使用SQL Server 2014，我要在一个字段中搜索并返回找到的字符串的所有实例以及以下单词。例如，列中的文本可能是：
“ exec sproc1，然后在此处输入更多文本，然后可能执行sproc2 exec，storageproc3和exec sproc1”
我想优雅地返回“ sproc1，sproc2，storedproc3，sproc1”，因为每个都是exec或execute后面的单词（由空格分隔）。如您在示例中所看到的，前导词可能会有所不同，存储过程名称的长度也可能会有所不同。我已经能够返回exec / execute的首次用法；我的问题是有时候有多个（见下文）。
REPLACE(REPLACE(CASE
WHEN [sJSTP].[subsystem]='TSQL' AND CHARINDEX('EXECUTE',[sJSTP].[command],1)>0
THEN SUBSTRING([sJSTP].[command],CHARINDEX('EXECUTE',[sJSTP].[command],1)+8,
IIF(
CHARINDEX(' ',[sJSTP].[command],CHARINDEX('EXECUTE',[sJSTP].[command],1)+8)>0,
CHARINDEX(' ',[sJSTP].[command],CHARINDEX('EXECUTE',[sJSTP].[command],1)+8)-CHARINDEX('EXECUTE',[sJSTP].[command],1)-8,
LEN([sJSTP].[command])))
WHEN [sJSTP].[subsystem]='TSQL' AND CHARINDEX('EXEC',[sJSTP].[command],1)>0 AND CHARINDEX('DCEXEC',[sJSTP].[command],1)<=0
THEN SUBSTRING([sJSTP].[command],CHARINDEX('EXEC',[sJSTP].[command],1)+5,
IIF(
CHARINDEX(' ',[sJSTP].[command],CHARINDEX('EXEC',[sJSTP].[command],1)+5)>0,
CHARINDEX(' ',[sJSTP].[command],CHARINDEX('EXEC',[sJSTP].[command],1)+5)-CHARINDEX('EXEC',[sJSTP].[command],1)-5,
LEN([sJSTP].[command])))
END,'[',''),']','') AS sprocname
此方法的最终用途是解析msdb..sysjobsteps表中的作业命令，以查看正在使用哪些存储过程。
编辑：添加示例数据
示例1： exec Quarterly_run 1，“ BW” exec Quarterly_run_2 1，'QR' exec Quarterly_run 2，“ VAS” exec Quarterly_run 1，“ WR” exec Quarterly_run 3，'RW' exec Quarterly_run_2 1，'ASF' exec Quarterly_run_3 1，'全部'
示例2： 声明@rundate datetime，@ rptqtr datetime，@ qtr int
set @rundate = getdate（） 设置@rptqtr ='2016/06/30'
设置@qtr =（选择datediff（季度，@ rptqtr，@运行日期））
exec Quarterly_extract @qtr
示例3： exec Daily_Sync_Process exec Daily_Process
答案 0 :(得分：1)
因此，如果您想立即获得exec之后的内容，那么我将在该空间上拆分，然后使用自连接。这是使用以下函数的代码，该函数为Jeff Moden's splitter.
with cte as(
select
job_id
,step_name
,step_id
,s.ItemNumber
,s.Item
from msdb..sysjobsteps
--split on the space
cross apply dbo.DelimitedSplit8K(command,' ') s)
select
c.job_id
,c.step_id
,c.step_name
,c.Item
,c2.Item
from cte c
--self join to get exec myproc in the same row
full join
cte c2 on
c2.ItemNumber = c.ItemNumber + 1
and c.job_id = c2.job_id
and c.step_id = c2.step_id
--we only care where the base table has exec or execute (not executed, etc)
where c.Item = 'exec' or c.Item = 'execute'
order by
c.job_id, c.step_id, c.ItemNumber
重要的是要意识到这会失败，例如，命令为exec someproc且有两个空格。您可以使用replace()来解决此问题，但是您必须多次嵌套此替换，以容纳所需的任意数量的空间。您可以在拆分器功能的command列上进行处理
--here we replace two spaces with 1 for the entire command
cross apply dbo.DelimitedSplit8K(replace(command,' ',' '),' ') s)
SPLITER FUNCTION
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE FUNCTION [dbo].[DelimitedSplit8K] (@pString VARCHAR(8000), @pDelimiter CHAR(1))
--WARNING!!! DO NOT USE MAX DATA-TYPES HERE! IT WILL KILL PERFORMANCE!
