mysql - 這條聯合sql語句哪里錯了

問題描述

((( SELECT a.log_id,`create_date`,`content`,`creator`,`belong_to_user`,a.customer_code,`follow_up_way` FROM gs_log a left join gs_customer b on a.customer_code = b.customer_code WHERE ( b.customer_code != ’’ AND b.customer_id = 2212 ) )) union (( SELECT a.log_id,`create_date`,`content`,`creator`,`belong_to_user`,`customer_code`,`follow_up_way` FROM gs_log a left join gs_r_customer_log on a.log_id = gs_r_customer_log.log_id WHERE ( gs_r_customer_log.customer_id= 2212 ) ))) limit 0,10

這條語句哪里錯了，半天沒找到，錯誤提示

[SQL]((( SELECT a.log_id,`create_date`,`content`,`creator`,`belong_to_user`,a.customer_code,`follow_up_way` FROM gs_log a left join gs_customer b on a.customer_code = b.customer_code WHERE ( b.customer_code != ’’ AND b.customer_id = 2212 ) )) union (( SELECT a.log_id,`create_date`,`content`,`creator`,`belong_to_user`,`customer_code`,`follow_up_way` FROM gs_log a left join gs_r_customer_log on a.log_id = gs_r_customer_log.log_id WHERE ( gs_r_customer_log.customer_id= 2212 ) ))) limit 0,10[Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ’union (( SELECT a.log_id,`create_date`,`content`,`creator`,`belong_to_user`,`cus’ at line 3

問題解答

你括號加太多了，相當于最外面那層是(...) limit 0,10,只能是(...) union (...) limit 0,10

(( SELECT a.log_id,`create_date`,`content`,`creator`,`belong_to_user`,a.customer_code,`follow_up_way` FROM gs_log a left join gs_customer b on a.customer_code = b.customer_code WHERE ( b.customer_code != ’’ AND b.customer_id = 2212 ) )) union (( SELECT a.log_id,`create_date`,`content`,`creator`,`belong_to_user`,`customer_code`,`follow_up_way` FROM gs_log a left join gs_r_customer_log on a.log_id = gs_r_customer_log.log_id WHERE ( gs_r_customer_log.customer_id= 2212 ) )) limit 0,10回答2：

a.log_id

建議分步排查。

不知道誰選的答案沒幫助？分步排查的意思是將大的SQL語句拆分為多個小SQL語句排查。估計是他沒有領悟到。