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Nz+ SELECT REFERRING.`z&`, REFERRING.`z ` FROM `z2` as REFERRING LEFT JOIN `zR` as REFERRED ON ( REFERRING.`z*` = REFERRED.`zE` ) WHERE REFERRING.`z4` IS NOT NULL AND REFERRED.`z"` IS NULL zThe row in table 'z' with primary key 'rz' has an invalid foreign key: .z contains a value 'rz.' that does not have a corresponding value in )r@ introspectionrget_primary_key_columnget_key_columnsrWfetchallr) rDrr@ table_nameprimary_key_column_name key_columns column_namereferenced_table_namereferenced_column_namebad_rows r;check_constraintsz!DatabaseWrapper.check_constraintssE[[]]( f""0<  +6  (>      $*??#4#4  ,999$+AJ99)99,799!( 99 5 99 6 999 '% ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( sCC<<DDc^ |jn#t$rYdSwxYwdS)NFT)rpingErrorrfs r; is_usablezDatabaseWrapper.is_usablesE  O " " " "   55 ts  **cdS)z Display name.MySQLrnrnr=r; display_namezDatabaseWrapper.display_names wr=c.|jjrdddd}|SiS)z= 0)rrr)r!supports_column_check_constraints)rDrs r;data_type_check_constraintsz+DatabaseWrapper.data_type_check_constraintss4 = : %+>(;-@!!  % $ r=c T|5}|d|}dddn #1swxYwY|d|d|dt|dt|dt|dd S) zReturn MySQL server data.a2 SELECT VERSION(), @@sql_mode, @@default_storage_engine, @@sql_auto_is_null, @@lower_case_table_names, CONVERT_TZ('2001-01-01 01:00:00', 'UTC', 'UTC') IS NOT NULL Nrr)versionsql_modedefault_storage_enginesql_auto_is_nulllower_case_table_nameshas_zoneinfo_database)temporary_connectionrWfetchonerv)rDr@rows r;mysql_server_dataz!DatabaseWrapper.mysql_server_data+s & & ( ( $F NN   //##C $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ 1vA&)!f $SV &*3q6ll%)#a&\\    *A  AAc|5}|d|dcdddS#1swxYwYdS)Return MySQL version.zSELECT VERSION()rN)r+rWr,rCs r;mysql_server_infoz!DatabaseWrapper.mysql_server_infoFs & & ( ( (F NN- . . .??$$Q' ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( (s/AAA.c|}tjjdi|5}|}dddn #1swxYwY|S)r1Nrn)rrXrYrget_server_version)rDconfigconnserver_versions r; mysql_versionzDatabaseWrapper.mysql_versionMs++-- _ $ . .v . . 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