系统视图，系统表，系统存储过程的使用 获取数据库中用户表信息 1、获取特定库中所有用户表信息 select from sys.tables select*from sys.objects where type='U'-用户表 第二条语句中当type='S'时是系统表 2、获取表的字段信息 select from sys.columns where object_id=object_id(')select from syscolumns where id=OBJECT_.ID('表名') 3、获取当前库中表的字段及类型信息 (1)select'字段名'=a.name, 类型名'=b.name, 字段长度'=a.max_length, 参数顺序'=a.column id from sys.columns a left join sys.types b on a.user_type_id=b.user_type_id where object_.id=object_id表名') syscolumns与sys.columns表用法类似。 获取索引或主键信息 1、获取对象及对应的索引的信息 select’对象名'=A.name ’对象类型'=a.type '索引名'=B.name, 索引类型'=case b.type when 1 then'聚集索引
系统视图，系统表，系统存储过程的使用 获取数据库中用户表信息 1、获取特定库中所有用户表信息 select * from sys.tables select * from sys.objects where type='U' --用户表 第二条语句中当 type='S'时是系统表 2、获取表的字段信息 select * from sys.columns where object_id=object_id('表名') select * from syscolumns where id=OBJECT_ID('表名' ) 3、获取当前库中表的字段及类型信息 （1）select '字段名'=a.name, '类型名'=b.name, '字段长度'=a.max_length, '参数顺序'=a.column_id from sys.columns a left join sys.types b on a.user_type_id=b.user_type_id where object_id=object_id('表名') syscolumns 与 sys.columns 表用法类似。 获取索引或主键信息 1、 获取对象及对应的索引的信息 select '对象名'=A.name, '对象类型'=a.type, '索引名'=B.name, '索引类型'=case b.type when 1 then '聚集索引
when2then'非聚集索引 when3then'xml索引 else'空间索引'end, '主键否'=case when b.is_primary_key=1 then'主键'elseend FROM sys.ob jects A JOIN sys.indexes B ON A.object_id=B.object_idWHERE A.type='U'AND B.name IS NOT NULL order by a.name 2、获取表的主键及对应的字段 (1)select’表名'=d.name,'主键名'=a.name,'字段名'=c.name from sys.indexes a join sys.index_columns b on a.object_id=b.object_id and a.index_id=b.index_id join sys.columns c on a.object id=c.ob ject id and c.column_id=b.column_id join sys.objects d on d.object_id=c.object_id where a.is primary key=1 (2)SELECT'表名'=OBJECT_NAME(b.parent_obj)), ’主键名'=c.name, '字段名'=a.name FROM syscolumns a,sysobjects b,sysindexes c,sysindexkeys d WHERE b.xtype ='PK'AND b.parent_obj a.id AND c.id a.id AND b.name c.name AND d.id a.id AND d.indid =c.indid AND a.colid d.colid (3)select'所属架构'=s.name, '表名'=t.name, '主键名'=k.name, '列名'=c.name, 键列序数'=ic.key_ordinal
when 2 then '非聚集索引' when 3 then 'xml 索引' else '空间索引' end, '主键否'=case when b.is_primary_key=1 then '主键' else '' end FROM sys.objects A JOIN sys.indexes B ON A.object_id=B.object_idWHERE A.type='U' AND B.name IS NOT NULL order by a.name 2、 获取表的主键及对应的字段 （1）select '表名'=d.name ,'主键名'=a.name,'字段名'=c.name from sys.indexes a join sys.index_columns b on a.object_id=b.object_id and a.index_id=b.index_id join sys.columns c on a.object_id=c.object_id and c.column_id=b.column_id join sys.objects d on d.object_id=c.object_id where a.is_primary_key=1 （2）SELECT '表名'=OBJECT_NAME(b.parent_obj), '主键名'=c.name, '字段名'=a.name FROM syscolumns a,sysobjects b,sysindexes c,sysindexkeys d WHERE b.xtype = 'PK' AND b.parent_obj = a.id AND c.id = a.id AND b.name = c.name AND d.id = a.id AND d.indid = c.indid AND a.colid = d.colid （3）select '所属架构'=s.name , '表名'=t.name, '主键名'=k.name , '列名'=c.name, '键列序数'=ic.key_ordinal
from sys.key constraints as k join sys.tables as t on t.object_id =k.parent_object_id join sys.schemas as s on s.schema_id =t.schema_id join sys.index_columns as ic on ic.object id t.object id and ic.index_id =k.unique_index_id join sys.columns as c on c.object_id =t.object_id and c.column_id ic.column_id where k.type ='pk'; (4)使用系统存储过程获取指定表的主键信息 EXEC sp_pkeys'表名'-一表名只能是当前数据库下的单独表名不能带上架构名 3、查询哪些表创建了主键 select'表名'=a.name from (select name,object_id from sys.objects where type='u')a left join sys.indexes b on a.object_id=b.object_id and b.is_primary_key=1 where b.name is not null 注：查询哪些表没有创建主键，将where条件改成is null即可。 查找视图信息 1、查看视图属性信息 exec sp_help'视图名 2、查看创建视图脚本
