udf_test.res

开启mysql的远程连接的方法 mysql-noinstall-5.1.6-alpha-win32.zip

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CREATE FUNCTION metaphon RETURNS STRING SONAME "udf_example.so"
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Query OK, 0 rows affected

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CREATE FUNCTION myfunc_double RETURNS REAL SONAME "udf_example.so"
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Query OK, 0 rows affected

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CREATE FUNCTION myfunc_int RETURNS INTEGER SONAME "udf_example.so"
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Query OK, 0 rows affected

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CREATE FUNCTION lookup RETURNS STRING SONAME "udf_example.so"
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Query OK, 0 rows affected

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CREATE FUNCTION reverse_lookup RETURNS STRING SONAME "udf_example.so"
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Query OK, 0 rows affected

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CREATE AGGREGATE FUNCTION avgcost RETURNS REAL SONAME "udf_example.so"
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Query OK, 0 rows affected

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CREATE FUNCTION myfunc_argument_name RETURNS STRING SONAME "udf_example.so"
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Query OK, 0 rows affected

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select metaphon("hello")
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metaphon("hello")
HL
1 row in set

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select myfunc_double("hello","world")
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myfunc_double("hello","world")
108.40
1 row in set

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select myfunc_int(1,2,3),myfunc_int("1","11","111")
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myfunc_int(1,2,3)	myfunc_int("1","11","111")
6	6
1 row in set

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select lookup("localhost")
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lookup("localhost")
127.0.0.1
1 row in set

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select reverse_lookup("127.0.0.1")
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reverse_lookup("127.0.0.1")
localhost
1 row in set

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create temporary table t1 (a int,b double)
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Query OK, 0 rows affected

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insert into t1 values (1,5),(1,4),(2,8),(3,9),(4,11)
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Query OK, 5 rows affected
Records: 0  Duplicates: 5  Warnings: 0

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select avgcost(a,b) from t1
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avgcost(a,b)
8.7273
1 row in set

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select avgcost(a,b) from t1 group by a
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avgcost(a,b)
4.5000
8.0000
9.0000
11.0000
4 rows in set

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select a, myfunc_argument_name(a) from t1;
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a       myfunc_argument_name(a) myfunc_argument_name(a as b)
1       a       b
1       a       b
2       a       b
3       a       b
4       a       b
5 rows in set

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drop table t1
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Query OK, 0 rows affected

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DROP FUNCTION metaphon
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Query OK, 0 rows affected

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DROP FUNCTION myfunc_double
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Query OK, 0 rows affected

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DROP FUNCTION myfunc_int
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Query OK, 0 rows affected

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DROP FUNCTION lookup
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Query OK, 0 rows affected

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DROP FUNCTION reverse_lookup
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Query OK, 0 rows affected

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DROP FUNCTION avgcost
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Query OK, 0 rows affected

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DROP FUNCTION myfunc_argument_name;
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Query OK, 0 rows affected

Bye