A SQL query is a statement that specifies what data you want to retrieve from a database. A query consists of keywords, clauses, expressions, and operators that follow a certain syntax and logic.

SQL queries are powerful tools for retrieving and ... It is the most common and default type of join in SQL. For example, if you have a table of customers and a table of orders, you can use ...

For this example you create a view descriptor, VLIB.ALLEMP, based on SYBASE data. The outer PROC SQL query retrieves data from the view descriptor; the subquery uses a Pass-Through query to retrieve ...

Read this SQL tutorial to learn when to use ... even those that don’t pay us. A simple SELECT statement is the most basic way to query multiple tables. You can call more than one table in ...

Expressions of the form [%sqlf <sql string>] are validated and converted into a function that will execute the query. The generated function will take each named ...

Both of these have roots in early CODASYL specifications. The third sub-language in SQL declares queries, through the SELECT statement and relational joins. The SELECT statement tells the query ...