How to use MySQL to query last week’s data
When processing time series data, it is often necessary to retrieve records based on a specific time period. This article will introduce how to query last week's data and start the week with Sunday.
Query structure:
We will use the following MySQL query structure:
SELECT column_list FROM table_name WHERE date_column BETWEEN start_date AND end_date;
Calculate start and end dates:
To determine the start and end dates of the previous week, we will use the DATE_SUB() and NOW() functions:
-
DATE_SUB(NOW(), INTERVAL 1 WEEK)
: Subtract one week from the current date and return the starting date of the previous week. -
NOW()
: Returns the current date and time.
Example query:
Assuming the table structure and sample data are known, the following query will select the id column value from the last week:
SELECT id FROM tbname WHERE date BETWEEN DATE_SUB(NOW(), INTERVAL 1 WEEK) AND NOW();
Expected output:
Based on the provided table values, the expected output of the query is 5, 6, 8, which represents the id values recorded within the last week.
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