Learn how to master the SELECT statement ... column name as its parameter, and it will return “0” if it’s used on a non-numeric column. SELECT AVG(net_amount) FROM Sales; You can limit ...

Read this SQL tutorial ... a simple SELECT statement will meet your needs. JOIN works in the same way as the SELECT statement above: It returns a result set with columns from different tables.

runs a fairly meaty SQL SELECT query (4 tables, 7 columns in one query) using this information. Upon getting that information the program then performs either an UPDATE or an INSERT depending on ...

First, you specify a PROC SQL CONNECT statement to connect to a particular ORACLE database that resides on a remote server. You refer to the database with the alias MYDB. Then you list the columns ...

Because a JSON string equates to a plain text string, SQL Server and any ... null The following T-SQL query shows how to select only the countries that count more than 100 million inhabitants. The ...

As one composes SQL Select statements, the author may use another query in place of any table or view. Even individual columns may be replaced with ... Of course, many databases do have a limit on the ...

SQL Server 2016 and Azure SQL Database both give you ... You don't have to use the HIDDEN option on your datetime2 columns but, if you don't, any Select * query on the table will return the columns.

The next release of Microsoft SQL Server, announced as SQL Server 2017, is available for download in CTP2 at http://tinyurl.com/SQLvNextLinux and offers many cool new ...

In part 1 of my SQL Server ... used when the query was compiled and is suboptimal for other values. This is typically caused by data skew. For example, if you had a column that had integer values ...

For comparison, the equivalent SQL query to return all of the students in CS 101 would be something like SELECT student.name FROM courses, enrollees, students WHERE course.name ="CS 101" That ...