database/mariadb-columnstore-engine
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Merge branch 'develop' into MCOL-1793

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This commit is contained in:
David Hall
2018-11-20 16:30:22 -06:00
parent 9c1bc910a5 410734821b
commit 3709fe92a5
181 changed files with 2839 additions and 21116 deletions
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4
utils/udfsdk/README.txt
View File

@ -11,7 +11,7 @@ files to create your own function or just try that function as is.
$ make
- Copy the libudf_mysql.so.1.0.0 and libudfsdk.so.1.0.0 file to /usr/local/mariadb/columnstore/lib on
every columnstore node.
$ sudo cp libudf_mysql.so.1.0.0 libudfsdk.so.1.0.0 /usr/local/mariadb/columnstore/lib/
$ cp libudf_mysql.so.1.0.0 libudfsdk.so.1.0.0 /usr/local/mariadb/columnstore/lib/
- Restart ColumnStore
$ mcsadmin restartsystem y
- Using the mcsmysql client add the user defined function, e.g,
@ -20,4 +20,4 @@ files to create your own function or just try that function as is.
> create function mcs_isnull returns string soname 'libudf_mysql.so';
You should now be able to use the mcs_add(arg1, arg2) and mcs_isnull(arg) functions in the select and/or where clauses
of SQL statements.
of SQL statements.

53
utils/udfsdk/udfmysql.cpp
View File

@ -572,6 +572,59 @@ extern "C"
struct avgx_data* data = (struct avgx_data*)initid->ptr;
return data->sumx / data->cnt;
}
/**
* distinct_count connector stub
*/
#ifdef _MSC_VER
__declspec(dllexport)
#endif
my_bool distinct_count_init(UDF_INIT* initid, UDF_ARGS* args, char* message)
{
if (args->arg_count != 1)
{
strcpy(message,"distinct_count() requires one argument");
return 1;
}
return 0;
}
#ifdef _MSC_VER
__declspec(dllexport)
#endif
void distinct_count_deinit(UDF_INIT* initid)
{
// free(initid->ptr);
}
#ifdef _MSC_VER
__declspec(dllexport)
#endif
void
distinct_count_clear(UDF_INIT* initid, char* is_null __attribute__((unused)),
char* message __attribute__((unused)))
{
}
#ifdef _MSC_VER
__declspec(dllexport)
#endif
void
distinct_count_add(UDF_INIT* initid, UDF_ARGS* args,
char* is_null,
char* message __attribute__((unused)))
{
}
#ifdef _MSC_VER
__declspec(dllexport)
#endif
long long distinct_count(UDF_INIT* initid, UDF_ARGS* args __attribute__((unused)),
char* is_null, char* error __attribute__((unused)))
{
return 0;
}
}
// vim:ts=4 sw=4: