Sql adodb查询的VBscript

我需要在我们的计费系统中添加几行，但我对这个呼叫的语法了解不够。有人能告诉我这个查询第一行的零是什么意思吗

  strSqlStmt = strSqlStmt & "SELECT Trim(users.PILastName & ' ' & users.PIFirstName), 0, 0, 0, 0, Count(plab.billing), 0, 0, 0 " 
  strSqlStmt = strSqlStmt & "FROM plab, pform, users, userinfo "
  strSqlStmt = strSqlStmt & "WHERE userinfo.PI=users.PI "
  strSqlStmt = strSqlStmt & " AND UCase(users.location) ='S' "
  strSqlStmt = strSqlStmt & " AND plab.sampleid=pform.sampleid " 
  strSqlStmt = strSqlStmt & " AND plab.email=userinfo.email " 
  strSqlStmt = strSqlStmt & " AND plab.finisheddate Between " & dtmRange & " "
  strSqlStmt = strSqlStmt & " AND plab.finished=True "
  strSqlStmt = strSqlStmt & " AND plab.billing = 1 "
  strSqlStmt = strSqlStmt & "GROUP BY Trim(users.PILastName & ' ' & users.PIFirstName) " 

它只是静态（常量）值

0

返回在

SELECT

语句中指定的位置（列）

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下面是一个示例

这些只是常量，将作为查询的一部分作为列值输出。+1是很好的解释和示例。