SELECT[ccode]FROM[GL_accsum]where not exists（SELECT*FROM[code]group by ccode having[ccode]=[GL_accsum].[ccode]） SELECT[ccode]FROM[GL_accsum]v where ccode not in（SELECTccodeFROM[code] where[ccode]=[v].[ccode]） select ccode from[GL_accsum]a left join code bon [ccode]=[b].[ccode] where ccode is null select ccode codes from[GL_accsum]a join code bon [ccode]=[b].[ccode] where ccode is null
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