The data in the array looks like XXXX:”False”. I used element_at(array_name,’Field’) and contains(map_keys(array_name),’Field’). They only check if the element is present in the array. But if the ‘Field’ has a value of ‘true’, How do i check that val…
SQL Column Contains ID of Another Row
Suppose I have a SQL database my_table of the following form where one column contains the id of another row. How can I select both the name column of the given row and the name of the underlying id …
Join and flatten table output
I am currently trying to join 3 tables. The main table is company, if there is 3 companies and 2 roles exists in the role table I want the output to be like this: Company1, Role 1, …
How to distribute values when prior rank is zero
Not certain how to title this question. Describing is a bit of a challenge, too. I have shaped my postgres data as follows, where a location and geo is further broken out into micro geo’s based on …
SQLite: How to retrieve data from column in one table using SELECT to insert retrieved data in another table
I am attempting to use SQLite to retrieve data from the main table (mutants.info) and insert data from that table into a secondary table (mutants.teams). The main table has multiple columns, but I am …
User with multiple companies (different type)
I built an application in Laravel that is a simple CRUD app. Now im struggling with migrations a bit. User belongs to Company. Company can have many users. Company type can be Supplier, Customer or …
Retrieve all records with the 5 most recent distinct dates
I need to retrieve data for a history module with pagination. The requirement is to show the records for the five most recent dates first (regardless of the number of rows) and load the remaining records in lots (next five dates, any number of rows) as requested by the user. I came up with the query below, wh…
Error Code: 3813. Column check constraint ‘customer_details_chk_2’ references other column
CREATE TABLE Customer_Details ( Customer_Id int(4) auto_increment, C_FirstName char(20), C_LastName char(20), PRIMARY KEY (Customer_Id), C_Temperature decimal(5,2), Mail_Id …
SQL query for most recent date
I’m trying to query to only pull the most recent sale date but keep the unique value of “strap”. This is the query result I have. nh_cd strap dor_cd acreage sqft sale date …
Do any databases get NULL and “NULL” confused, or is it always an application design failure?
I’ve read a few articles like this one about a license plate value of NULL (about Droogie from DEF CON 27), including part of chapter three Little Data in the book Humble Pi by Matt Parker (talking about Steve Null), where storing a string value of “NULL” in a database matches NULL values. W…