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A relational database management system uses SQL MERGE (also called upsert) statements to INSERT new records or UPDATE or DELETE existing records depending on whether condition matches. It was officially introduced in the SQL:2003 standard, and expanded [ citation needed ] in the SQL:2008 standard.
Using a unique combination of elements from the original SQL INSERT in a subsequent SELECT statement. Using a GUID in the SQL INSERT statement and retrieving it in a SELECT statement. Using the OUTPUT clause in the SQL INSERT statement for MS-SQL Server 2005 and MS-SQL Server 2008. Using an INSERT statement with RETURNING clause for Oracle.
Actual SQL implementations normally use other approaches, such as hash joins or sort-merge joins, since computing the Cartesian product is slower and would often require a prohibitively large amount of memory to store. SQL specifies two different syntactical ways to express joins: the "explicit join notation" and the "implicit join notation".
Merge (linguistics), a basic syntactic operation in generative syntax in the Minimalist Program Merger (politics) , the combination of two or more political or administrative entities Merger (phonology) , phonological change whereby originally separate phonemes come to be pronounced exactly the same
The Coachella Valley Invitational will include nearly half of the teams in Major League Soccer and the National Women's Soccer League as the preseason event continues to get bigger and bigger.
By Jody Godoy (Reuters) -A U.S. judge blocked the pending $25-billion merger of U.S. grocery chains Kroger and Albertsons on Tuesday, in a win for the Federal Trade Commission that Kroger has said ...
The Raiders travel to GEHA Field at Arrowhead Stadium to take on the Chiefs. Chiefs vs. Raiders weather updates According to AccuWeather , it's mostly sunny, with a high o f 40 degrees at kickoff ...
Mail merge consists of combining mail and letters and pre-addressed envelopes or mailing labels for mass mailings from a form letter. [1]This feature is usually employed in a word processing document which contains fixed text (which is the same in each output document) and variables (which act as placeholders that are replaced by text from the data source word to word).