select?sys.columns.name,?sys.types.name,?sys.columns.precision,sys.columns.scale,?sys.columns.is_nullable,??
??(select?count(*)?from?sys.identity_columns?where?sys.identity_columns.object_id?=?sys.columns.object_id?and?sys.columns.column_id?=?sys.identity_columns.column_id)?as?is_identity?,
??(select?value?from?sys.extended_properties?where?sys.extended_properties.major_id?=?sys.columns.object_id?and?sys.extended_properties.minor_id?=?sys.columns.column_id)?as?description,
(?SELECT?count(*)?FROM?sysobjects??
WHERE?(name?in?(SELECT?name?FROM?sysindexes??
WHERE?(id?=?a.id)?AND?(indid?in??
(SELECT?indid?FROM?sysindexkeys??
WHERE?(id?=?a.id)?AND?(colid?in??
(SELECT?colid?FROM?syscolumns?WHERE?(id?=?a.id)?AND?(name?=?a.name)))))))??
AND?(xtype?=?'PK')?)?as?is_key?
??from?sys.columns,?sys.tables,?sys.types?,
???syscolumns?a?
??where?
??sys.columns.object_id?=?sys.tables.object_id?and?
??sys.columns.system_type_id=sys.types.system_type_id?and?
??a.id?=?sys.tables.object_id??and?a.id?=?sys.columns.object_id?and?a.name?=?sys.columns.name?and?
??sys.tables.name='yk_typk'?
??order?by?sys.columns.column_id

YPCD	numeric	4	0	0	0	NULL	1
CDMC	varchar	0	0	1	0	NULL	0
PYDM	varchar	0	0	1	0	NULL	0
CDQC	varchar	0	0	1	0	NULL	0