SQL is the language of databases, and we’ve reviewed the most basic command statements used in data queries. There are a number of basic concepts that weren’t covered, such as SUM and COUNT ...

SQL Insider. Drilling Down on Queries. Now that you understand the basic structure of a SQL application, let's dissect the basis of information retrieval: the query.

Ok I want to run a SQL query while using the event procedure VB in MS Access.<BR><BR>What I'm doing is trying to select a room of a building.<BR><BR>So the form goes : Building (and they pick say ...

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 ...

Basic SQL queries have a fairly simple structure. For example, a call to search for a particular order might look like. SELECT * FROM orders WHERE orderid=1234.

As we saw in the last article, the SQL SELECT statement has the widest variety of query options, which are used to control the way data is returned. These options come in the form of clauses ...

Analyze database contents using basic, intermediate and advanced SQL statement syntax and usage. Demonstrate capability to query data from multiple tables using SQL JOINS. Create and modify database ...

Such is the case with SQL queries. They seem so innocent, and so useful. But dangers lurk within every space-separated keyword. Consider a basic query crafted using ordinary C# string concatenation: / ...

Here's a look at different ways to query Hadoop via SQL, ... Some data-insertion functions are supported, but they’re still very basic: You can’t perform updates, only inserts.