Re: SQL syntax

On 03/02/2018 04:36 PM, Dale Seaburg wrote:
> My mind is drawing a blank.  Not sure where to go to find the answer.
> Here is the statement in C#:
>
> sSQL = "SELECT \"Image_Filename\" FROM \"Instruments\" WHERE ";
>
> To finish off the WHERE clause, I need to look at the first 2 letters,
> like "D:".  My question is how do I specify in the WHERE clause, to look
> at the first 2 characters in the Image_Filename column?  What is the
> correct SQL syntax for looking at just a portion of a column?

SELECT "Image_Filename" FROM "Instruments" WHERE "ImageFilename" LIKE 'D:%';

If you want case insensitive then ILIKE. For more info:
https://www.postgresql.org/docs/10/static/functions-matching.html#FUNCTIONS-LIKE

>
> I feel so dumb...  This can't be that hard, but I am exhausted and
> running out of ideas.  I need someone to give me a boost!  ;-)
>
> Thanks,
> Dale.
>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com