drop table if exists t1; CREATE FUNCTION metaphon RETURNS STRING SONAME "UDF_EXAMPLE_LIB"; CREATE FUNCTION myfunc_double RETURNS REAL SONAME "UDF_EXAMPLE_LIB"; CREATE FUNCTION myfunc_nonexist RETURNS INTEGER SONAME "UDF_EXAMPLE_LIB"; ERROR HY000: Can't find function 'myfunc_nonexist' in library CREATE FUNCTION myfunc_int RETURNS INTEGER SONAME "UDF_EXAMPLE_LIB"; CREATE FUNCTION sequence RETURNS INTEGER SONAME "UDF_EXAMPLE_LIB"; CREATE FUNCTION lookup RETURNS STRING SONAME "UDF_EXAMPLE_LIB"; CREATE FUNCTION reverse_lookup RETURNS STRING SONAME "UDF_EXAMPLE_LIB"; CREATE AGGREGATE FUNCTION avgcost RETURNS REAL SONAME "UDF_EXAMPLE_LIB"; select myfunc_double(); ERROR HY000: myfunc_double must have at least one argument select myfunc_double(1); myfunc_double(1) 49.00 select myfunc_double(78654); myfunc_double(78654) 54.00 select myfunc_nonexist(); ERROR 42000: FUNCTION test.myfunc_nonexist does not exist select myfunc_int(); myfunc_int() 0 select lookup(); ERROR HY000: Wrong arguments to lookup; Use the source select lookup("127.0.0.1"); lookup("127.0.0.1") 127.0.0.1 select lookup(127,0,0,1); ERROR HY000: Wrong arguments to lookup; Use the source select lookup("localhost"); lookup("localhost") 127.0.0.1 select reverse_lookup(); ERROR HY000: Wrong number of arguments to reverse_lookup; Use the source select reverse_lookup("127.0.0.1"); select reverse_lookup(127,0,0,1); select reverse_lookup("localhost"); reverse_lookup("localhost") NULL select avgcost(); ERROR HY000: wrong number of arguments: AVGCOST() requires two arguments select avgcost(100,23.76); ERROR HY000: wrong argument type: AVGCOST() requires an INT and a REAL create table t1(sum int, price float(24)); insert into t1 values(100, 50.00), (100, 100.00); select avgcost(sum, price) from t1; avgcost(sum, price) 75.0000 delete from t1; insert into t1 values(100, 54.33), (200, 199.99); select avgcost(sum, price) from t1; avgcost(sum, price) 151.4367 drop table t1; select metaphon('hello'); metaphon('hello') HL CREATE PROCEDURE `XXX1`(in testval varchar(10)) begin select metaphon(testval); end// call XXX1('hello'); metaphon(testval) HL drop procedure xxx1; CREATE PROCEDURE `XXX2`() begin declare testval varchar(10); set testval = 'hello'; select metaphon(testval); end// call XXX2(); metaphon(testval) HL drop procedure xxx2; CREATE TABLE bug19904(n INT, v varchar(10)); INSERT INTO bug19904 VALUES (1,'one'),(2,'two'),(NULL,NULL),(3,'three'),(4,'four'); SELECT myfunc_double(n) AS f FROM bug19904; f 49.00 50.00 NULL 51.00 52.00 SELECT metaphon(v) AS f FROM bug19904; f ON TW NULL 0R FR DROP TABLE bug19904; End of 5.0 tests. DROP FUNCTION metaphon; DROP FUNCTION myfunc_double; DROP FUNCTION myfunc_nonexist; ERROR 42000: FUNCTION test.myfunc_nonexist does not exist DROP FUNCTION myfunc_int; DROP FUNCTION sequence; DROP FUNCTION lookup; DROP FUNCTION reverse_lookup; DROP FUNCTION avgcost;