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数据库错误: [Unknown column ''' in 'where clause']
select * from `doc_product` where `channelid` in (4) or instr(replace(concat("'",categoryid,"'"),",","','"),"'4'")>0

数据库错误: [Unknown column ''' in 'where clause']
SELECT * FROM `doc_product` WHERE `channelId` IN (4) OR INSTR(REPLACE(CONCAT("'",categoryId,"'"),",","','"),"'4'")>0 ORDER BY ordering DESC,id DESC LIMIT 0,6