How would you select 10 cities records for each country so that the query would be as fast as possible in Oracle database?
This is my table:
ID
CITY_NAME
COUNTRY_NAME
SIZE
How would you select 10 cities records for each country so that the query would be as fast as possible in Oracle database?
This is my table:
ID
CITY_NAME
COUNTRY_NAME
SIZE
برچسب:
نویسنده: استخدام کار