node-pg-migrate/dist/legacy/operations/tables/dropConstraint.js

PostgreSQL database migration management tool for node.js

function dropConstraint(mOptions) {
  const _drop = (tableName, constraintName, options = {}) => {
    const { ifExists = false, cascade = false } = options;
    const ifExistsStr = ifExists ? " IF EXISTS" : "";
    const cascadeStr = cascade ? " CASCADE" : "";
    const tableNameStr = mOptions.literal(tableName);
    const constraintNameStr = mOptions.literal(constraintName);
    return `ALTER TABLE ${tableNameStr} DROP CONSTRAINT${ifExistsStr} ${constraintNameStr}${cascadeStr};`;
  };
  return _drop;
}
export {
  dropConstraint
};