I am trying to insert data into a contacts table using foreign keys in mysql, the structure of tables are as follows The fk_id in the contacts table is the FOREIGN KEY and it relates to the pers_id PRIMARY KEY in the users table, I am trying to insert a new contact with relates to a user in the users
How to comapre two rows in SQL Server
Consider the below rows in a table I want to compare two rows and get difference between them. My required result would be: Answer …adjust..
Column to see Completion
I’m trying to come up with a way to add an extra column to this result-set that is a bit value of 1/0if the particular owner has all the rows as not null. The column would be: Answer You can use window functions:
How to exclude more rows by one match
Well, sorry but I don’t know how to formulate the subject correctly. That’s why I’d better describe the issue. I have a kind of following table: CREATE TABLE IF NOT EXISTS `Test` ( `Id` INT NOT NULL …
Multiple Many-to-many relationships
I’m new to database design, and I’m wondering what best practice would be to implement something like this in a relational database, MySQL specifically. Suppose I have the following three concepts …
MySQL – SQLyog Job Agent (SJA) – Two Way Database Syncronization Based on Date Time
I am working with MySQL and trying to use SQLyog Job Agent (SJA) I am trying to synchronize two databases in different physical locations. There is a date time column in each table, the row with the …
Filter SQL Query contain Array
I have a query, to display Profile, one of the column contain Array of languages fluent in. profile gender country nationality fluent_in 318 Male United Arab Emirates Lebanese …
Joining two tables on multiple values of the joining column
I am stuck in situation where I am unable to make any progress. The requirement is below. I have two tables one is ContentTag Id ContentId TagId 1 48 3 2 48 4 …
How to convert char data type to date in SQL Server?
In a table, there is a column BeginDate of type char(10) and all the records are saved in 2020/05/06 format. How can I change the data type to Date? Answer You could strip the / characters and then you have the ISO format yyyyMMdd.: But the real solution is fix your design; stop storing dates as a varchar.
Is there a way to return 0 if values does not exist in table using SQL Server
I have put down below a query to retrieve from four tables which are Query: The query is working well but if the Expense table has no values Expense.Invoice_No does not match with Sales_Invoice.Invoice_No, then the query above will return empty rows. But what I wish to do is that, if Expense.Invoice_No does n…