Assertion: table's column | /r/HasProperty | nullable
Facets:
Source sentences:
text: For this constraint to execute, the foreign key columns must be nullable.
text: If a column is nullable, and there is no explicit default value set, NULL becomes the implicit default value of the column.
text: For this constraint to execute, the foreign key columns must be nullable.
text: If a column is nullable, and there is no explicit default value set, NULL becomes the implicit default value of the column.
text: For this constraint to execute, the foreign key columns must be nullable.
text: If a column is nullable and there is no explicit default value set, NULL becomes the implicit default value of the column.
text: For this constraint to execute, the foreign key columns must be nullable.
text: If a column is nullable, and there is no explicit default value set, NULL becomes the implicit default value of the column.