Скачать или смотреть SQL Performance Tuning Tip

Free SQL Pattern Training: https://etlsql.kartra.com/page/sps-fr...

Do you understand SQL but still cannot write SQL queries correctly ?
Are you afraid to switch jobs because of the SQL interview rounds or have you failed SQL Interview earlier ?
If you are someone who understands SQL and need more confidence to solve SQL queries correctly, I would like to share my recent online course especially created for you.
Check for more details: https://etlsql.kartra.com/page/sql-pa...

Divide your SQL Performance efforts into 3 categories
1) Query level optimisation
2) Table level optimisation
3) System level optimisation
Target each one of it one at a time