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 ...
TechRepublic

Understand the effects of NULLs on inner and outer JOINs

Understand the effects of NULLs on inner and outer JOINs Your email has been sent SQL Server developers must understand two things: the difference between inner and outer JOINs and the effect of NULLs ...
Ars Technica

inner join and order by - why is it so slow?

I have a MySQL (yes, I know) database with two relevant tables, t with 52230 rows and r with 5 rows. r has primary key r_id and t has foreign key r_id -> r.r_id. I ...
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 ...