Using AND for SELECT in MSAccess

Question

Hi,
Anybody help me how to write SQL query using AND for MSAccess.
When I am using the following query, It gives the error "Datatype mismatch in criteria expression". The field names in database are correct.
String query="select [id] from Suppliers where (([name]='"+name1+"') AND ([street]='"+street1+"') AND ([zipcode]='"+zipcode1+"'));";
How to write???
Thanks in advance,
Sai Ram

Answer 1

Hi,
Anybody help me how to write SQL query using AND for
MSAccess.
When I am using the following query, It gives the
error "Datatype mismatch in criteria expression". The
field names in database are correct.
String query="select [id] from Suppliers where
(([name]='"+name1+"') AND ([street]='"+street1+"') AND
([zipcode]='"+zipcode1+"'));";
How to write???
Thanks in advance,
Sai RamThe error message leads me to believe that there's a mismatch between the column type and the query (even if the field names are correct). The way you've written them all the columns in the WHERE clause should be of Java type String and SQL type text/varchar.
I'd recommend that you remove those square brackets from around the column names - I don't believe those are standard SQL. They're a M$ extension.
I'd also recommend that you use PreparedStatement instead of Statement. You can use the setString/setDate methods to do the escaping properly for you and not worry about putting quotes around String values. (setString will even work when there's a field value with an apostrophe in it.)