How do you unit test a SQL query?

How do you perform a unit test in SQL?

In this article

  1. Prerequisites.
  2. Create a Script that Contains a Database Schema.
  3. Create a Database Project and Import a Schema.
  4. Deploying to LocalDB.
  5. Create SQL Server Unit Tests.
  6. Define Test Logic.
  7. Run SQL Server Unit Tests.
  8. Add a Negative Unit Test.

How do you write a unit test case for SQL queries?

A typical SQL unit testing scenario is as follows:

  1. Create a database object to meet some business requirement.
  2. Create a SQL unit test to check the database object.
  3. Run SQL unit test to check the database object does the job or not.
  4. If the test is passed then move on to the next SQL unit test.

How do I test a SQL query in Junit?

1 Answer

  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.
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How do I test a SQL statement?

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.

What is unit testing and how it is done?

Unit testing is a software development process in which the smallest testable parts of an application, called units, are individually and independently scrutinized for proper operation. This testing methodology is done during the development process by the software developers and sometimes QA staff.

What is unit testing in database?

April 8, 2019 by Esat Erkec. SQL unit testing is a testing method which allows us to test the smallest, atomic programmable part of a database object. SQL unit testing plays a key role in the modern database development cycle because it allows us to test individual parts of the database objects work as expected.

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 I test SQL queries online?

How to test MySQL queries online?

  1. Enter your SQL query in the editor, finally click on “Run” to execute it. The query result will be displayed below the editor .
  2. You can also run only one query entered in the editor. …
  3. If you want to export the results in csv format, click on “Export”.
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How do I create a test database in SQL?

Create Databases

  1. Launch Microsoft SQL Server Management Studio.
  2. Right-click on Databases and select New Database… – the New Database window will open.
  3. Database Name = TECAT.
  4. Click the OK button to create the database.
  5. Repeat steps 2-4 to create the TELIB, TELOCAL, TESTATS and TEWEB (If applicable) databases.

How do you test a big query?

Unit tests in BigQuery (standard) SQL

  1. Create BigQuery object (dataset, table, UDF) to meet some business requirement.
  2. Create a SQL unit test to check the object.
  3. Run SQL unit test to check the object does the job or not.
  4. If the test is passed then move on to the next SQL unit test.

How do you test a database?

How to Test the Database (Step-by-step Process)

  1. Step #1) Prepare the environment.
  2. Step #2) Run a test.
  3. Step #3) Check test result.
  4. Step #4) Validate according to the expected results.
  5. Step #5) Report the findings to the respective stakeholders.

How can I test a SQL script without executing?

A solution for this is the noexec parameter. By default it is set to off but it can be enabled, if you want to test a script without executing it. The parameter tells SQL Server to parse the script and that is it, no execution.

What is ETL Testing?

ETL — Extract/Transform/Load — is a process that extracts data from source systems, transforms the information into a consistent data type, then loads the data into a single depository. ETL testing refers to the process of validating, verifying, and qualifying data while preventing duplicate records and data loss.

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