Postgresql alter table only11/9/2023 ![]() ![]() In PostgreSQL, if someone tries to drop a column that does not exist, then an error will occur: ALTER TABLE student_details The above snippet shows that the “student_age” column has been dropped successfully.Įxample# 2: Drop a Column That Does Not Exist Let’s refresh the targeted table and then click on the “Columns” section to see the available columns in the selected table: To do so, execute the following command: ALTER TABLE student_details Let’s say you have to drop the “student_age” column. Select a column that you want to drop from the targeted table: Let’s follow the below-given guidelines to get a profound understanding of the DROP COLUMN command.įrom the available tables, we select the “student_details” table. ![]() Įxample# 1: How to Drop/delete a Single Column in Postgres? The DROP COLUMN is a command, and col_name represents a column to be dropped. Here, ALTER TABLE is a command, and tbl_name represents a table to be modified. ![]() The syntax given below is used to drop a single column from a table in PostgreSQL: ALTER TABLE tbl_name How to Drop/Delete a Single Column from a Table in PostgreSQL? In PostgreSQL, some options like “CASCADE” and “IF NOT EXISTS” can be used with the DROP COLUMN command to achieve different functionalities. The DROP COLUMN statement in PostgreSQL is used with the collaboration of the ALTER TABLE command. In PostgreSQL, the DROP COLUMN command is used to drop an individual column or multiple columns. ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |