Web1 Answer. Sorted by: 9. SELECT B.* FROM ( select id,max (date) date from table1 group by id ) A INNER JOIN table1 B USING (id,date); You should create this index to help this run faster. ALTER TABLE table1 ADD INDEX (id,date); WebJun 6, 2014 · 3. Create one group or rows for each distinct name using group by name. You can then select the name (because every row in the group has the same name.) The …
Get records with max value for each group of grouped SQL results
WebMySQL select the row with maximum value in a column : LEFT JOIN. Another approach to get the row with maximum value in a particular column is using the joins.Again, we will be writing a select query using JOINS to get the name, commission percentage, number of products sold for the salesperson who sold the maximum number of products from … WebFeb 4, 2024 · 5 Ways to Select Rows with the Maximum Value for their Group in SQL. Here are five options for using SQL to return only those rows that have the maximum value … how to start a business in ohio with no money
mysql - SELECT LIMIT 1 per column value? - Database …
WebNov 21, 2015 · The row being selected for a specific distinct value should be the one with the maximum value of another column (within the group of rows having that value for the former column). I tried. SELECT column1, column2, MAX(column3) FROM table GROUP BY column1; which doesn't work because in the results column2 and MAX(column3) are not … Web11. That's what GROUP BY is used for. Get one row (per group). In this case, it will show all distinct user_id values and for the rest of the columns, you can (have to) use aggregate functions like MIN (), MAX (), AVG (), SUM () as you will have more than one values per group and only one can be shown. SELECT user_id , MIN (comment) AS comment ... Webselect a, group_concat(concat(b, ':', 'c')) as bcs from t group by a; All SQL systems deal in tables: rectangles of data with rows and columns. Your question asks for a result set which isn't really a rectangle of data, in the sense that it contains "header" rows and "detail" rows. Example: (header row) - apple (detail row) how to start a blog on wordpress