-- DML (3 commands- Insert, Update, Delete). -- DQL/ DRL (1 command- select). -- TCL (3 commands- commit, rollback, savepoint) -- DCL (2 commands- Grant, Revoke ...

i need some help with a SQL alter command. i am trying to add a field to my table, but when i do the field is filled with null in any existing rows. how can i just make it fill blank like the value ...

When the Microsoft Access, dBASE, or Paradoxdriver is used, the ALTER TABLE statement is supported with add and drop table constraint definition clauses. (ALTER TABLE statements are not supported for ...