PostgreSQL – How to Disable(Lock) a User

To list the tables used by a view in PostgreSQL, you can query the system catalog to inspect the view’s underlying SQL query. PostgreSQL stores view definitions in the pg_views system catalog table. Here’s how you can retrieve the tables used by a specific view: SELECT table_name FROM information_schema.tables WHERE table_schema = ‘public’ AND table_name…

Superusers have full control over the database server and can perform any administrative task. Granting superuser privileges to a user should be done carefully, as it comes with significant power and responsibility. To grant superuser privileges to a user in PostgreSQL, follow these steps: Option 1: During PostgreSQL Installation Option 2: Using an Existing Superuser…

You can extract date from a timestamp using various functions depending on the specific part of the date you want to extract. Here are some commonly used functions for extracting different parts of a date from a timestamp: Extracting Date Only (Year, Month, and Day):To extract only the date (year, month, and day) from a…

To describe a table in PostgreSQL and retrieve information about its columns and data types, you can use the \d command in the psql command-line tool or execute a SQL query. Here are two common methods to describe a table: Method 1: Using \d in psql (Command-Line Tool): Open a terminal and start the psql…

To find the owner of a table in PostgreSQL, you can use the following SQL query: SELECT tablename, tableowner FROM pg_catalog.pg_tables WHERE schemaname = ‘my_schema’ AND tablename = ‘your_table_name’; where ‘my_schema’ is the name of the schema where your table resides, and ‘your_table_name’ is the name of the table you want to find the owner…

To drop (delete) a view in PostgreSQL, you can use the DROP VIEW statement followed by the name of the view you want to remove. Here’s the basic syntax for dropping a view: DROP VIEW [IF EXISTS] view_name; where Here’s an example of how to drop a view in PostgreSQL: DROP VIEW IF EXISTS high_salary_employees;…