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Common Functions in PostgreSQL

Introduction
Dealing with dates
Working with time
Date and time data types in PostgreSQL
Extracting dates and times
Timezone conversion
Format date and time
Current date and time data
Summary
52. Exercise 5

Instruction

Great! Let's do another exercise.

Exercise

Find out how many aircraft were registered each week. Show two columns: week and count. The week column should have values like 2011-01-31 00:00:00.