NOT NULL « Constraints « Oracle PL / SQL

Oracle PL / SQL

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Oracle PL / SQL » Constraints » NOT NULL

1.	NOT NULL Column Constraints
2.	Change a column to 'not null' with null data in it
3.	NOT NULL CONSTRAINT
4.	Adding constraint that checks values and prohobits nulls
5.	Create a SQL collection type that disallows null values
6.	ORA-01400: cannot insert NULL into
7.	Add not null constraint to different columns
8.	alter table dept modify emp_count NOT NULL

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