Mysql join latest record8/24/2023 ![]() ![]() Date DESC ) as tmp ON Table1.ID tmp.FKTable1 GROUP BY Table1.ID. The result set below should only show the complete records for each account. Hi, I have two tables and I want select all rows from first table and rows from second table with latest date. There are only 2 rows in Table 1, and if you run the subquery separate it returns only 2 rows, so I’m confused why 4 rows are being returned. I want to get the most recent record (or last record) for each account from Table 2, and then join that data to Table 1. ![]() You should post these to /r/learnsql instead.I’m not sure how to explain what I did, but I joined the data in Table 2 to Table 1, instead of joining the data from Table 1 to Table 2, and it worked. Note /r/SQL does not allow links to basic tutorials to be posted here. Please view the Wiki for online resources. Learning SQLĪ common question is how to learn SQL. 1 I have two tables 1.Product table having columns prodcode alertlimit proddescription 2.Dailydata table having columns prodcode usedtoday date stockleft How should i join these two tables to get recent records of each product on the basis of date I have tried SELECT p., d. ![]() SELECT count(a.field1), a.field2, SUM(b.field4) FROM a INNER JOIN b ON a.key1 = b.key1 WHERE a.field8 = 'test' GROUP by a.field1, a.field2 HAVING SUM(b.field4) > 5 ORDER by a.field.3įor those with SQL questions we recommend using SQLFiddle to provide a useful development and testing environment for those who wish to fully understand your problem and help devise a solution. If the values in the two rows are not matched, the left join clause still creates a new row whose columns contain columns of the row in the left table and NULL. Very often we need to select the most recent record or get the latest record for each date, user, id or any other group. Something as simple as line breaks and using reddit's built in code formatting (4 spaces at the start of each line) can turn this: This will greatly increase your chances of receiving the help you desire. If you are including actual code in a post or comment, please attempt to format it in a way that is readable for other users. As we now know the most recent date for each group of records, we can join this data with our original table so that we can get the most recent record for each. We will gladly help where we can as long as you post the work you have already done or show that you have attempted to figure it out on your own. If you are a student or just looking for help on your code please do not just post your questions and expect the community to do all the work for you. While naturally we should endeavor to work as platform neutrally as possible many questions and answers require tailoring to the feature set of a specific platform. ORDER BY customerid Instead of a separate subquery to number the rows or define the most recent order using order ID, we use DISTINCT ON (customerid) to get only the first row corresponding to each customer. When requesting help or asking questions please prefix your title with the SQL variant/platform you are using within square brackets like so: Very often we need to select the most recent record or get the latest record for each date, user, id or any other group. SELECT tbl.MachineName ,tbl.DateColumn ,tbl.Column3 -,tbl. The goal of /r/SQL is to provide a place for interesting and informative SQL content and discussions. MySQL - Select Latest Record for Each Group. The record you want to see is the one with the latest information (determined by the date column) The following generalized query will allow you to do this.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |