I have three table review_form_languages, review_form_translations and rate_params. rate_params -> id, label review_form_languages -> id, name review_form_translations -> id, rate_params_id, …
Tag: join
SQL Joins for Multiple Fields with Null Values
I have a table of maintenance requirements and associated monthly frequency it is to be performed maint I also have a table of equipment with data on its manufacturer, model, device type and building. equip I am trying to match each maintenance requirement with its associated equipment. Each requirement appli…
SQL Server: remove duplicates in exchangeable columns
I have this query: select OSFES97.CodeId, OSFBA97.CodeId, OSFES97.ReceiveDate from StockArchives OSFES97 inner join StockArchives OSFBA97 on OSFBA97.ReceiveDate = OSFES97.ReceiveDate …
Understanding where clause vs join
Can somebody explain the difference between below query examples. select column1,column2 from table1 join table2 on table1.columna = table2.columna and columna=’1234′ vs select column1,…
How to do SQL Join with many tables (FK tables have looped results sharing ID)
I am newish to SQL and Join statements and I am way out of my league at the moment I currently have 6 Database Tables that are all linked to the main 7th table based on the main tables ID, however all …
SQL – Fetch associated data from multiple table
I have 4 tables. The table does not contain any foreign key reference t1: | id | name | +—–+—————-+ | a1 | cheese | | a2 | butter | | a3 | milk | …
Very slow (12+ hours) large table joins in postgres
I am struggling to optimize a simple LEFT JOIN against two very large tables that so far has been taking > 12 hours to complete and ongoing. Here is the execution plan: Gather (cost=1001.26…..
Parent child relationship Join tables in oracle sql
I have a requirement below. Now I have to get output like below How can this be achieved ? I have written the below SQL but parent_position_id is coming, not parent_position_code select hapf….
MS SQL Join Two Tables with ‘IN’ Faces Problem
I have two tables for my system. Table 1: Book Table 2: BookStatus Now I want to find out the latest status of books that had been lent from 2018/11/05 to 201/11/10 and how many times they have …
postgresql inner join and left join
I have the following database structure, with postgres 9.5: create table users ( id character varying(255), email character varying(127) ); create table org_users( id character varying(255), …