String checkq="select * from "+Dbc.TB_COMPANY+" where cmp_name=? and cmp_id!=?";
pst=con.prepareStatement(checkq);
pst.setString(1,"test"); pst.setString(2,"2")
rs=st.executeQuery(checkq);
shows You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''13a'' and cmp_id!=3' at line 1
You're calling st.executeQuery
and passing in checkq
, which makes me think st
is a Statement
instance. The string in checkq
is not, of course, a valid SQL statement — it has PreparedStatement
placeholders in it. You should be calling executeQuery
on the PreparedStatement
instead (and not using a simple Statement
at all):
String checkq="select * from "+Dbc.TB_COMPANY+" where cmp_name=? and cmp_id!=?";
pst=con.prepareStatement(checkq);
pst.setString(1,"test");
pst.setString(2,"2")
// Not: rs=st.executeQuery(checkq);
rs = pst.executeQuery();
String checkq="select * from "+Dbc.TB_COMPANY+" where cmp_name=? and cmp_id!=?";
pst=con.prepareStatement(checkq);
pst.setString(1,"test"); pst.setString(2,"2")
rs=pst.executeQuery(checkq);
you are using both statement and prepareStatement
make sure to use prepareStatement
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