how to get substring from string using storedprocedure in sql server

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I have table data like this:

sno             component           subcomponent               Irnumber
1                   1                 c1 to c100                 001
2                   1                 c200 to c444               002
3                   1                 c450,c451,c455             003

here in the text box user enters c50....i need to retrieve first record

1              1              c1 to c100            001

please help me.

Posted 3-May-15 23:16pm

vemsoft

Updated 3-May-15 23:51pm

v3

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OriginalGriff · Answer 1 · 2015-05-03T23:29:00

Don't store it like that.
SQL is not good at string manipulations, and you need to find two numbers, extract them, validate them, convert them to an integer, and then compare them.
Instead, change your database to use two integer columns (and possibly an NVARCHAR column for the prefix) and use BETWEEN:

sno component prefix subcomponentStart subcomponentEnd Irnumber
1           1      C                 1             100      001

SQL

SELECT * FROM MyTable WHERE Prefix='C' AND ValueFromUser BETWEEN subcomponentStart AND subcomponentEnd