选择多个表时出错

Question

SELECT pc_info_tbl.`serial_id` "Serial Number",
       pc_info_tbl.`replacement_warranty_date` "Replacement Warranty",
       pc_info_tbl.`service_warranty_date` "Service Warranty",
       personel_tbl.`fname` "First Name",
       personel_tbl.`mname` "Middle Name",
       personel_tbl.`lname` "Last Name",
       repair_records_tbl.`repair_date` "Repair Date",
       repair_records_tbl.`service_slip_no` "Service Slip Number",
       repair_records_tbl.`itmd_personel_id` "ITMD Personnel",
       repair_records_tbl.`notes` "Notes"
  FROM repair_records_tbl,
       itmd_personel_tbl,
       pc_info_tbl,
       personel_tbl
 WHERE repair_records_tbl.`personel_id` = personel_tbl.`personel_id`,
       repair_records_tbl.`serial_id` = pc_info_tbl.`serial_id`,
       repair_records_tbl.`itmd_personel_id` = itmd_personel_tbl.`itmd_personel_id`;

我想选择多个表格，但是我在repair_records_tbl.`serial_id` = pc_info_tbl.`serial_id`, repair_records_tbl.`i

上遇到了错误

错误代码：1064     您的SQL语法有错误;查看与您的MySQL服务器版本相对应的手册，以便在'repair_records_tbl。serial_id = pc_info_tbl。serial_id附近使用正确的语法，在第5行修复repair_records_tbl .i'

任何人都可以教我正确的语法吗？

Answer 1

您的where子句有语法错误。您可能想要使用AND

更改：

WHERE repair_records_tbl.`personel_id` = personel_tbl.`personel_id`, 
      repair_records_tbl.`serial_id` = pc_info_tbl.`serial_id`, 
      repair_records_tbl.`itmd_personel_id` = itmd_personel_tbl.`itmd_personel_id`;

以：

WHERE 
      repair_records_tbl.`personel_id` = personel_tbl.`personel_id`
  and repair_records_tbl.`serial_id` = pc_info_tbl.`serial_id`
  and repair_records_tbl.`itmd_personel_id` = itmd_personel_tbl.`itmd_personel_id`;

Answer 2

您可以在使用逗号进行选择时分隔列名，但在clauses之间使用AND / OR，而不是用逗号分隔：

SELECT pc_info_tbl.`serial_id` "Serial Number", pc_info_tbl.`replacement_warranty_date` "Replacement Warranty", pc_info_tbl.`service_warranty_date` "Service Warranty", personel_tbl.`fname` "First Name", personel_tbl.`mname` "Middle Name", personel_tbl.`lname` "Last Name", repair_records_tbl.`repair_date` "Repair Date", repair_records_tbl.`service_slip_no` "Service Slip Number", repair_records_tbl.`itmd_personel_id` "ITMD Personnel", repair_records_tbl.`notes` "Notes" 
FROM repair_records_tbl, itmd_personel_tbl, pc_info_tbl, personel_tbl 
WHERE repair_records_tbl.`personel_id` = personel_tbl.`personel_id`
AND repair_records_tbl.`serial_id` = pc_info_tbl.`serial_id`
AND repair_records_tbl.`itmd_personel_id` = itmd_personel_tbl.`itmd_personel_id`;