SQL选择文本的一部分

Question

I'm looking to store the text of a stored procedure into a variable. I have the data appearing in a column, but I only want the data within the ALTER. I'm not that experienced with SQL, any help would be appreciated. Thanks.

SELECT ?????????????????????
FROM    sysobjects 
JOIN    sys.sql_modules 
        ON      sysobjects.id = sys.sql_modules.object_id
WHERE name = stored_procedure_name

--The column's name is 'definition'

Answer 1

You can stored the text into a variable as so:

DECLARE @proctext NVARCHAR(MAX)

SELECT @proctext = definition
FROM    sysobjects 
JOIN    sys.sql_modules 
        ON      sysobjects.id = sys.sql_modules.object_id
WHERE name = stored_procedure_name

I then recommend playing with the SUBSTRING , LEN , LEFT , and RIGHT functions of SQL Server to get the rest.

Also, you will most likely want to find the location of CREATE , BEGIN , and or END in the definition when using the functions.

Answer 2

Something like this might work. Haven't tested. Will need to play with the numbers used in SUBSTRING function to get the right result.

SELECT SUBSTRING([definition], CHARINDEX([definition], 'alter', 0) + 5 , LEN([definition]))
FROM    sysobjects 
JOIN    sys.sql_modules 
        ON      sysobjects.id = sys.sql_modules.object_id

Answer 3

Try this:

select ALTER_DEF=STUFF([definition],PATINDEX('%CREATE%',[definition]),6,'ALTER')
from sys.sql_modules s
inner join sys.procedures p on s.object_id=p.object_id

Answer 4

I thinks you are using Microsoft SQL Server (sysobjects). To do this you need to ask for data "syscomments":

select ctext from syscomments where id = object_id(N'procedurename')

Ctext contain procedure content!