TechRepublic

How to query multiple tables in SQL

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...
TechRepublic

SQL JOINs make it easy to find and fix missing data

SQL JOINs make it easy to find and fix missing data Your email has been sent Many people are confused by various JOIN operations supported by SQL. Learn to master the SQL command line with this crash ...
Ars Technica

[SQL] Need help forming SQL query for Inner Join via OleDB (MS Access)

I'm writing some code in C# where I need to (inner?) join two tables into a DataSet / DataTable.<BR><BR>Essentially, I have two tables. Both have columns called "TestId" and "OperationId". Both are ...
Visual Studio Magazine

Working with JSON in SQL Queries

SQL Server 2016 lets you treat JSON objects like rows in a table, allowing you to use data from AJAX queries in joins, updates and any other SQL statement you can think of. SQL Server 2016 provides ...
Ars Technica

SQL Server DTS Q.... Take two fields in .txt file and update based on query

I have a txt file with two fields. I want to update a value in a table in a SQL Server Db with a value from one of the fields in the text file. I want to do this based on a query using the second ...
InfoWorld

Put business logic in the application, not the database

We’ve all done it. We needed to pull data out of an SQL database, and the query we needed to pull out data was a complex query with multiple table joins, complex filter criteria, and sophisticated ...