RETURNS TABLE WITH SCHEMABINDING AS
RETURN
/* "Inline" CTE Driven "Tally Table" produces values from 1 up to 10,000... enough to cover VARCHAR(8000)*/
WITH E1(N) AS (
SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL
SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL
SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1
), --10E+1 or 10 rows
E2(N) AS (SELECT 1 FROM E1 a, E1 b), --10E+2 or 100 rows
E4(N) AS (SELECT 1 FROM E2 a, E2 b), --10E+4 or 10,000 rows max
cteTally(N) AS (--==== This provides the "base" CTE and limits the number of rows right up front
-- for both a performance gain and prevention of accidental "overruns"
SELECT TOP (ISNULL(DATALENGTH(@pString),0)) ROW_NUMBER() OVER (ORDER BY (SELECT NULL)) FROM E4
),
cteStart(N1) AS (--==== This returns N+1 (starting position of each "element" just once for each delimiter)
SELECT 1 UNION ALL
SELECT t.N+1 FROM cteTally t WHERE SUBSTRING(@pString,t.N,1) = @pDelimiter
),
cteLen(N1,L1) AS(--==== Return start and length (for use in substring)
SELECT s.N1,
ISNULL(NULLIF(CHARINDEX(@pDelimiter,@pString,s.N1),0)-s.N1,8000)
FROM cteStart s
)
--===== Do the actual split. The ISNULL/NULLIF combo handles the length for the final element when no delimiter is found.
SELECT ItemNumber = ROW_NUMBER() OVER(ORDER BY l.N1),
Item = SUBSTRING(@pString, l.N1, l.L1)
FROM cteLen l
GO
答案 1 :(得分：1)
另一个内联选项，并且不限于8K
示例
Declare @YourTable table (ID int,SomeCol varchar(max))
Insert into @YourTable values
(1,'exec quarterly_run 1, ''BW'' exec quarterly_run_2 1, ''QR '' exec quarterly_run 2, ''VAS'' exec quarterly_run 1, ''WR'' exec quarterly_run 3, ''RW'' exec quarterly_run_2 1, ''ASF'' exec quarterly_run_3 1, ''ALL''')
,(2,'declare @rundate datetime, @rptqtr datetime, @qtr int
set @rundate = getdate() set @rptqtr = ''06/30/2016''
set @qtr = (select datediff(quarter,@rptqtr,@rundate))
exec quarterly_extract @qtr
')
,(3,'exec Daily_Sync_Process exec Daily_Process')
;with cte as (
Select A.ID
,C.*
From @YourTable A
Cross Apply (values (replace(replace(SomeCol,char(13),' '),char(10),' '))) B(CleanString)
Cross Apply (
Select RetSeq,RetVal = case when Lag(RetVal,1) over (Order by RetSeq) in ('Exec','Execute') then RetVal else null end
From (
Select RetSeq = Row_Number() over (Order By (Select null))
,RetVal = LTrim(RTrim(B.i.value('(./text())[1]', 'varchar(max)')))
From (Select x = Cast('<x>' + replace((Select replace(CleanString,' ','§§Split§§') as [*] For XML Path('')),'§§Split§§','</x><x>')+'</x>' as xml).query('.')) as A
Cross Apply x.nodes('x') AS B(i)
) C1
) C
)
Select A.ID
,NewString = Stuff((Select ', ' +RetVal From cte Where ID=A.ID Order By RetSeq For XML Path ('')),1,2,'')
From cte A
Group By A.ID
返回
ID NewString
1 quarterly_run, quarterly_run_2, quarterly_run, quarterly_run, quarterly_run, quarterly_run_2, quarterly_run_3
2 quarterly_extract
3 Daily_Sync_Process, Daily_Process