Select isnull(BZ,'零') from XT_GCXTBM_MX where GCXTBM='110'得不到零呢
Select isnull(BZ,0)fromXT_GCXTBM_MXwhere GCXTBM110得不到零呢？Select isnull(BZ,0)fromXT_GCXTB
Select isnull(BZ,'0') from XT_GCXTBM_MX where GCXTBM='110'得不到零呢？
Select isnull(BZ,'0') from XT_GCXTBM_MX where GCXTBM='110'
当BZ这个值为空时，输出零。但为什么得不到零呢？
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