Ignore additional useless parameters at execute statement ---------------------------------------------------------
Key: CORE-4736 URL: http://tracker.firebirdsql.org/browse/CORE-4736 Project: Firebird Core Issue Type: Improvement Reporter: Omacht AndrĂ¡s Priority: Minor It would be easier to create and mantain dynamic (build up with changing parameters) execute statements if the engine ignores the actually useless paramteres. Example: select * from people_by_gender_and_age('F', 16, 30) -- works fine select * from people_by_gender_and_age(null, 16, 30) -- dies with error: "input parameter mismatch' - also this should work too Business logic: CREATE TABLE PEOPLE ( GENDER VARCHAR(1) NOT NULL, AGE INTEGER NOT NULL ); commit; INSERT INTO PEOPLE (GENDER, AGE) VALUES ('F', 15); INSERT INTO PEOPLE (GENDER, AGE) VALUES ('F', 20); INSERT INTO PEOPLE (GENDER, AGE) VALUES ('M', 17); INSERT INTO PEOPLE (GENDER, AGE) VALUES ('M', 19); commit; create or alter procedure people_by_gender_and_age ( filter_gender type of column people.gender, filter_min_age type of column people.age, filter_max_age type of column people.age) returns (gender type of column people.gender, age type of column people.age) as begin filter_min_age = coalesce(filter_min_age, 0); filter_max_age = coalesce(filter_max_age, 200); for execute statement ('select gender, age from people where age between :filter_min_age and :filter_max_age ' || -- Here is the dynamic part iif(:filter_gender in ('F', 'M'), ' and gender = :filter_gender', '')) (filter_gender := :filter_gender, -- sometimes this parameter is useless depends on the dynamic part filter_min_age := :filter_min_age, filter_max_age := :filter_max_age) into :gender, :age do begin suspend; end end Thanks! -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://tracker.firebirdsql.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel