Capabilities of theSELECTStatement(SELECT语句的功能) Data retrieval from data base is done through appropriate and efficient use of SQL. Three concepts from relational theory encompass the capability of the SELECT statement: projection, selection, and joining. Projection(投影): A project operation selec...
The focus of this article is maximizing SQL capabilities. It explores a unique approach, using basic syntax to solve complex data scenarios through flexible and divergent data processing thinking. By Lige 1. Preface 1.1 Original Intention Efficiently utilizing MaxCompute (ODPS) SQL and pushing basic ...
The PL/SQL capabilities of each Oracle tool are described in the appropriate tool's documentation.Figure 14-2 illustrates the PL/SQL engine contained in Oracle server.Figure 14-2 The PL/SQL Engine and the Oracle ServerText description of the illustration cncpt070.gifThe program unit is stored...
Although you can protect your Access database by using the Trust Center and by encrypting the database, SQL Server has more advanced security features. Let’s look at three capabilities that stand out for the Access user. For more information, see Securing SQL Server. Databa...
You can now construct code that can handle custom syntax conversions and conversions that weren't previously handled by SSMA. Instructions on how to construct a custom converter are available in this blog post, Extending SQL Server Migration Assistant's conversion capabilities. Download a sample pro...
The capabilities and security of CETAS for serverless pools in Azure Synapse Analytics are different from SQL Server. For more information, see CETAS with Synapse SQL. Transact-SQL syntax conventions Syntax syntaxsql Copy CREATE EXTERNAL TABLE { [ [ database_name . [ schema_name ] . ] | ...
External tables let you query data without first loading it into the database, among other capabilities. See Also: Oracle9i Data Warehousing Guide, Oracle9i Database Administrator's Guide, and Oracle9i Database Utilities for information on the uses for external tables Because external tables have ...
To get an overview of sqlmap capabilities, a list of supported features, and a description of all options and switches, along with examples, you are advised to consult the user's manual. Links Homepage: https://sqlmap.org Download: .tar.gz or .zip Commits RSS feed: https://github.com/...
You can now construct code that can handle custom syntax conversions and conversions that weren't previously handled by SSMA. Instructions on how to construct a custom converter are available in this blog post,Extending SQL Server Migration Assistant's conversion capabilities. ...
Examples of PL/SQL features Examples of PL/SQL features include cursors, embedded PL/SQL and calling a stored procedure. Cursors act as pointers to the context area. A PL/SQL block uses a cursor to control the context area. Cursors can remain unnamed or anonymous, but named cursors make re...