How to Generate a Date Range Covering the Last Year in SQL?

Generating Date Ranges Using SQL

Question:

How can I generate a list of dates spanning the last year for use in a SQL query that requires a date parameter?

Answer:

To generate a range of dates using SQL, there are various methods available. One efficient approach is to utilize the CONNECT BY clause, as demonstrated below:

SELECT TRUNC(SYSDATE - ROWNUM) dt
FROM DUAL
CONNECT BY ROWNUM <p>This query generates a list of 366 dates, representing the last 365 days. The TRUNC function truncates the date to remove the time component, leaving only the date value.</p><p>By using the DUAL table in conjunction with CONNECT BY, you can generate a sequence of rows based on the specified condition (ROWNUM </p><p>This method provides a straightforward and efficient solution for generating a range of dates for use in SQL queries, without the need for additional tables or complex logic.</p>

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