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Wildcards in SQL

thread220-1693

Wildcards in SQL

Wildcards in SQL

(OP)
I am trying to program a routine to check for certain elements within an email address. i.e. *@mailserver.com The problem is that I can't see a way to have sql check for wildcards. Actually at this moment I am using Access to program my database. I am using some sql in my programming. Is there a way to do this? Or do I need to migrate over to SQL Server to do it? Can it even be done?

RE: Wildcards in SQL

I don't know about Access, but in VFP you can imbed VFP functions in SQL - which isn't a good idea if you're planning to upsize to SQL server, and there is a performance hit. An example: SELECT * FROM names WHERE '@mailserver.com' $(lower(email)) The VFP $ operator means "is contained in".

RE: Wildcards in SQL

I don't mean to sound dumb, but what is VFP?

RE: Wildcards in SQL

I think what you're looking for is: Select * from names where mail like '%@mailserver.com' The % is a wildcard operator in SQL.

RE: Wildcards in SQL

Captaincaveman has the right of it. The original SQL standard specifies % (percent) as the multi-character wildcard symbol and _ (underscore) as the singl-character wildcard symbol. However, MS Access (and several other database systems) use the DOS wildcard symbols, * form multi-character and ? for single-character. I've even run across one odd-ball DBMS that allowed both!

RE: Wildcards in SQL

using the 'LIKE %String%'in the Where clause will return true if the 'String' exist in the row being examined, regardless of the position of the 'String' in the row.
For example:

Select * from myTable WHERE ColumnX LIKE %ABCD%

will return true if 'ABCD' was found in ColumnX.

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