Using PatIndex and CharIndex like the InStr function

sql-server sql-server-2008 patindex charindex
Control Freak picture Control Freak · Aug 17, 2013 · Viewed 7.4k times · Source

I tried using Instr for this, but didn't work, so I found the supposed to be equivalent using PatIndex and CharIndex, however, I'm having an issue here when I run this:

SELECT PATINDEX(`http://www.stackoverflow.com`,'%.com%')

This returns 0

SELECT CHARINDEX(`http://www.stackoverflow.com`,'%.com%')

This returns 0

SELECT PATINDEX(`http://www.stackoverflow.com`,'.com')

This returns 0

SELECT CHARINDEX(`http://www.stackoverflow.com`,'.com')

This returns 0

How do I get this to work like InStr ?

If my calculation is correct, it should return 25 instead of 0, anyone know why it's not?

Answer

GSerg picture GSerg · Aug 17, 2013

You've got it reversed.

select patindex('%.com%', 'http://www.stackoverflow.com');
select charindex('.com', 'http://www.stackoverflow.com');

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