How Oracle Remove NOT NULL Constraint
Before we talk about how to remove NOT NULL constraint, I assume that you have already know how to add a NOT NULL constraint to… Read More »How Oracle Remove NOT NULL Constraint
inline_constraint
How to Resolve ORA-00904 Invalid Identifier
ORA-00904 ORA-00904 means that you used an invalid identifier to be a column name, which is most likely unmatched in name or incorrect syntax. Since… Read More »How to Resolve ORA-00904 Invalid Identifier