ecpg "problem" ...

Marc,

Marc G. Fournier writes:
> if (ic_flag == 1) {
> /*only select those non-IC/Spyder nodes that has full update set*/
> EXEC SQL DECLARE full_dyn_node CURSOR FOR
> SELECT node_name FROM NODE
> WHERE dynamic_community = 'f' AND ic_flag='n' AND machine_type!=22
> AND node_id != 0 AND NODE_NAME != :nodename;
> }
> else{
> EXEC SQL DECLARE full_dyn_node CURSOR FOR
> SELECT node_name FROM NODE
> WHERE dynamic_community = 'f'
> AND node_id != 0 AND NODE_NAME != :nodename; (line#493)
> }
>
> the above code generates the following error:
>
> The compiler complains:
> ../subapi.pgc:493: ERROR: cursor full_dyn_node already defined
>
> since its envelop'd in an if/else clause, shouldn't it work?

Unfortuantely no, you can only ever have one "EXEC SQL DECLARE" for a
given cursor name due to ecpg/ESQL simple parsing. What you would do
in a situation like this is something like:

if( ic_flag == 1 )
/* only select those non-IC/Spyder nodes that has full update set */
sprintf(stmt, "SELECT node_name FROM NODE WHERE dynamic_community = 'f' AND ic_flag = 'n' AND machine_type != 22 AND node_id != 0 AND NODE_NAME != %s", nodename);
else
sprintf(stmt, "SELECT node_name FROM NODE WHERE dynamic_community = 'f' AND node_id != 0 AND NODE_NAME != %s", nodename);

EXEC SQL PREPARE s_statement FROM :stmt;
EXEC SQL DECLARE full_dyn_node CURSOR FOR s_statement;

Regards, Lee.