In this guide, the following set-up is needed:
A first solution is to modify PostgreSQL postgresql.conf configuration file:
The use of indexes to assist with large blocks of tables, data may have considerable impact on reducing MySQL query execution and, thus,
A database system executes each query in one or several steps.
To display the query plan, run EXPLAIN my_query using an SQL client like PhpMyAdmin or any other MySQL client.
To display the query plan, run EXPLAIN my_query using an SQL client like pgAdmin3 or any other PostgreSQL client.
When processing queries, the database has two possibilities:
Multi-column indexes can be rather tricky to understand. An index on several columns is not symmetric and doesn't work equally on every
Running a JOIN on two columns of different data types may force a sequential scan.
Writing code compliant with both MySQL and PostgreSQL