Sqlserver数据字典

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