PostgreSQL – How to Rename a User

Below is the syntax to create a table in PostgreSQL. CREATE TABLE table_name ( column1 datatype1, column2 datatype2, … ); where table_name is the name you want to give to the new table. and column1, column2, etc.: specifies the names of the columns you want to create in the table. and datatype1, datatype2, etc.: specifies…

To update multiple columns in a PostgreSQL table, you can use the UPDATE statement. Below is the basic syntax for updating multiple columns: UPDATE table_name SET column1 = value1, column2 = value2, … WHERE condition; where Here’s an example of how to update multiple columns in a PostgreSQL table: Suppose you have a table named…

To convert a date to an integer in PostgreSQL, you can use the TO_CHAR function to format the date as a string and then cast it to an integer. Here’s an example: SELECT CAST(TO_CHAR(your_date_column, ‘YYYYMMDD’) AS INTEGER) AS date_integer FROM your_table; where The TO_CHAR function is used to format the date as a string with…

To drop a column in PostgreSQL, you can use the ALTER TABLE statement with the DROP COLUMN clause. Here’s the basic syntax for dropping a column: ALTER TABLE table_name DROP COLUMN column_name; where table_name is the name of the table from which you want to drop the column, and column_name is the name of the…

A schema is a way to organize database objects, such as tables, views, functions, and more, into separate namespaces within a PostgreSQL database. Schemas help you group related objects together and avoid naming conflicts. Here’s how you can create a schema in PostgreSQL: CREATE SCHEMA schema_name; Replace schema_name with the name you want to give…

The log_rotation_size parameter determines the size at which PostgreSQL’s log files (usually the log file generated by the pg_log system) will be rotated or switched to a new file. Rotating log files helps postgresql database engine to manage the log file size and prevent them from growing too large, which can be particularly useful for…