information_schema.referential_constraints.match_option

Note:

Always NONE.

Note:

Always NONE.

Note:

Match option of the foreign key constraint: FULL, PARTIAL, or NONE.

Note:

Match option of the foreign key constraint: FULL, PARTIAL, or NONE.

Note:

Match option of the foreign key constraint: FULL, PARTIAL, or NONE.

Note:

Referential constraint-matching conditions. Always returns SIMPLE. This means that no match is defined. The condition is considered a match when one of the following is true: At least one value in the foreign key column is NULL. All values in the foreign key column are not NULL, and there is a row in the primary key table that has the same key.