How do you select min date sql ?
While trying select the min date SQL I am selecting records from a data extension that has an email address appearing more than one time but with a different date, using the below query:
It is showing the correct record, 127 records out of 403, and it is giving other columns like position, slot, and client, which I need to pull through. However, adding these to SELECT and GROUP BY clauses pulls all 403 records instead of 127. How to fix this?
I can see that the first SQL delivered the correct results because there is only one combination of grouping on the email address, but the second one has a grouping of four columns with 403 different combinations.
I have used the ROW_NUMBER() function to assign a number to each row and group them by email address and order by date in ascending order.
Answer (1)
To select the minimum date from a SQL database table, you can use the MIN() function along with the appropriate column that holds the dates. Here's a simple example assuming you have a table called your_table with a column named
date_column:SELECT MIN(date_column) AS min_date
FROM your_table;This query will return the minimum (earliest) date stored in the date_column. The MIN() function will find the smallest date value in that column, and AS min_date gives the result column an alias for easy reference.
If you have time-specific requirements or need to filter based on certain conditions, you can add a WHERE clause:
SELECT MIN(date_column) AS min_date
FROM your_tableWHERE some_condition;Replace some_condition with the condition you need to filter the rows. This condition can be based on any column in your table, depending on your specific requirements.