I have two tables, lets call them A and B. Table A has data regarding specific events and has a unique key column pairing of event_date and person. Table B has aggregate data over time and thus has key columns start_date,end_date and person. The date ranges in table B will never overlap for a given person so end_date is not
Tag: merge
MS Access – Selecting which table to merge
Is there a way to choose which table do I merge using SQL in MS Access through entering parameter value? Let’s say I have 3 tables: Users, 2021 and 2022. Any my query is: I get “Enter Parameter Value” window to filter the code that I want to check, but I would like to get the same to choose other
Merging Respective Start and End Dates, Setting Flag Depending on Start/End Date – SQL
Problem: I have a table of transactions (see below) with either (open/start) or (close/end) transaction in the format of date. The task is to merge these transactions with their corresponding dates, however, there can be also cases when the transaction is opened/started, but not closed/ended, in which case only Start Date must be shown, and the Flag ‘Y’ assigned. The
DB2 LUW MERGE using same table to update a different row
My table data looks like this My poorly attempted SQL is this… It is updating all rows in the table. I do not want this. How can I make it ONLY update the 1 latest PRINTED row which has an empty PDF_FILE ? Answer The idea is to enumerate target rows and update only the 1-st one.
How to update several tables with a result query?
I am working with SQL Server 2017, and I need to clean up duplicate rows and update all rows in other tables that contain my field. I’ve got one table which contains my customers Then I have 7 tables that contains the userid column and 1 table with another name column My other tables: I want to clean the duplicates
MySQL – Query and group in a single row
I have a set of data as below: EmployeeId Salary_Basic Salary_Transport Year E001 12000 3000 2018 E002 9000 2000 2018 E001 13000 3200 2019 E002 10000 2400 2019 E003 15000 5000 2019 What I want is below: EmployeeID NetSalary_Year2018 NetSalary_Year2019 E001 15000 16200 E002 11000 12400 E003 0 20000 Can anyone suggest the sql query on MySQL please? Thanks Answer
MySQL Merge two queries based on mutual column
I have two queries that retrieve records from 2 different tables that are almost alike and I need to merge them together. Both have created_date which is of type datetime and I’m casting this column to date because I want to group and order them by date only, I don’t need the time. First query: Second query: What I need
Join pandas dataframes based on different conditions
I´m using Pandas in Python and I’d like to join 2 dataframes. My first dataframe is: id var date 1 ABCD 2019-01-01 1 ABCD 2017-06-01 1 ABCD 2016-06-01 2 ABCD 2016-01-01 The dataframe I want to …
Snowflake how to split a field having values separated with commas and add them separately to the target table each value in a single row?
I have a field that might hold values as follows: field_val = ‘Val1, Val2’; So using merge into command, I need to split these values and add them separately each as a single row. In that case, I don’t want them added row to be: 23, ‘Val1, Val2’ What I want is to add the separately as single rows: 23,
How to merge in SQL when the key variable is repeated in one of the tables?
I have a dataset with two tables. In the first, I have information about workers and in the second about companies. Each worker has an ‘id’ of the firm to which he belongs. I would like to create a …