Efficient SQL test query or validation query that will work across all (or most) databases Asked 15 years, 2 months ago Modified 4 years, 3 months ago Viewed 197k times

Our test will be a SQL select query, with the following structure: a test name and a case statement catenated together. The test name is just an arbitrary string. The case statement is just case when …

I need to load a table with a large amount of test data. This is to be used for testing performance and scaling. How can I easily create 100,000 rows of random/junk data for my database table?

Here are some guidelines: Use an isolated database for unit testing (e.g. No other test runs or activity) Always insert all the test data you intend to query within the same test Write the tests to randomly …

I would like this to be the ultimate discussion on how to check if a table exists in SQL Server 2000/2005 using SQL Statements. Here are two possible ways of doing it. Which one is the standard/bes...

For what I'm trying to do, the SQL query SELECT lastname, firstname, phonenumber WHERE phonenumber IS NOT NULL ORDER BY lastname would do the trick. It seems too simple for it to be …

@Eric: In SQL a predicate needs to produce a Boolean result. A "where active" does not produce such a result, because even if 'active' was a BIT data type - a BIT is not a Boolean value, it's an integer …

Testing on SQL Server 2017, this does work for multiple white spaces without TRIM. It doesn't make sense to me, because according the documentation NULLIF should return NULL only if the two …

Can anyone point out how to check if a select query returns non empty result set? For example I have next query: SELECT * FROM service s WHERE s.service_id = ?; Should I do something like next: ...

Mar 12, 2010 · If your query has a syntax error, then it will still fail, however if successful you will only see the results of an EXPLAIN and the query will not make any changes. This is much simpler than …