SELECT * FROM `us_school` as `S` LEFT JOIN `us_state` as `St` on `St`.`State_SN` = `S`.`State_SN` LEFT JOIN `us_area` as `A` on `A`.`Area_SN` = `St`.`State_SN` LEFT JOIN `us_city` as `C` on `C`.`State_SN` = `St`.`State_SN` LEFT JOIN `us_schoolcredit` as `CT` on `CT`.`School_SN` = `S`.`School_SN` LEFT JOIN `us_credit` as `Cr` on `Cr`.`Credit_SN` = `CT`.`Credit_SN` LEFT JOIN `us_schooltype` as `ST` on `ST`.`SchoolType_SN` = `S`.`SchoolType_SN` LEFT JOIN `us_schoolgroup` as `SG` on `SG`.`SchoolGroup_SN` = `S`.`SchoolGroup_SN` LEFT JOIN `us_price` as `P` on `P`.`Price_SN` = `C`.`Price_SN` WHERE `S`.`School_SN` = '215'

Not unique table/alias: 'ST'

Error Messages : SQL syntax error
Error Code : 1066