SQL server 数据库巡检

SELECT name FROM sysobjects where xtype=\'u\' and name <>\'XzryGzGrant\' AND name LIKE \'XzryGzGrant2021%\'
SELECT name FROM sys.tables WHERE TYPE=\'U\' AND PATINDEX(\'%[^0-9][0-9]%\',name)>0 ORDER BY name
--备份表
--SQL Server中，如果目标表存在：
insert into 目标表 select * from 原表;
--SQL Server中,，如果目标表不存在：
select * into 目标表 from 原表;

--查询外键
SELECT fk.name fkname,
ftable.name ftablename,
cn.name fkcol,
rtable.name ftablename,
\'ALTER TABLE \' + ftable.name + \' DROP constraint \' + fk.name + \'\'
FROM sysforeignkeys
JOIN sysobjects fk ON sysforeignkeys.constid = fk.id
JOIN sysobjects ftable ON sysforeignkeys.fkeyid = ftable.id
JOIN sysobjects rtable ON sysforeignkeys.rkeyid = rtable.id
JOIN syscolumns cn ON sysforeignkeys.fkeyid = cn.id AND sysforeignkeys.fkey = cn.colid
WHERE rtable.name = \'DeviceInfo\';

--SQL查看数据库中每张表的数据量和总数据量
SELECT a.name AS 表名, MAX(b.rows) AS 记录条数,\'truncate table \'+a.name+\';\'
FROM sys.sysobjects AS a INNER JOIN sys.sysindexes AS b  ON a.id = b.id
WHERE (a.xtype = \'u\') and b.rows>0 and  a.name not in(\'System_Info\',\'base_dbkey\',\'SYSTEM_MENU\',\'Base_Group\')
GROUP BY a.name ORDER BY 记录条数 DESC;

--最耗时的SQL
SELECT TOP 20
       total_worker_time / 1000 AS [总消耗CPU 时间(ms)],
       execution_count [运行次数],
       qs.total_worker_time / qs.execution_count / 1000 AS [平均消耗CPU 时间(ms)],
       last_execution_time AS [最后一次执行时间],
       max_worker_time / 1000 AS [最大执行时间(ms)],
       SUBSTRING(qt.text, qs.statement_start_offset / 2 + 1,
        (CASE  WHEN qs.statement_end_offset = -1 THEN   DATALENGTH(qt.text)
         ELSE  qs.statement_end_offset END - qs.statement_start_offset) / 2 + 1
         ) AS [使用CPU的语法],
       qt.text [完整语法],
       dbname = DB_NAME(qt.dbid),
       OBJECT_NAME(qt.objectid, qt.dbid) ObjectName
FROM sys.dm_exec_query_stats qs WITH (NOLOCK) CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) AS qt
WHERE execution_count > 1 ORDER BY total_worker_time DESC;

--SQL查看数据库中每张表的数据量和总数据量
SELECT a.name AS 表名, MAX(b.rows) AS 记录条数,\'truncate table \'+a.name+\';\'
FROM sys.sysobjects AS a INNER JOIN sys.sysindexes AS b  ON a.id = b.id
WHERE (a.xtype = \'u\') AND a.name LIKE \'%xck_ClassHour%\'
GROUP BY a.name ORDER BY 记录条数 DESC;


--查看数据库中每个表数据大小
IF OBJECT_ID(\'tempdb..#TablesSizes\') IS NOT NULL
DROP TABLE #TablesSizes
CREATE TABLE #TablesSizes(
    TableName sysname ,
    Rows BIGINT ,
    reserved VARCHAR(100) ,
    data VARCHAR(100) ,
    index_size VARCHAR(100) ,
    unused VARCHAR(100)
)
DECLARE @sql VARCHAR(MAX)
SELECT  @sql = COALESCE(@sql, \'\') + \'INSERT INTO #TablesSizes execute sp_spaceused \'\'\' + QUOTENAME(TABLE_SCHEMA, \'[]\') + \'.\' + QUOTENAME(Table_Name, \'[]\') + \'\'\'\'
FROM  INFORMATION_SCHEMA.TABLES
WHERE   TABLE_TYPE = \'BASE TABLE\'
PRINT ( @SQL )
EXECUTE (@SQL)
SELECT  * FROM #TablesSizes ORDER BY Rows DESC


--查看索引：
SELECT CASE WHEN t.[type] = \'U\' THEN \'表\'  WHEN t.[type] = \'V\' THEN \'视图\' END AS \'类型\',
       SCHEMA_NAME(t.schema_id) + \'.\' + t.[name] AS \'(表/视图)名称\',
       i.[name] AS 索引名称,  SUBSTRING(column_names, 1, LEN(column_names) - 1) AS \'列名\',
       CASE WHEN i.[type] = 1 THEN \'聚集索引\'
           WHEN i.[type] = 2 THEN\'非聚集索引\'
           WHEN i.[type] = 3 THEN \'XML索引\'
           WHEN i.[type] = 4 THEN \'空间索引\'
           WHEN i.[type] = 5 THEN \'聚簇列存储索引\'
           WHEN i.[type] = 6 THEN \'非聚集列存储索引\'
           WHEN i.[type] = 7 THEN \'非聚集哈希索引\'
       END AS \'索引类型\',
       CASE WHEN i.is_unique = 1 THEN \'唯一\' ELSE \'不唯一\' END AS \'索引是否唯一\'
FROM sys.objects t
INNER JOIN sys.indexes i ON t.object_id = i.object_id
CROSS APPLY(SELECT col.[name] + \', \' FROM sys.index_columns ic 
INNER JOIN sys.columns col ON ic.object_id = col.object_id AND ic.column_id = col.column_id
WHERE ic.object_id = t.object_id  AND ic.index_id = i.index_id
ORDER BY col.column_id
FOR XML PATH(\'\')
) D(column_names)
WHERE t.is_ms_shipped <> 1 AND index_id > 0
ORDER BY i.[name];

