update tb_yhjgsbyhjgsb set SBJG= ( select avg(SBJG) from tb_yhjgsbyhjgsb where DRRQ="2016-08-11" and CMID="fe07324e39b24e85a54988dbde6b30cb" and CSCID="e57ffda03de54764ad2a111d14801dcc") where DRRQ="2016-08-11" and CMID="fe07324e39b24e85a54988dbde6b30cb" and CSCID="e57ffda03de54764ad2a111d14801dcc"
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