The syntax of textual programming languages is usually defined using a combination of regular expressions (for lexical structure) and Backus–Naur form (for
Regex syntax clarification. Examines all pieces of regex syntax that start with (?.
In a regular expression, parentheses can be used to group regex tokens together and for creating backreferences. Backreferences allow you to reuse part of the regex
Groups the elements of a query result. Can also be used to apply aggregate functions to each group. The grouping operation is based on one or more keys. You can use
Prerequisites. For you to select data from a table or materialized view, the table or materialized view must be in your own schema or you must have the READ or SELECT
An international, multi-disciplinary firm providing an evidence-based approach to the evaluation, strategic design and functional performance of buildings and urban
Note that there are paths through the syntax diagrams that are not allowed in practice. Some examples: A VALUES clause can be the first element in a compound SELECT
The SQL GROUP BY Statement. The GROUP BY statement is often used with aggregate functions (COUNT, MAX, MIN, SUM, AVG) to group the result-set by one or more columns.
This page provides the Group Policy Administrative Template ADMX schema files.