udf.result

这是linux下运行的mysql软件包,可用于linux 下安装 php + mysql + apach 的网络配置

drop table if exists t1;
CREATE FUNCTION metaphon RETURNS STRING SONAME 'udf_example.so';
CREATE FUNCTION myfunc_double RETURNS REAL SONAME 'udf_example.so';
CREATE FUNCTION myfunc_nonexist RETURNS INTEGER SONAME 'udf_example.so';
ERROR HY000: Can't find function 'myfunc_nonexist' in library
CREATE FUNCTION myfunc_int RETURNS INTEGER SONAME 'udf_example.so';
CREATE FUNCTION sequence RETURNS INTEGER SONAME "udf_example.so";
CREATE FUNCTION lookup RETURNS STRING SONAME 'udf_example.so';
CREATE FUNCTION reverse_lookup
RETURNS STRING SONAME 'udf_example.so';
CREATE AGGREGATE FUNCTION avgcost
RETURNS REAL SONAME 'udf_example.so';
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;
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;