wikimedia / mediawiki

	 * @param string $table

	 * @return array

	 */

	private function getBinaryColumns( $table ) {

		$tableRawArr = explode( '.', preg_replace( '#\[([^\]]*)\]#', '$1', $table ) );

		$tableRaw = array_pop( $tableRawArr );

		if ( $this->mBinaryColumnCache === null ) {

			$this->populateColumnCaches();

		}

		return isset( $this->mBinaryColumnCache[$tableRaw] )

			? $this->mBinaryColumnCache[$tableRaw]

			: [];

	}

	/**

	 * @param string $table

	 * @param string $table

	 * @return array

	 */

	private function getBitColumns( $table ) {

		$tableRawArr = explode( '.', preg_replace( '#\[([^\]]*)\]#', '$1', $table ) );

		$tableRaw = array_pop( $tableRawArr );

		if ( $this->mBitColumnCache === null ) {

			$this->populateColumnCaches();

		}

		return isset( $this->mBitColumnCache[$tableRaw] )

			? $this->mBitColumnCache[$tableRaw]

			: [];

	}

	private function populateColumnCaches() {

		$res = $this->select( 'INFORMATION_SCHEMA.COLUMNS', '*',