我们使用 VB.net 对数据读取器(7 条记录)执行 mySQL 语句,然后通过下面的代码加载到数据表(新创建的 6 条记录?) - 当涉及数据表时,第一条记录似乎潜逃 - 我无法理解为什么 - 你智慧最受赞赏。
SQL = "SELECT Count(total) as 'Inv #', CONCAT(DATE_FORMAT(DATE, '%m'), '/', DATE_FORMAT(DATE, '%Y')) AS Month, SUM(total) AS 'Total' FROM (tblinvoices) GROUP BY DATE_FORMAT(DATE, '%m%Y') ORDER BY Month DESC"
Try
myCommand.Connection = MysqlConn
myCommand.CommandText = SQL
myAdapter.SelectCommand = myCommand
myData = myCommand.ExecuteReader()
myData.Read() <- perfect 7 records
Catch ex As MySqlException
MsgBox(ex.Number & ", " & ex.Message)
Finally
Dim MyInvoiced As New DataTable
MyInvoiced.Load(myData) <- 6 records???