In PostgreSQL, if i have this kind of record : |——————|———————|——————| | corona_country | corona_patient | corona_suspected | |——————|———̷…
Tag: inner-join
Inner join with Count, multiple tables
I’m having an issue with MS Access to get correct counts on multiple tables. I’m not at all an expert in SQL requests. I have a set of tables which is structured as follow : Table1 : UID, Name, other informations Table2 : UID, FK_UID_Table1, Name, other informations Table3 : UID, FK_UID_Table2, Na…
How can I determined which users with a specific RoleID that’s not been active within a time interval? And which home department do they belong to?
This script below will tell me how many non active users with a certain RoleID there’s been within a timeframe. When I run the script below. It will also tell me which home department each user …
mySQL Self Join – inner join or join
quick clarification. When joining contents from the same table, must I always declare join type as INNER? For example, (on the table shown in this screenshot) When I tried to remove the keyword INNER, it was wrong. Is it because JOIN does not exist in SQL? Thanks and cheers. Answer You do want a self (inner) …
Self Joining between 2 same tables
For instance I have a table called employees where it consists of “Employee ID”, “First Name”, “Last Name”, “Manager ID”. To count the subordinate of each manager, I tried to self-joining between the 2 tables. Am I right? Also, if I want to join with other table…
Multiple inner joins in pymysql
I am attempting to select multiple columns from three tables in pymysql, and inner join them. I don’t understand what is going wrong when I add the second inner join. I feel like it’s a simple syntax …
SQL Retrieve info from two tables
I am really lost with sql.. i tried to read everything but no luck. I have two tables and need to retrieve data from them: First Table – Workers | Second Table – Stores Select workers first name that belong to more than one store? Select all workers first name that are in the shoe store? Hope you …
APEX get Multiple entries FK
,i dont know what so search for my problem. I think its very simple, but i dont know about that 🙂 I have a Table where i listed all my “Groups/Teams” And then i have a Users Table where i list all the People: I use APEX 18.1 and have a Form with a List of Values, there i can
Aggregate Function Error With Basic Query
My database is based on a cinema, I am trying to make a query which displays the number of tickets purchased for each movie screening. The tables involved in this query are Bookings, Screenings and Movies. Here is the Bookings table: The Screenings table: And the Movies table: I have so far managed to get the…
UPDATE with INNER JOIN on SQL Server
I have 2 tables Users and Orders. Primary key of Users is UserId, which I have defined as foreign key in the Orders table. I have added a new column of UserName to Orders. I want to import UserName …