DECLARE — define a cursor
DECLAREcursor_name[ BINARY ] [ ASENSITIVE | INSENSITIVE ] [ [ NO ] SCROLL ] CURSOR [ { WITH | WITHOUT } HOLD ] FORprepared_nameDECLAREcursor_name[ BINARY ] [ ASENSITIVE | INSENSITIVE ] [ [ NO ] SCROLL ] CURSOR [ { WITH | WITHOUT } HOLD ] FORquery
     DECLARE declares a cursor for iterating over
     the result set of a prepared statement.  This command has
     slightly different semantics from the direct SQL
     command DECLARE: Whereas the latter executes a
     query and prepares the result set for retrieval, this embedded
     SQL command merely declares a name as a “loop
     variable” for iterating over the result set of a query;
     the actual execution happens when the cursor is opened with
     the OPEN command.
    
Examples declaring a cursor for a query:
EXEC SQL DECLARE C CURSOR FOR SELECT * FROM My_Table; EXEC SQL DECLARE C CURSOR FOR SELECT Item1 FROM T; EXEC SQL DECLARE cur1 CURSOR FOR SELECT version();
An example declaring a cursor for a prepared statement:
EXEC SQL PREPARE stmt1 AS SELECT version(); EXEC SQL DECLARE cur1 CURSOR FOR stmt1;
     DECLARE is specified in the SQL standard.