为什么80%的码农都做不了架构师？>>> 
SELECT * FROM b_c_s1 where CT_ID IN (SELECT DISTINCT CT_ID FROM b_c_s1 LIMIT 0,2);
（2）应该在只查询外面再加一个查询
SELECT * FROM b_c_s1 where CT_ID IN (SELECT a.CT_ID FROM (SELECT DISTINCT CT_ID FROM b_c_s1 LIMIT 0,2) a)
SELECT * FROM b_c_s1 where CT_ID IN (SELECT DISTINCT CT_ID FROM b_c_s1 LIMIT 0,2);
（2）应该在只查询外面再加一个查询
SELECT * FROM b_c_s1 where CT_ID IN (SELECT a.CT_ID FROM (SELECT DISTINCT CT_ID FROM b_c_s1 LIMIT 0,2) a)
转载于:https://my.oschina.net/clks/blog/179317
