找出数据库中所有的数据库名：

　　

DECLARE @databaseName VARCHAR(100)DECLARE @itemCur CURSORSET @itemCur = CURSOR FOR     SELECT name FROM sys.databases         WHERE database_id > 4OPEN @itemCurFETCH NEXT FROM @itemCur INTO @databaseName--读取下一条游标是否成功WHILE @@FETCH_STATUS=0BEGIN    --逻辑处理    PRINT @databaseName        FETCH NEXT FROM @itemCur INTO @databaseNameEND CLOSE @itemCurDEALLOCATE @itemCur

 

 

鼠标轨迹字字符串分割：

1.创建测试表

--创建测试表[VisiteLog]CREATE TABLE [dbo].[VisiteLog](    [Id] [int] IDENTITY(1,1) NOT NULL,    [PosSet] [varchar](500) NULL, CONSTRAINT [PK_VisiteLog] PRIMARY KEY CLUSTERED (    [Id] ASC)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]) ON [PRIMARY]GO--插入测试数据SET IDENTITY_INSERT [dbo].[VisiteLog] ONINSERT [dbo].[VisiteLog] ([Id], [PosSet]) VALUES (1, N'[573,1103,2010-09-03 22:32:35],[864,110,2010-09-03 22:32:57]')INSERT [dbo].[VisiteLog] ([Id], [PosSet]) VALUES (2, N'[513,1303,2010-09-03 22:34:35]')SET IDENTITY_INSERT [dbo].[VisiteLog] OFF--查看数据SELECT * FROM [dbo].[VisiteLog]

 结果：

2.创建表PosSetInfo，这个表是用来保存鼠标轨迹字符串分割后的数据

 

--创建表[PosSetInfo]CREATE TABLE [dbo].[PosSetInfo](    [ID] [int] NULL,    [PosSet_x] [int] NULL,    [PosSet_y] [int] NULL,    [PosTime] [datetime] NULL) ON [PRIMARY]GO

 

 3.创建了一个函数，它的作用是把字符串@str以@split分隔符进行分隔，返回第@index次匹配的元素。

CREATE FUNCTION [dbo].[Get_StrArrayStrOfIndex](    @str VARCHAR(5000),  --要分割的字符串    @split VARCHAR(10),  --分隔符号    @index INT --取第几个元素)RETURNS VARCHAR(5000)ASBEGIN    DECLARE @location INT    DECLARE @start INT    DECLARE @next INT    DECLARE @seed INT    SET @str=LTRIM(RTRIM(@str))    SET @start=1    SET @next=1    SET @seed=LEN(@split)      SET @location=CHARINDEX(@split,@str)    WHILE @location<>0 and @index>@next    BEGIN        SET @start=@location+@seed        SET @location=CHARINDEX(@split,@str,@start)        SET @next=@next+1    END    IF @location =0 SELECT @location =LEN(@str)+1     RETURN SUBSTRING(@str,@start,@location-@start)END--测试函数SELECT DBO.[Get_StrArrayStrOfIndex]('AB,CDE,FG,HIJK',',',3);

 

4.VisiteLog表的数据进行分割，再把分割后的字符串保存到PosSetInfo表中

--鼠标轨迹字符串分割DECLARE @ID int,@PosSet VARCHAR(2000)DECLARE @splitlen INTDECLARE @split NVARCHAR(10)DECLARE @temp VARCHAR(100)DECLARE @PosSet_x INTDECLARE @PosSet_y INTDECLARE @PosTime DATETIMESET @split = ']'DECLARE @itemCur CURSORSET @itemCur = CURSOR FOR     SELECT ID,PosSet FROM [VisiteLog]        WHERE PosSet <> ''OPEN @itemCurFETCH NEXT FROM @itemCur INTO @ID,@PosSetWHILE @@FETCH_STATUS=0BEGIN    SET @splitlen=LEN(@split+'a')-2    WHILE CHARINDEX(@split,@PosSet)>0    BEGIN        SET @Temp = LEFT(@PosSet,CHARINDEX(@split,@PosSet)-1)        SET @Temp = replace(replace(@Temp,',[',''),'[','')        SET @PosSet_x = dbo.Get_StrArrayStrOfIndex(@Temp,',',1)        SET @PosSet_y = dbo.Get_StrArrayStrOfIndex(@Temp,',',2)        SET @PosTime = dbo.Get_StrArrayStrOfIndex(@Temp,',',3)        INSERT PosSetInfo VALUES(@ID,@PosSet_x,@PosSet_y,@PosTime)        SET @PosSet=STUFF(@PosSet,1,CHARINDEX(@split,@PosSet)+@splitlen,'')    END    FETCH NEXT FROM @itemCur INTO @ID,@PosSetEND CLOSE @itemCurDEALLOCATE @itemCur

 5.看PosSetInfo表的数据

 

SELECT * FROM [dbo].[PosSetInfo]

 

 

6.补充：

--循环每个数据库EXEC sp_MSForEachDB 'USE [?];SELECT * FROM sys.database_files'