小宋的专栏

1, how to selectassume the table CAS.dbo._Test have a field AuthTime with the type datetime, We may use following SQL to select all the records in 2009-04-06. SELECT *FROM CAS.dbo._TestWHE

With ADO it’s easy to append some common data type in to a field, such as char, int, short, string, double and so on. Just use the following sentences:rs->Fields->Item[2]->Value = "value";rs->Fiel

1.      Why don’t use “select * ” a)      when a new culume isinserted into the DB, the current program may not work.b)      The “query optimizer” maynot work. 2.      chara)      char的数