I have two tables. First table contains names of individual teams and teamID which is PK. Second table contains details about matches: homeTeamID, awayTeamID, result. I somehow need to combine these two tables in which I would have names (not IDs) of home and away team and the result of a match. How to achiev…
Tag: join
JOIN with 3 tables, and MAX value for a column combination
I have 3 tables with name USER, SCORE and LEVEL as given below. From these tables, I’m trying to prepare a scoreboard, in which each user will be arranged based on their level, and score. And for each user, only highest level and corresponding highest score in that level will be shown. I have written a …
Clean way to construct cartesian joins in BigQuery (SQL)
I have multiple lists, and I want to construct cartesian joins of these lists using SQL. I’m wondering if you know a cleaner method than the one below. Thanks Answer Your query looks fine, but there is no reason to use CTEs:
How to make left join with `where second_table.key!=’value’` if there is not record in secord_table at all
There are two tables with one-to-one relationship, and it’s a legal that the second table can have less rows than the first. Here is a sql code with inserted data: I need to make a query for all data + data_extra tables where extra!=’e1′ Here is my try: The problem with this query, that it d…
How do I complete a cross join with redshift?
I have two tables. One has a user ID and a date and another has a list of dates. I’m getting this error with redshift Error running query: Specified types or functions (one per INFO message) not supported on Redshift tables. Can I do a cross join with redshift? Answer Alas, Redshift supports generete_se…
SQL merge two tables – get only one row for each key value
I’m trying to run an SQL command on my database. I have two tables, one for users, another one for posts. I want to find last post of each user. I tried following: SELECT b.`username`, b.`id`, c.`…
How to set unique column values using an update from select statement
I am trying to achieve a 1:1 mapping between two tables based on their content. Unfortunately, the 1:1 mapping can not be perfect, as not both tables contain the exact same set of data. Anyways, I want to have the best possible match. Let the code talk in an example: My expected output would be something like…
Return value from another table that matches values from the first table
I have a simple problem. I have tables A and B, both contain 3 common columns (name, id, date), and besides those 3, both tables have completely different set of columns. Now, I need to relate data from Table B to table A for visualization purposes. Since I am not that good with SQL, I thought I could ask if
Correspondence between two tables
I have table the table code_Commune contains gps for the city in general code_Commune: Now I need to do correspondence with the table lead to add code_commune and Nom_Commune: Table lead Is there any way to do correspondence between the two tables? Answer You can find the closest city using some sort of dista…
How do i use COUNT with JOIN SQL 3 tables
I have 3 tables. First table is Battles with columns: –battleId(primary)–gameId(foreign)–prize– Second table is Games with columns: –gameId(primary)–gameName– Thrid table is …