如果没有序号列,那么如果领灯表里有3条数据,还灯表里面有2条数据,full join后就是3*2=6条数据 --1.领灯表,每天每班每人允许重复数据 select ID ,ROW_NUMBER() over(partition by PersonID,classid,dt_ClassData order by id) as getnum ,[PersonID] ,[ClassID] ,[dt_GetTime] ,[dt_ClassData] from m_LampHistoryDataGet a
新建一个 dataframe : val conf = new SparkConf().setAppName("TTyb").setMaster("local") val sc = new SparkContext(conf) val spark = new SQLContext(sc) val dataFrame = spark.createDataFrame(Seq( (1, 1, "2", "5"), (2, 2, &q
var IsHave:Boolean; begin adoquery.first; while(not adoquery.eof) do begin if(adoquery.fieldbyname('列名').asstring="用户添加的值") then begin IsHave=True; break; end; adoquery.next; end; if(IsHave)then showmessage("存在重复数据!"); end;
Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules. The Sudoku board could be partially filled, where empty cells are filled with the character '.'. A partially filled sudoku which is valid. Note:A valid Sudoku board (partially