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Since 2010, Emirates is the largest Boeing 777 operator, with 152 aircraft; [17] the carrier began phasing out older −200s, −200ERs and −300s in February 2011. [18] Other primary operators are United Airlines (96), Qatar Airways (81), Air France (70), American Airlines (67), and Cathay Pacific (65). As of November 2011, 62 airline ...
Emirates is the largest airline operator as of 2018, [183] and is the only customer to have operated all 777 variants produced, including the -200, -200ER, -200LR, -300, -300ER, and 777F. [ 2 ] [ 252 ] The 1,000th 777 off the production line, a -300ER set to be Emirates' 102nd 777, was unveiled at a factory ceremony in March 2012.
A derived table is the use of referencing an SQL subquery in a FROM clause. Essentially, the derived table is a subquery that can be selected from or joined to. The derived table functionality allows the user to reference the subquery as a table. The derived table is sometimes referred to as an inline view or a subselect.
The title of largest 777 operator has changed hands during the aircraft's history. Singapore Airlines' order for up to 77 aircraft on November 15, 1995 constituted the largest-ever wide-body aircraft purchase at the time. [1]
SQL is a well known query language and data manipulation language for relational databases; XQuery is a query language for XML data sources; XPath is a declarative language for navigating XML documents; YQL is an SQL-like query language created by Yahoo! Search engine query languages, e.g., as used by Google [5] or Bing [6]
A common table expression, or CTE, (in SQL) is a temporary named result set, derived from a simple query and defined within the execution scope of a SELECT, INSERT, UPDATE, or DELETE statement. CTEs can be thought of as alternatives to derived tables ( subquery ), views , and inline user-defined functions.
illustration of sea salt with arrow pointing at nori (seaweed) flakes. (TODAY Illustration / Getty Images)
Conjunctive queries also correspond to select-project-join queries in relational algebra (i.e., relational algebra queries that do not use the operations union or difference) and to select-from-where queries in SQL in which the where-condition uses exclusively conjunctions of atomic equality conditions, i.e. conditions constructed from column ...