What is Pgbench in PostgreSQL?

What is Pgbench in PostgreSQL?

pgbench is a simple program for running benchmark tests on PostgreSQL. It runs the same sequence of SQL commands over and over, possibly in multiple concurrent database sessions, and then calculates the average transaction rate (transactions per second).

What is tSQLt?

tSQLt is a unit testing framework for SQL Server. It provides the APIs to create and execute test cases, as well as integrates them with continuous integration servers (such as CruiseControl, TFS and Bamboo). tSQLt is designed with many unique features which make it easy to maintain tests.

How many writes per second Postgres?

Assuming you are using a normal harddisk (i.e. no ssd) you can expect a maximum of 50-100 writes per second. It seems that 15 writes per second is slightly low, but not impossible. So if Postgres is doing 1500 updates per second they are either written to some buffer/cache or collapsed into a single update.

How do I run Pgbench?

How to use pgbench for PostgreSQL benchmark testing

1. Pgbench is used for Postgresql benchmark testing.
2. Notes.
3. Create a test database.
4. Initialise the pgbench db – this will create the sample tables in the db.
5. Schema | Name | Type | Owner.
6. Establish a baseline.
7. Get Results.
8. Read more on benchmark performance testing.

How do I test SQL code?

How to unit test a SQL query?

1. create a view from my SQL query, for example called my_query.
2. (for each test case) create a test-query that compares the outcome from this view with the inline defined query result.

How do I add pgtap to a PostgreSQL database?

Once pgTAP is installed, you can add it to a database by connecting as a super user and running: If you’ve upgraded your cluster to PostgreSQL 9.1 and already had pgTAP installed, you can upgrade it to a properly packaged extension with:

What is the use of pgtap?

It includes a comprehensive collection of TAP -emitting assertion functions, as well as the ability to integrate with other TAP-emitting test frameworks. It can also be used in the xUnit testing style. For detailed documentation, see the documentation in doc/pgtap.mmd or online.

How to run multiple tap tests at once in PostgreSQL?

Then you can just call the function to run all of your TAP tests at once: Name of a schema containing pgTAP test functions. Regular expression pattern against which to match function names. If you like you can create a whole slew of these batched tap functions, and then use the do_tap () function to run them all at once.

How to test result sets in PostgreSQL pgtap?

A PostgreSQL refcursor value representing a named cursor. A short description of the test. There are three ways to test result sets in pgTAP. Perhaps the most intuitive is to do a direct row-by-row comparison of results to ensure that they are exactly what you expect, in the order you expect.