What are test cases in SQL?

A SQL test case is a set of information that enables a developer to reproduce the execution plan for a specific SQL statement that has encountered a performance problem. SQL Test Case Builder is a tool that automatically gathers information needed to reproduce the problem in a different database instance.

How do you write a test case for SQL queries?

Procedure: How to Test the SQL From the SQL Statement

1. Right-click the SQL object and click SQL Statement. The Select Statement dialog box opens, as shown in the following image.
2. Click the Test SQL Statement button in the upper-right corner. The Test SQL Statement dialog box shows a sample of the data.

How do you write test cases for database testing?

Database Testing Guidelines

1. Get clarity on the functional requirements.
2. Make a list of all the tables used and find out- Joins used between tables. Cursors used, triggers used. Stored procedures used. Input/Output parameters used.
3. Create test cases with multiple input data and try to cover all the paths.

How do you write junit test cases for SQL queries?

Each testing method, then, must:

1. Chose a proper set of parameter values.
2. (Optionally) Initialize the tested component in a required initial state.
3. Invoke the tested method.
4. Check that the returned result is equal to the expected result.
5. Clean up the tested component not to let any “dirt” from the executed test.

When to use case statement in unit testing?

The case statement is just case when test statements then ‘passed’ else ‘failed’ end. The test statements will just be SQL selects (subqueries) that must be true for the test to pass.

How does the case statement work in SQL?

The SQL CASE Statement The CASE statement goes through conditions and returns a value when the first condition is met (like an IF-THEN-ELSE statement). So, once a condition is true, it will stop reading and return the result. If no conditions are true, it returns the value in the ELSE clause.

Which is the best way to test a SQL query?

Let’s write some tests. 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 test statements then ‘passed’ else ‘failed’ end.

How to test for upper case and lower case in SQL?

An SQLfiddle to test with; Lower case letters have the same ASCII or UNICODE value as their upper-case version with the exception that lower case letters have a bit flag of 32 set. This is very easy to detect directly, or to wrap the detection into User-defined functions like IsUpper() and IsLower().