Question : First of all, I have a solution, but I do not know that query can be transformed to […]
Tag: join
Using Join to get data from multiple tables in SQL Server [closed]
Question : Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? […]
COUNT number of column values with INNER JOIN [closed]
Question : Closed. This question is off-topic. It is not currently accepting answers. This question does not appear to belong […]
How to optimize selection of pairs from one column of the table (self-join)?
Question : I’m using PostgreSQL 9.5.19, DBeaver 6.3.4 I have a table where one row is – user’s name, place […]
Wrong results on queries with join for some MariaDB versions
Question : I found that on some versions of MariaDB server some simple queries return wrong results for certain data. […]
Optimize a slow nested loops join
Question : I have this query running around 15 seconds on my system. The query plan is here. I believe […]
I am unable to join tables in correct manner
Question : I have created Four Tables- 1) Registration Table – it has registration id(rid),First Name of user(fname), Last Name […]
Combine two queries from 1 table, 1 to Many
Question : I have the following queries select o.increment_id, o.customer_id, round(o.base_grand_total * o.base_to_global_rate,2) as revGBP, DATE_FORMAT(o.created_at, ’01/%m/%Y’) as ‘MonthofOrder’, from […]
Table concatenation
Question : I want to have a dynamic query that I can concatenate my table based on current month. I […]
Sql server table insert performance optimization
Question : Setting In a datawarehouse, I am joining a fact table to 20 dimensions. The fact table has 32 […]