SQL_NEED_DATA以简单整数返回

Question

ALL,

I am having a weird situation. I modified one of my queries adding the 3rd parameter of type int and now trying to bind the integer value to it. The call is as follows:

ret = SQLBindParameter( stmt_tableProp, 3, SQL_PARAM_INPUT, SQL_C_SLONG, SQL_INTEGER, 0, 0, &tableId, 0, &cbId );

The value of the tableId is 171147655 .

After adding this function the call to SQLExecute() starts returning SQL_NEED_DATA.

In the table the column is of the type integer .

I don't understand this - I am not passing big data to the query and I am not using BLOB.

Why am I getting the SQL_NEED_DATA?

If I take the 3 parameter out everything works again.

Could someone please help?

TIA!

Answer 1

This behaviour occurs if the last parameter of the SQLBindParameter function ( StrLen_or_IndPtr ) is set to SQL_DATA_AT_EXEC .

You should check the value of your cbId variable.

The error also seems to occur if you do not initialize the provided variable.