--查看索引使用情况SQL语句：
select db_name(database_id) as N\'数据库名称\',
       object_name(a.object_id) as N\'表名\',
       b.name N\'索引名称\',
       user_seeks N\'用户索引查找次数\',
       user_scans N\'用户索引扫描次数\',
       last_user_seek N\'最后查找时间\',
       last_user_scan N\'最后扫描时间\',
       rows as N\'表中的行数\'
from sys.dm_db_index_usage_stats a join 
     sys.indexes b
     on a.index_id = b.index_id
     and a.object_id = b.object_id
     join sysindexes c
     on c.id = b.object_id
where database_id=db_id(\'数据库名\')   --指定数据库
     and object_name(a.object_id) not like \'sys%\'
     and object_name(a.object_id) like \'表名\'  --指定索引表
     and b.name like \'索引名\' --指定索引名称 可以先使用 sp_help \'你的表名\' 查看表的结构和所有的索引信息
order by user_seeks,user_scans,object_name(a.object_id)

--查询触发器
select * from sysobjects where xtype=\'TR\'

--SQL SERVER 查看数据库安装时间
SELECT * FROM sys.server_principals WHERE name = \'NT AUTHORITY\SYSTEM\';

--查看SQL SERVER数据库的连接数
SELECT * FROM master.dbo.sysprocesses WHERE dbid = DB_ID(\'hdj_ams_zs\');

--数据库的磁盘空间使用信息
EXEC sp_spaceused;

--日志文件占用大小
DBCC SQLPERF(LOGSPACE);

--指定数据库的文件组和文件空间占用大小
SELECT df.[name],
       df.physical_name,
       df.[size],
       df.growth,
       f.[name] [filegroup],
       f.is_default
FROM sys.database_files df
JOIN sys.filegroups f ON df.data_space_id = f.data_space_id;

--内存占用
SELECT *FROM sys.sysperfinfo WHERE counter_name LIKE \'%Memory%\';

--会话
EXEC sp_who;
EXEC sp_lock 
--查看数据库允许的最大连接
select @@MAX_CONNECTIONS
--查看数据库自上次启动以来的连接次数
SELECT @@CONNECTIONS
--关闭连接 kill 54

--用户信息
EXEC sp_helpsrvrolemember;


-- 数据库IO
SELECT  db.name AS 数据库,
        f.fileid AS 文件Id,
        f.filename AS 文件路径,
        i.num_of_reads AS 读取次数,
        i.num_of_bytes_read 读取总字节数,
        i.io_stall_read_ms \'等待读取时间(毫秒)\',
        i.num_of_writes AS 写入次数,
        i.num_of_bytes_written AS 写入总字节数,
        i.io_stall_write_ms AS \'等待写入时间(毫秒)\',
        i.io_stall AS 等待IO完成总时间,
        i.size_on_disk_bytes 磁盘占用字节数
FROM    sys.databases db
        INNER JOIN sys.sysaltfiles f ON db.database_id = f.dbid
        INNER JOIN sys.dm_io_virtual_file_stats(NULL,NULL) i ON i.database_id = f.dbid AND i.file_id = f.fileid;

--查询端口号
exec sys.sp_readerrorlog 0, 1, \'listening\'

--SqlServer_查看SQLServer版本信息
SELECT @@VERSION

--查询哪些死锁 右键服务器->打开活动和监视器，，就可以看到监控的一些信息，阻塞信息，查询的耗时等
SELECT request_session_id spid, OBJECT_NAME( resource_associated_entity_id )
tableName FROM sys.dm_tran_locks WHERE resource_type = \'OBJECT\'
--kill spid  --杀死进程


--数据库结构
SELECT d.name  AS 表名, 
isnull(f.value, \'\') AS 表说明, 
a.colorder AS 字段序号, 
a.name AS 字段名,ISNULL(g.[value], \'\') AS 字段说明, 
CASE WHEN COLUMNPROPERTY(a.id, a.name, \'IsIdentity\') = 1 THEN \'√\' ELSE \'\' END AS 标识, 
CASE WHEN EXISTS(SELECT 1  FROM dbo.sysindexes si INNER JOIN 
dbo.sysindexkeys sik ON si.id = sik.id AND si.indid = sik.indid INNER JOIN dbo.syscolumns sc 
ON sc.id = sik.id AND sc.colid = sik.colid INNER JOIN  dbo.sysobjects so 
ON so.name = si.name AND so.xtype = \'PK\' WHERE sc.id = a.id AND sc.colid = a.colid) THEN \'√\' ELSE \'\' END AS 主键, 
b.name AS 类型, a.length AS 长度, COLUMNPROPERTY(a.id, a.name, \'PRECISION\')AS 精度, 
ISNULL(COLUMNPROPERTY(a.id, a.name, \'Scale\'), 0) AS 小数位数,CASE WHEN a.isnullable = 1 THEN \'√\' ELSE \'\' END AS 允许空, 
ISNULL(e.text, \'\') AS 默认值 FROM dbo.syscolumns a LEFT OUTER JOIN   
dbo.systypes b ON a.xtype = b.xusertype INNER JOIN dbo.sysobjects d ON a.id = d.id AND d.xtype = \'U\' AND  
d.status >= 0 LEFT OUTER JOIN   dbo.syscomments e ON a.cdefault = e.id LEFT OUTER JOIN sys.extended_properties g 
ON a.id = g.major_id AND a.colid = g.minor_id AND  g.name = \'MS_Description\' LEFT OUTER JOIN  
sys.extended_properties f ON d.id = f.major_id AND f.minor_id = 0 AND f.name = \'MS_Description\'