![]() (Tested in PostgreSql v9.2) DO $$DECLARE r record ![]() I like this one since it modifies tables, views, sequences and functions owner of a certain schema in one go (in one sql statement), without creating a function and you can use it directly in PgAdmin III and psql: This generates all the required ALTER TABLE / ALTER SEQUENCE / ALTER VIEW statements, copy these and paste them back into plsql to run them.Ĭheck your work in psql by doing: \dt *.* Views SELECT 'ALTER VIEW '|| table_schema || '."' || table_name ||'" OWNER TO my_new_owner 'įROM information_schema.views WHERE NOT table_schema IN ('pg_catalog', 'information_schema')īased on this answer SELECT 'ALTER TABLE '|| oid::regclass::text ||' OWNER TO my_new_owner ' Sequences SELECT 'ALTER SEQUENCE '|| sequence_schema || '."' || sequence_name ||'" OWNER TO my_new_owner 'įROM information_quences WHERE NOT sequence_schema IN ('pg_catalog', 'information_schema') Tables SELECT 'ALTER TABLE '|| schemaname || '."' || tablename ||'" OWNER TO my_new_owner 'įROM pg_tables WHERE NOT schemaname IN ('pg_catalog', 'information_schema') This example ALTER TABLE will rename the order_details table to order_information.This: is also a nice and fast solution, and works for multiple schemas in one database: new_table_name – The new name of the table.Ĭonsider an example that shows how to rename a table to PostgreSQL using the ALTER TABLE operator.The syntax for renaming a table to PostgreSQL (using ALTER TABLE operator): This PostgreSQL example ALTER TABLE will rename the column with the name notes to order_notes in the order_details table. new_name – The new name for the column.Ĭonsider an example that shows how to rename a column in a PostgreSQL table using the ALTER TABLE operator.table_name – Name of the table to change.Syntax to rename the column in the table to PostgreSQL (using ALTER TABLE operator): This ALTER TABLE example will delete the column named notes from the table named order_details. column_name – Will eliminate the name of the table column.Ĭonsider an example that shows how to remove a column in a PostgreSQL table using the ALTER TABLE statement.Syntax to delete a column in a table in PostgreSQL (using ALTER TABLE operator): We will change the data type of the notes field to varchar (500) and change the quantity column’s data type to numeric. In this ALTER TABLE example, two columns of the order details table – notes and quantity – will be altered. column_definition – The changed type of column data.Ĭonsider an example that shows how to change multiple columns in a PostgreSQL table using the ALTER TABLE statement.column_name – The name of the table column has to be modified.Syntax to change multiple columns in a table in PostgreSQL (using ALTER TABLE):ĪLTER COLUMN column_name TYPE column_definition, This ALTER TABLE example will change the column named notes to varchar (500) data type in the order_details table. column_definition – The changed column data type.Ĭonsider an example that shows how to change a column in a PostgreSQL table using the ALTER TABLE statement.column_name – The name of the column to be changed in the table.table_name – The name of the table to change.Syntax to change the column in the table in PostgreSQL (using ALTER TABLE):ĪLTER COLUMN column_name TYPE column_definition The order date field will be a date data type column, whereas the quantity column will create as an integer data type column. This example will add two columns to the order_details table – order_date and quantity. Read more MongoDB profiler and database performance problem diagnosis and identification Feature article NPMD solutions play a key role in helping IT ops support increasingly complex technologies and services with network visibility, detection of performance issues and root cause analysis.The first of its kind, DPM provides decision support for each stage of the performance problem lifecycle DPM DPM is an innovative platform for IT production database performance management. ![]()
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