stdpain opened a new issue #5977:
URL: https://github.com/apache/incubator-doris/issues/5977
1. create a lua function
```sql
-- create udf function int (int,int)
CREATE FUNCTION lua_add(int,int)
RETURNS int
properties
(
"type"="LUA",
"symbol" = "LUA_ADD",
"object_file" = "http://127.0.0.1:8097/ans.lua";
);
-- create udf function string (string,string)
CREATE FUNCTION lua_cat(varchar(50),varchar(50))
RETURNS varchar(50)
properties
(
"type"="LUA",
"symbol" = "LUA_STRCAT",
"object_file" = "http://127.0.0.1:8097/ans2.lua";
);
```
ans.lua:
```lua
function LUA_ADD(a, b)
return a+b;
end
return 1
```
ans2.lua
```lua
function LUA_STRCAT(a,b)
return string.format("%s %s",a,b);
end
```
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