dax 计算某一列重复出现次数

关键字数 = 
VAR KeyWord = "jpg"
VAR TextLine = [内容]

-- 执行：

VAR KeyWordLen = LEN( KeyWord )
VAR Positions = GENERATESERIES( 1 , LEN( TextLine ) , 1 )
VAR Result = ADDCOLUMNS( Positions , "IsFound" , MID( TextLine , [Value] , KeyWordLen ) = KeyWord )
RETURN COUNTROWS( FILTER( Result , [IsFound] ) )