Sql-ex.ru

    #php sql

    #programming

    #software development

    #opensource

    #development

    #embedded

    #sqlite

    #database

    #sql split string

    #upsert

    #timezone sql server

    #sql server

    #sql server 2019

    #server

    #continue

    #reading

    #tagged

    #performance

    #rick osborne

    #sql top n per group

    #сайт с тестами по sql

    #sql select 2 tables

    #sql practice

    #sql-ex

    #sql bolt

    #sqlbolt

    #sql 101

    #learn sql

    #sql aggregate functions

    #group by multiple columns

    #sql from two tables

    #sql group by multiple columns

    #select from two tables