WebExample 1: postgresql change column type ALTER TABLE assets ALTER COLUMN name TYPE VARCHAR; Example 2: how to change column type psql ALTER TABLE table_name ALTER COLUMN column_name [SET DATA] TYPE new_data_type; Tags: Sql Example. Related. http://docs-cn.greenplum.org/v5/ref_guide/sql_commands/ALTER_TABLE.html
ALTER TABLE Greenplum数据库文档
WebApr 8, 2024 · ALTER TABLE data_copy1 ADD COLUMN data2 jsonb; UPDATE data_copy1 set data2= to_json (data) where LEFT (data, 1)= 'p' or LEFT (data, 1)= ' {'; UPDATE data_copy1 set data2= to_json (data::numeric) where LEFT (data, 1)!= 'p' and LEFT (data, 1)!= ' {'; ALTER TABLE data_copy1 DROP COLUMN data; ALTER TABLE data_copy1 … WebMay 25, 2012 · ALTER TABLE glass_fill ALTER COLUMN id TYPE INTEGER USING CAST (id AS INT); Now, it says: django.db.utils.DatabaseError: foreign key constraint "glass_fill_manufacturer_glass_fill_id_fkey" cannot be implemented DETAIL: Key columns "glass_fill_id" and "id" are of incompatible types: integer and character varying. Any Ideas? chirajeet sengupta everest
PostgreSQL: Documentation: 15: ALTER TYPE
WebJul 2, 2024 · Alter a table column based on type. I am converting "timestamps without timezone" columns to "timestamps with timezone" on a number of tables. These are … WebMay 10, 2013 · A column of serial (pseudo)type is just an integer column that has as default value the value of some sequence (and increments it). I addded the statement to set the value. – leonbloy May 10, 2013 at 3:46 Add a comment Your Answer By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy WebMar 7, 2024 · I have table in production which has column type character varying (255); All rows has entry in that column no longer than 15 characters and never will be larger as well. I decide to reduce its size to 15 characters with following command which I found on sof: ALTER TABLE user_template ALTER COLUMN "TYPE" character varying (15); I got … chirai shrine tree location