List of lectures for the course SQL, 2 quest level on JavaRush

Selecting Specific Columns: Pulling Data by Column Names
SQL SELF
2 level,0 lecture
Learn how to pick just the columns you need from SQL tables, use aliases for readability, combine values, and dodge common mistakes when working with SELECT queries.
Open
Filtering Data with Comparison Operators (=, >, <, <>)
SQL SELF
2 level,1 lecture
Learn how to filter data in SQL using comparison operators: =, >, <, <>, plus check out some common mistakes and practical examples of using WHERE.
Open
Logical Operators (AND, OR, NOT): Combining Conditions
SQL SELF
2 level,2 lecture
Learn how to use logical operators AND, OR, and NOT in SQL to create complex data filtering conditions. Examples, execution priority, and common mistakes.
Open
Sorting Data (ORDER BY): Ascending and Descending Sort (ASC, DESC)
SQL SELF
2 level,3 lecture
Learn how to sort SQL query results using the ORDER BY operator, use ASC and DESC sort directions, sort by multiple columns, aliases, and calculated values. Real-life examples and common mistakes.
Open