Table 1: employee_detail: id name 1 ABC 2 CCC 3 FFF 4 ggg 5 jjj Table 2: performance_appraisal id …
Tag: inner-join
Derby – java.sql.SQLException: Column ‘table.column_name’ not found
I have these 2 tables: inventory and product_categories both tables have a common column called businessId. Now I have 2 databases, one is hosted on MySQL and the other on Derby both databases have same table structures. So I’ve been executing the following query on both databases: When I execute the query above using the Java code below, I get
How to INNER JOIN only one row from second table
I have a issue joining only one row from the second table statement: SELECT ART.*, EAN.* FROM ART,EAN WHERE ART.ARTNR = ean.unit_artnr AND ean.typ = ‘LE4’; TABLE EAN has sometimes 2 …
Selecting data from 3 linked tables
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, …
How to join two tables based on FIRST VALUE of a group
Objective: I would like to join two tables based on the first value of Id column grouped by subscription Id column ordered by created_at column. Situation: Table1 looks like this: id channel …
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 …
Using inner join instead of subquery
I wrote a query using a subquery, but I wonder if there is any way to write it using only inner join (or other joins) since it’s more efficient. /*2. List the name of the sales rep who serves the …
SQL SUM on multiple INNER JOIN
I am trying to get the sum of particular fields through multiple table using joins. I am getting the SUM wrong when I I try to get the values together. I have table State as I have another table Balance as I have one more table Loan as What I want as a result from my query is, When I
Which one is quicker/optimized – Inner Join or Partition By – to obtain Aggregated data?
In my data ‘table1’, there are multiple records for each app_id. I’m trying to get a latest app_id entry. Which one of the below queries would be quick or better to consider in terms of performance …
Getting all weeks data of a month using inner join
I have the following query: Above query explanation: I’m getting all weeks data PaidKM which driver gets in a whole month. The month for example starting date is 01-07-2018 and ending date is 31-07-2018 which covers whole month # 07. But when I change the month it gives me the same results all time. Above GIF’s query implementation: I have