Sql where clause nested conditions of aid

August 8, 2018 at 12: What I say, is that you can't have a condition inside case statement.

Using Subqueries to Select Data

February 15, 2015 at 11: Perhaps you could explain what you're after in a different way? Mel Pama says: Well, I'll answer the former directly, and invite hypotheses for the latter.

sql where clause nested conditions of aid

IIF is a function that I expected to fall into this same trap, but this function is really just a searched CASE expression with only two possible outcomes, and no ELSE — so it is tough, without nesting and introducing other functions, to envision a scenario where this can break unexpectedly. I've been caught by several of these in the past, but will try and remember lessons from this post in the future.

Issues that hit product support over and over should be fixed in the product.

sql where clause nested conditions of aid

Again, your actual results will certainly vary, but shouldn't by much. All rights reserved. Not surprisingly, I have a few examples. When people think of CASE as a statement , it leads to experiments in code shortening like this: State, a. June 16, 2014 at 7: Emily says: By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies.

Dirty Secrets of the CASE Expression

July 3, 2018 at 1: Post Your Answer Discard By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. Previous Page Next Page.

One of the few limitations of the CASE expression is that is restricted to 10 nest levels. The preferred option, in my opinion, is to try and coerce SQL Server to evaluate the condition once though this isn't always possible within a single query.

sql where clause nested conditions of aid

An interesting side note: Logically, each non-deterministic function should be invoked once per row per instance of that function. After the subquery runs, it passes the results back to the outer query.

Use HAVING and WHERE Clauses in the Same Query (Visual Database Tools)

I tried something like that: Mark Sinkinson Mark Sinkinson 7,764 3 29 47. Here is an example:. Longitude 'Long', sqrt b.