IntermediateBasic SELECT
Constraint Practice: Add CHECK constraint variant #7
The query
SQL
ALTER TABLE practice_table_7
ADD CONSTRAINT chk_data_7 CHECK (LENGTH(data_value) > 3);Note
“Ensuring data integrity through check constraints (Pattern #7).
ALTER TABLE practice_table_7
ADD CONSTRAINT chk_data_7 CHECK (LENGTH(data_value) > 3);Note
“Ensuring data integrity through check constraints (Pattern #7).