以下内容出自cookbook
/*列出模式中的表*/ select table_name from information_schema.tables where table_schema = 'SMEAGOL' /*列出表的列*/ select column_name,data_type,ordinal_position from information_schema.columns where table_schema = 'SMEAGOL' and table_name = 'EMP' /*列出表的索引列*/ select a.name table_name, b.name index_name, d.name column_name, c.index_column_id from sys.tables a, sys.indexes b, sys.index_columns c, sys.columns d where a.object_id = b.object_id and b.object_id = c.object_id and b.index_id = c.index_id and c.object_id = d.object_id and c.column_id = d.column_id and a.name = 'EMP' /*列出表约束*/ select a.table_name, a.constraint_name, b.column_name, a.constraint_type from information_schema.table_constraints a, information_schema.key_column_usage b where a.table_name = 'EMP' and a.table_schema = 'SMEAGOL' and a.table_name = b.table_name and a.table_schema = b.table_schema and a.constraint_name = b.constraint_name /*列出没有相应索引的外键*/ select fkeys.table_name, fkeys.constraint_name, fkeys.column_name, ind_cols.index_name from ( select a.object_id, d.column_id, a.name table_name, b.name constraint_name, d.name column_name from sys.tables a join sys.foreign_keys b on ( a.name = 'EMP' and a.object_id = b.parent_object_id ) join sys.foreign_key_columns c on ( b.object_id = c.constraint_object_id ) join sys.columns d on ( c.constraint_column_id = d.column_id and a.object_id = d.object_id ) ) fkeys left join ( elect a.name index_name, b.object_id, b.column_id from sys.indexes a, sys.index_columns b where a.index_id = b.index_id ) ind_cols on ( fkeys.object_id = ind_cols.object_id and fkeys.column_id = ind_cols.column_id ) where ind_cols.index_name is null