from sys.key_constraints as k join sys.tables as t on t.object_id = k.parent_object_id join sys.schemas as s on s.schema_id = t.schema_id join sys.index_columns as ic on ic.object_id = t.object_id and ic.index_id = k.unique_index_id join sys.columns as c on c.object_id = t.object_id and c.column_id = ic.column_id where k.type = 'pk'; （4）使用系统存储过程获取指定表的主键信息 EXEC sp_pkeys '表名' --表名只能是当前数据库下的单独表名不能带上架构名 3、 查询哪些表创建了主键 select '表名'=a.name from (select name,object_id from sys.objects where type='u') a left join sys.indexes b on a.object_id=b.object_id and b.is_primary_key=1 where b.name is not null 注：查询哪些表没有创建主键，将 where 条件改成 is null 即可。 查找视图信息 1、 查看视图属性信息 exec sp_help '视图名' 2、 查看创建视图脚本
exec sp_helptext'视图名' 3、查看当前数据库所有视图基本信息 select from sys.views select from sys.objects where type='V' select from INFORMATION_SCHEMA.VIEWS 4、查看视图对应的字段及字段属性 select'视图名'=a.name, '列名'=b.name, '字段类型'=TYPE_NAME(b.system_type_.id), ’字段长度'=b.max_length from sys.views a join sys.columns b on a.object_id=b.object_id order by a.name 5、获取视图中的对象信息 exec sp_.depends'视图名' 查看存储过程信息 1、基本信息 select from sys.procedures select from sys.objects where type='p' 2、查看存储过程创建文本 sp_helptext存储过程名称 select text from syscomments where id=object_id(存储过程名称) 3、查看存储过程的参数信息 (l)select’参数名称'=name, 类型'=type_name(xusertype)
exec sp_helptext '视图名' 3、 查看当前数据库所有视图基本信息 select * from sys.views select * from sys.objects where type='V' select * from INFORMATION_SCHEMA.VIEWS 4、 查看视图对应的字段及字段属性 select '视图名'=a.name, '列名'=b.name, '字段类型'=TYPE_NAME(b.system_type_id), '字段长度'=b.max_length from sys.views a join sys.columns b on a.object_id=b.object_id order by a.name 5、 获取视图中的对象信息 exec sp_depends '视图名' 查看存储过程信息 1、基本信息 select * from sys.procedures select * from sys.objects where type='P' 2、查看存储过程创建文本 sp_helptext 存储过程名称 select text from syscomments where id=object_id (存储过程名称) 3、查看存储过程的参数信息 (1)select '参数名称' = name, '类型' = type_name(xusertype)
'长度'=length,, '参数顺序'=colid from syscolumns where id=object_.id(存储过程名称) (2)select'参数名称'=name, '类型'=type_name(system_type_id), '长度'-max_length, '参数顺序'=parameter_.id from sys.parameters where object_.id=object_id(存储过程名称) 返回当前环境中可查询的指定表或视图的列信息。 exec sp_columns表名 select from sys.columns where object_id=0BJECT_id() select from sys.syscolumns where id=0BJECT_ID( select from information_schema.columns where TABLE_NAME= 查询存储过程或函数的参数的详细信息 获取所有数据库信息 1、获取数据库的基本信息 select name from sysdatabases order by name 2、获取某个数据库的文件信息 select*from[数据库名].[架构名].sysfiles 3、获取数据库磁盘使用情况
'长度' = length, '参数顺序' = colid from syscolumns where id=object_id(存储过程名称) (2)select '参数名称' = name, '类型' = type_name(system_type_id), '长度' = max_length, '参数顺序' =parameter_id from sys.parameters where object_id=object_id(存储过程名称) 返回当前环境中可查询的指定表或视图的列信息。 exec sp_columns 表名 select * from sys.columns where object_id=OBJECT_id(表名) select * from sys.syscolumns where id=OBJECT_ID(表名) select * from information_schema.columns where TABLE_NAME=表名 查询存储过程或函数的参数的详细信息 select * from sys.parameters where object_id=object_id(函数或存储过程 名称) 获取所有数据库信息 1、获取数据库的基本信息 select name from sysdatabases order by name 2、获取某个数据库的文件信息 select * from [数据库名].[架构名].sysfiles 3、获取数据库磁盘使用情况