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Zero-label enums: 

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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4
doc/src/sgml/ref/create_type.sgml
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@ -1,5 +1,5 @@
<!-- <!--
$PostgreSQL: pgsql/doc/src/sgml/ref/create_type.sgml,v 1.79 2008/11/30 19:01:29 tgl Exp $ $PostgreSQL: pgsql/doc/src/sgml/ref/create_type.sgml,v 1.80 2009/12/26 16:55:21 momjian Exp $
PostgreSQL documentation PostgreSQL documentation
--> -->
@ -25,7 +25,7 @@ CREATE TYPE <replaceable class="parameter">name</replaceable> AS
( <replaceable class="PARAMETER">attribute_name</replaceable> <replaceable class="PARAMETER">data_type</replaceable> [, ... ] ) ( <replaceable class="PARAMETER">attribute_name</replaceable> <replaceable class="PARAMETER">data_type</replaceable> [, ... ] )
CREATE TYPE <replaceable class="parameter">name</replaceable> AS ENUM CREATE TYPE <replaceable class="parameter">name</replaceable> AS ENUM
( '<replaceable class="parameter">label</replaceable>' [, ... ] ) ( [ '<replaceable class="parameter">label</replaceable>' [, ... ] ] )
CREATE TYPE <replaceable class="parameter">name</replaceable> ( CREATE TYPE <replaceable class="parameter">name</replaceable> (
INPUT = <replaceable class="parameter">input_function</replaceable>, INPUT = <replaceable class="parameter">input_function</replaceable>,

11
src/backend/parser/gram.y
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@ -11,7 +11,7 @@
* *
* *
* IDENTIFICATION * 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 * HISTORY
* AUTHOR DATE MAJOR EVENT * AUTHOR DATE MAJOR EVENT
@ -297,7 +297,7 @@ static TypeName *TableFuncTypeName(List *columns);
TableFuncElementList opt_type_modifiers TableFuncElementList opt_type_modifiers
prep_type_clause prep_type_clause
execute_param_clause using_clause returning_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 create_generic_options alter_generic_options
relation_expr_list dostmt_opt_list relation_expr_list dostmt_opt_list
@ -3623,7 +3623,7 @@ DefineStmt:
n->coldeflist = $6; n->coldeflist = $6;
$$ = (Node *)n; $$ = (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); CreateEnumStmt *n = makeNode(CreateEnumStmt);
n->typeName = $3; 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 enum_val_list: Sconst
{ $$ = list_make1(makeString($1)); } { $$ = list_make1(makeString($1)); }
| enum_val_list ',' Sconst | enum_val_list ',' Sconst

8
src/bin/pg_dump/pg_dump.c
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@ -12,7 +12,7 @@
* by PostgreSQL * by PostgreSQL
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.561 2009/12/24 22:09:23 momjian Exp $ * $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.562 2009/12/26 16:55:21 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -6542,12 +6542,6 @@ dumpEnumType(Archive *fout, TypeInfo *tyinfo)
check_sql_result(res, g_conn, query->data, PGRES_TUPLES_OK); check_sql_result(res, g_conn, query->data, PGRES_TUPLES_OK);
num = PQntuples(res); num = PQntuples(res);
/* should be at least 1 value */
if (num == 0)
{
write_msg(NULL, "no label definitions found for enum ID %u\n", tyinfo->dobj.catId.oid);
exit_nicely();
}
/* /*
* DROP must be fully qualified in case same name appears in pg_catalog. * DROP must be fully qualified in case same name appears in pg_catalog.