Deil may Cry

摘要： --建立測試環境Create Table A(ID Int,fatherID Int,NameVarchar(10))Insert A Select 1, NULL, 'tt'Union All Select 2, 1, 'aa'Union All Select 3, 1, 'bb'Union All Select 4, 2, 'cc'Union All Select 5, 2, 'gg'Unio... 阅读全文