udf_test
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:1k
- #
- # For this script to work, you need to compile and install the
- # udf_example script !
- #
- CREATE FUNCTION metaphon RETURNS STRING SONAME "udf_example.so";
- CREATE FUNCTION myfunc_double RETURNS REAL SONAME "udf_example.so";
- CREATE FUNCTION myfunc_int 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 metaphon("hello");
- select myfunc_double("hello","world");
- select myfunc_int(1,2,3),myfunc_int("1","11","111");
- select lookup("localhost");
- select reverse_lookup("127.0.0.1");
- create temporary table t1 (a int,b double);
- insert into t1 values (1,5),(1,4),(2,8),(3,9),(4,11);
- select avgcost(a,b) from t1;
- select avgcost(a,b) from t1 group by a;
- drop table t1;
- DROP FUNCTION metaphon;
- DROP FUNCTION myfunc_double;
- DROP FUNCTION myfunc_int;
- DROP FUNCTION lookup;
- DROP FUNCTION reverse_lookup;
- DROP FUNCTION avgcost;