_mode_list
opt_select_limit opclass_item_list
transaction_mode_list_or_empty
TableFuncElementList
prep_type_clause prep_type_list
@@ -4021,27 +4021,26 @@ opt_transaction: WORK {}
| /*EMPTY*/ {}
;
transaction_mode_list:
transaction_mode_item:
ISOLATION LEVEL iso_level
{ $$ = list_make1(makeDefElem("transaction_isolation",
makeStringConst($3, NULL))); }
| transaction_access_mode
{ $$ = list_make1(makeDefElem("transaction_read_only",
makeIntConst($1))); }
| ISOLATION LEVEL iso_level transaction_access_mode
{
$$ = list_make2(makeDefElem("transaction_isolation",
makeStringConst($3, NULL)),
makeDefElem("transaction_read_only",
makeIntConst($4)));
}
| transaction_access_mode ISOLATION LEVEL iso_level
{
$$ = list_make2(makeDefElem("transaction_read_only",
makeIntConst($1)),
makeDefElem("transaction_isolation",
makeStringConst($4, NULL)));
}
{ $$ = makeDefElem("transaction_isolation",
makeStringConst($3, NULL)); }
| READ ONLY
{ $$ = makeDefElem("transaction_read_only",
makeIntConst(TRUE)); }
| READ WRITE
{ $$ = makeDefElem("transaction_read_only",
makeIntConst(FALSE)); }
;
/* Syntax with commas is SQL-spec, without commas is Postgres historical */
transaction_mode_list:
transaction_mode_item
{ $$ = list_make1($1); }
| transaction_mode_list ',' transaction_mode_item
{ $$ = lappend($1, $3); }
| transaction_mode_list transaction_mode_item
{ $$ = lappend($1, $2); }
;
transaction_mode_list_or_empty:
@@ -4050,11 +4049,6 @@ transaction_mode_list_or_empty:
{ $$ = NIL; }
;
transaction_access_mode:
READ ONLY { $$ = TRUE; }
| READ WRITE { $$ = FALSE; }
;
/*****************************************************************************
*