几乎每一种 SQL 方言中的更新语句都不允许使用多个 SET 命令,而只允许一个包含多个用逗号分隔的表达式的命令。考虑这样做并根据数据类型用引号 (strings)、井号 (dates) 或空字符 (integer) 正确括起来:
CurrentDb.Execute "UPDATE WORKED_HOURS " _
& " SET EMPLOYEE_ID=" & Me.cboEmployeeID _
& " , FIRST_NAME='" & Me.FIRST_NAME & "'" _
& " , LAST_NAME='" & Me.LAST_NAME & "'" _
& " , WORK_ORDER_NO='" & Me.cboWorkOrderNo & "'" _
& " , PROJECT_TITLE='" & Me.txtProjectTitle & "'" _
& " , WORKED_DATE=#" & Me.txtWorkedDate & "#" _
& " , TIME_STARTED=#" & Me.txtTimeStarted & "#" _
& " , TIME_FINISHED=#" & Me.txtTimeFinished & "#" _
& " , WEEK_ENDING=#" & Me.txtWeekEnding & "#" _
& " WHERE EMPLOYEE_ID=" & Me.cboEmployeeID.Tag
但为了获得最佳实践,请考虑使用参数化的 querydef,它甚至可以避免所需的引号或井号。 Jet/ACE SQL 允许使用PARAMETERS 子句声明参数。
Dim qdef As querydef
strSQL = "PARAMETERS [EMPLOYEE_ID] Integer, [FIRST_NAME] Text(255)," _
& " [LAST_NAME] Text(255), [WORK_ORDER_NO] Text(255)," _
& " [PROJECT_TITLE] Text(255), [WORKED_DATE] Datetime," _
& " [TIME_STARTED] Datetime, [TIME_FINISHED] Datetime," _
& " [WEEK_ENDING] Datetime;"
& " UPDATE WORKED_HOURS " _
& " SET EMPLOYEE_ID = [EMPLOYEE_ID]" _
& " , FIRST_NAME = [FIRST_NAME]" _
& " , LAST_NAME = [LAST_NAME] " _
& " , WORK_ORDER_NO = [WORK_ORDER_NO] " _
& " , PROJECT_TITLE = [PROJECT_TITLE]" _
& " , WORKED_DATE = [WORKED_DATE]" _
& " , TIME_STARTED = [TIME_STARTED]" _
& " , TIME_FINISHED = [TIME_FINISHED]" _
& " , WEEK_ENDING = [WEEK_ENDING]" _
& " WHERE EMPLOYEE_ID = [EMPLOYEE_ID]"
Set qdef = Currentdb.CreateQueryDef("", strSQL)
qdef!EMPLOYEE_ID = Me.cboEmployeeID
qdef!FIRST_NAME = Me.FIRST_NAME
qdef!LAST_NAME = Me.LAST_NAME
qdef!WORK_ORDER_NO = Me.cboWorkOrderNo
qdef!PROJECT_TITLE = Me.txtProjectTitle
qdef!WORKED_DATE = Me.txtWorkedDate
qdef!TIME_STARTED = Me.txtTimeStarted
qdef!TIME_FINISHED = Me.txtTimeFinished
qdef!WEEK_ENDING = Me.txtWeekEnding
qdef.Execute
Set qdef = Nothing