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In SQL:1999 a recursive (CTE) query may appear anywhere a query is allowed. It's possible, for example, to name the result using CREATE [ RECURSIVE ] VIEW . [ 16 ] Using a CTE inside an INSERT INTO , one can populate a table with data generated from a recursive query; random data generation is possible using this technique without using any ...
In a SQL database query, a correlated subquery (also known as a synchronized subquery) is a subquery (a query nested inside another query) that uses values from the outer query. This can have major impact on performance because the correlated subquery might get recomputed every time for each row of the outer query is processed.
This clause currently is supported by CA DATACOM/DB 11, IBM DB2, SAP SQL Anywhere, PostgreSQL, EffiProz, H2, HSQLDB version 2.0, Oracle 12c and Mimer SQL. Microsoft SQL Server 2008 and higher supports FETCH FIRST, but it is considered part of the ORDER BY clause. The ORDER BY, OFFSET, and FETCH FIRST clauses are all required for this usage.
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Transact-SQL is central to using Microsoft SQL Server. All applications that communicate with an instance of SQL Server do so by sending Transact-SQL statements to the server, regardless of the user interface of the application. Stored procedures in SQL Server are executable server-side routines. The advantage of stored procedures is the ...
Typically multiple examinations were required to obtain either a hardware centered certification such as the MCSE (Microsoft Certified Systems Engineer) or a more software orientated offering such as the MCSD (Microsoft Certified Solutions Developer). The process of earning certification has changed multiple times since its initial inception.
Microsoft Office 2019 was officially released on September 24, 2018, for Microsoft Windows and macOS, following a preview phase earlier that year. Office 2019 was designed for users who preferred a perpetual license model, offering a one-time purchase option, in contrast to the subscription-based Office 365 (now Microsoft 365). While it ...
These free Microsoft Office Web Apps give you many of the same basic features of the offline, and expensive, Office 2010 suite including the "Office Ribbon" interface that makes it simpler to find ...