Sql queries where is like

TIP: If you are pattern matching with char datatypes , remember that chars are padded with spaces at the end to fill the length of the field. This may give you unexpected results when you use the LIKE condition to pattern match at the end of a string. NOTE: You can only define an escape character as a single character. It is best to choose a character that will not appear in your data very often such as! Answer: To answer this question, let's look at an example. Share on:.

ON ph. WHERE ph. ORDER by p. LastName ;. FirstName ,. Person p. WHERE p. PersonPhone pp. WHERE pp. USE tempdb ;. The square brackets with a character range e. For example, the following query finds the customers where the first character in the last name is the letter in the range A through C :.

For example, the following query returns the customers where the first character in the last name is not the letter in the range A through X :. First, create a new table for the demonstration:. Maximum length is Charity Leschinski 2, 2 2 gold badges 21 21 silver badges 40 40 bronze badges. Rob van Wijk Rob van Wijk I'm curious, though, if performance would really be all that much worse.

If it is worse and how much worse it is, depends on how large your list of expressions is and whether the column is indexed or not, among others. It is just a warning, so that the original poster is not surprised when he starts implementing it.

Ok, this would work, but it's not going into my intended direction of making the SQL statement more easily readable : — selfawaresoup. Only use indenting and naming for SQL readability, when you make other modifications for readability only you risk changing the execution plan which affects index usage and performance. If you are not careful, you can easily change an instantly running query to a very slow one by making trivial changes.

The first statement of this answer is key -- most? SQL-based systems and languages don't support what you want, not without implementing work-arounds. I honestly don't know, I've never used FT indexing. I tossed it in as a sample of a possible work-around that's already included in the product. For what he's doing A or B or C , I suspect it doesn't do it, am fairly confident that it'd take a lot of effort to determine this, and know that its outside the scope of his original question does SQL do it natively.

Show 6 more comments. Benoit Benoit AssadEbrahim, no they are specific. For postgres see stackoverflow. But it's uglier than a set of OR statements — Fandango Fandango68, but the union of selects can be replaced by another source of patterns like a table, a view, etc. Outputs 1 Bass 2 Pike 7 Angler 8 Walleye. FrustratedWithFormsDesigner Famous Nerd Famous Nerd 4 4 silver badges 12 12 bronze badges.

A row will be duplicated if matched by many conditions at once. A-K A-K Well, that's exactly what I'd like to avoid. Although it works.