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Zero-label enums:

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Allow enums to be created with zero labels, for use during binary upgrade.
This commit is contained in:
Bruce Momjian
2009-12-26 16:55:21 +00:00
parent f9845aca2b
commit 1fd9883ff4
3 changed files with 11 additions and 12 deletions
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11
src/backend/parser/gram.y
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@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.699 2009/12/23 17:41:43 tgl Exp $
* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.700 2009/12/26 16:55:21 momjian Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -297,7 +297,7 @@ static TypeName *TableFuncTypeName(List *columns);
TableFuncElementList opt_type_modifiers
prep_type_clause
execute_param_clause using_clause returning_clause
enum_val_list table_func_column_list
opt_enum_val_list enum_val_list table_func_column_list
create_generic_options alter_generic_options
relation_expr_list dostmt_opt_list
@ -3623,7 +3623,7 @@ DefineStmt:
n->coldeflist = $6;
$$ = (Node *)n;
}
| CREATE TYPE_P any_name AS ENUM_P '(' enum_val_list ')'
| CREATE TYPE_P any_name AS ENUM_P '(' opt_enum_val_list ')'
{
CreateEnumStmt *n = makeNode(CreateEnumStmt);
n->typeName = $3;
@ -3715,6 +3715,11 @@ old_aggr_elem: IDENT '=' def_arg
}
;
opt_enum_val_list:
enum_val_list { $$ = $1; }
| /*EMPTY*/ { $$ = NIL; }
;
enum_val_list: Sconst
{ $$ = list_make1(makeString($1)); }
| enum_val_list ',' Sconst