${if(len(lx)==0,"","AND B.PROBLEM_SOURCE IN ('"+lx+"')")}
${if(len(lx)==0,"","AND B.PROBLEM_SOURCE IN ('"+replace(lx,",","','")+"')")}
${if(len(lx)==0,"","AND B.PROBLEM_SOURCE IN ('"+REPLACE(lx,",","','")+"')")}
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试一下