mysql - 這條聯(lián)合sql語(yǔ)句哪里錯(cuò)了
問(wèn)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(yǔ)句哪里錯(cuò)了，半天沒(méi)找到，錯(cuò)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(wèn)題解答
回答1：你括號(hào)加太多了，相當(dāng)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
回答3：建議分步排查。
不知道誰(shuí)選的答案沒(méi)幫助？分步排查的意思是將大的SQL語(yǔ)句拆分為多個(gè)小SQL語(yǔ)句排查。估計(jì)是他沒(méi)有領(lǐng)悟到。
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