PostgreSQLprovides aRENAME COLUMNclause that is used with the collaboration ofALTER TABLEcommand to rename a column. TheRENAME COLUMNcommand allows us to rename a single or multiple columns.PostgreSQLdoesn’t provide the“IF EXISTS”option for the“RENAME COLUMN”command. This write-up will explain ...
Once the connection is established, you can run the“ALTER DATABASE”command with the collaboration of the“RENAME TO”clause from that particular database to rename the targeted database. This blog post will explain how to rename a database in PostgreSQL using the following context: How to R...
You can rename a table in PostgreSQL by using the ‘ALTER TABLE’ command as follows: ALTER TABLE tablename RENAME TO preferredtablename; If the table name has odd characters in it, then a syntax error might be generated which can be solved by placing the table name in double quotes: ...
To remove the column we just created, enter this command: ALTER TABLE pg_equipment DROP COLUMN working_order; We can rename the entire table with this command: ALTER TABLE pg_equipment RENAME TO playground_equip; Deleting Tables in PostgreSQL We can delete the table we created by ...
To rename a database in PostgreSQL, you can use theALTER DATABASEstatement followed by theRENAME TOclause. For example, to rename a table from "old_name" to "new_name", execute: Copy 1ALTER TABLEold_nameRENAME TOnew_name; Does pg_terminate_backend() drop connections together or one by...
4. Retrieve Column Names in PostgreSQL In this section, we check out various methods for retrieving column names from a table in PostgreSQL. 4.1. Using the INFORMATION_SCHEMA View To begin with,the INFORMATION_SCHEMA view provides metadata about the columns of all tables. By querying this view...
(If this would conflict with a qualified column name, again the column name wins. You can avoid the ambiguity by choosing a different alias for the table within the SQL command.) If you rename the function, change the VALUES references to match the new name. Remove th...
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A running PostgreSQL instance in which you have proper access to the database you want to migrate. (I’ll call this database from now on thesource database). I have a PostgreSQL instance running in a computer (an Ubuntu 12.04 box) in my local network. I have installe...
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