diff --git a/SQL/SQL_Basics.md b/SQL/sql_1.md similarity index 100% rename from SQL/SQL_Basics.md rename to SQL/sql_1.md diff --git a/SQL/SQL_intermediate.md b/SQL/sql_2.md similarity index 100% rename from SQL/SQL_intermediate.md rename to SQL/sql_2.md diff --git a/SQL/SQL_advanced.md b/SQL/sql_3.md similarity index 100% rename from SQL/SQL_advanced.md rename to SQL/sql_3.md