Question : I’m new to Oracle. I need to port a SQL Server command to Oracle. I want to alter […]
Tag: default-value
Calculated Field Updating Every Row
Question : I added a calculated field to my table, and only want to update NULL rows (or “new” rows). […]
Assign value to a field after checking a condition
Question : I have this query: ALTER TABLE MERCHANTS ADD COLUMN merchant_image bytea, ADD COLUMN merchant_logo bytea, ADD COLUMN merchant_address […]
Assign value to a field after checking a condition
Question : I have this query: ALTER TABLE MERCHANTS ADD COLUMN merchant_image bytea, ADD COLUMN merchant_logo bytea, ADD COLUMN merchant_address […]
alter table (mysql) adding column with default value of space (‘ ‘)
Question : On my Mac, using 5.5.11 MySQL Community Server (GPL) alter table foobaz add column ( extendedTitle varchar(3000) DEFAULT […]
Default value for UUID column in Postgres
Question : In Postgres 9.x, for a column of type UUID, how do I specify a UUID to be generated […]
Is DEFAULT NULL and ‘nullable value without default’ completely the same?
Question : ALTER TABLE test_table ADD COLUMN a DEFAULT NULL; vs. ALTER TABLE test_table ADD COLUMN a; Both columns will […]
PostgreSQL, what is the hostname address of my default database?
Question : I just created a PostgreSQL database on my laptop (following these instructions), which is running Linux CentOS 7. […]
Confused on how a value gets added with the DEFAULT constraint
Question : A recent definition I’ve read about Default Constraints: DEFAULT is specified for a column to assign a column […]
How do I an add a DEFAULT on a column if the table already exists?
Question : I want to add a DEFAULT for a timestamp column in PostgreSQL. With SQL Server you use ALTER […]