This is my sample data CREATE TABLE customer1 ( rating int(9), genre varchar(100), title varchar(100) ); INSERT INTO customer1 (rating, genre, title) VALUES (2, ‘A’, ‘abc’), (4, ‘A’, ‘…
Tag: subquery
MySQL multiple columns in ALL clause [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 1 year ago. Improve this question Why it is not allowed to do the following? But it is possible to do Answer Assuming that this is the query you wanted to
How can you assign a value to a variable if mysql does not yield any result?
There are two databases. I am trying to see if email in the first database is also present in the second database. Here’s the code that I’ve tried: The output is: The type for onera and julian is blank because there email is not present in the phpbb_users database. How can I avoid this blank space and make it 1
Oracle SQL Subquery – Usage of NOT EXISTS
I used a query to find a list of Primary Keys. One Primary key per each ForiegnKey in a table by using below query. Let us say this is the result : 1,4,5 NOw I have another table – Table B that has list of all Primary keys. It has 1,2,3,6,7,8,9 I want a write a query using the above
How to speed up sql query execution?
The task is to execute the sql query: select * from x where user in (select user from x where id = ‘1’) The subquery contains about 1000 id so it takes a long time. Maybe this question was already …
Wrong syntax for OVER and PARTITION in MySQL syntax
SELECT Id, Price, CustomerId, ROW_NUMBER() OVER (PARTITION BY CustomerId) FROM Orders; I get the error “Syntax error: Unexpected ‘(‘ (opening parenthesis) Does MySQL not support this? I’m pretty …
How can I pull out the second highest product usage from a SQL Server table?
We have a product usage table for software. It has 4 fields, [product name], [usage month], [users] and [Country]. We must report the data by Country and Product Name for licensing purposes. Our rule …
PostgreSQL: Sub-Query on one table
My table looks (simplified) like this: It records filenames “File”; sometimes, a file (here BBB) is replaced by a newer one (here CCC”. First show all records, that have been replaced: OK, brings up line 2. Now I need to add a subquery column QQ, which shows the File of the substitute record, e.g. should bring: . My approach does
Convert multiple self JOINs to window function or subqueries (SQL)
I have a query with several self joins: Here is a sample table where in yellow I marked the record that is within the boundaries of the where condition: Here is the expected result view: Basically I filter one table with several consecutive conditions and show the result as a table. Is there a way, using window function or subquery
How to pull the count of occurences from 2 SQL tables
I am using python on a SQlite3 DB i created. I have the DB created and currently just using command line to try and get the sql statement correct. I have 2 tables. When I setup table two, I added this statement in the creation of my messages table, but I have no clue what, if anything, it does: What