List of lectures for the course SQL, 31 quest level on JavaRush

Data Types for Working with Time and Dates: DATE, TIME, TIMESTAMP, TIMESTAMPTZ
SQL SELF
31 level,0 lecture
Learn how to properly store and handle dates and time in PostgreSQL using specialized data types: DATE, TIME, TIMESTAMP, and TIMESTAMPTZ. Usage examples, benefits, and practical tips for working with temporal data.
Open
Functions for getting the current date and time: NOW(), CURRENT_DATE, CURRENT_TIME
SQL SELF
31 level,1 lecture
Learn how to use NOW(), CURRENT_DATE, and CURRENT_TIME functions in PostgreSQL to work with the current date and time. Examples, practical tips, and a comparison with CURRENT_TIMESTAMP.
Open
Extracting Date Parts: EXTRACT() and AGE()
SQL SELF
31 level,2 lecture
Learn how to pull out specific parts of date and time using the EXTRACT() function, and how to calculate age and intervals between dates with AGE() in PostgreSQL. Real-life examples, common mistakes, and tips for working with temporal data like a pro.
Open
Date Format Conversion
SQL SELF
31 level,3 lecture
Learn how to convert dates and timestamps in PostgreSQL using the TO_CHAR() and TO_DATE() functions: formatting for reports, user interfaces, and APIs, plus converting strings back to dates. Real-life examples, common mistakes, and pro tips.
Open
Working with Time Intervals: INTERVAL
SQL SELF
31 level,4 lecture
Learn how to use the INTERVAL data type in PostgreSQL to work with time spans: adding, subtracting, calculating the difference between dates, and practical examples for real-world tasks.
Open