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Power Query is built on what was then [when?] a new query language called M.It is a mashup language (hence the letter M) designed to create queries that mix together data. It is similar to the F Sharp programming language, and according to Microsoft it is a "mostly pure, higher-order, dynamically typed, partially lazy, functional language."
To determine whether a query expression is safe we will derive two types of information from a query. The first is whether a variable-column pair t.a is bound to the column of a relation or a constant, and the second is whether two variable-column pairs are directly or indirectly equated (denoted t.v == s.w).
The Table<T> encapsulates the data in the table, and implements the IQueryable<T> interface, so that the expression tree is created, which the LINQ to SQL provider handles. It converts the query into T-SQL and retrieves the result set from the database server. Since the processing happens at the database server, local methods, which are not ...
To further illustrate, imagine a relational model with two tables: a people table (which has a person_id and person_name column) and a friend table (with friend_id and person_id, which is a foreign key from the people table). In this case, searching for all of Jack's friends would result in the following SQL query.
The title of the world’s oldest person now belongs to Inah Canabarro Lucas, who is also 116 years old. She was born on June 8, 1908, in Rio Grande do Sul, Brazil. She was born two weeks after ...
The Brisk It Origin 580 is a pellet smoker, designed for cooking at low temperatures for long periods of time. It has a temperature range of 165 to 500°F, and unlike gas or charcoal grills, you ...
A pair of Saturday NFL games drew a larger viewing audience than college football for the rollout of the sport's 12-team playoff. The playoff game between SMU and Penn State averaged 6.4 million ...
The WHERE clause then filters to only keep patterns where the Movie node in the match clause has a year property that is less than the value of the parameter passed in. In the return, the query specifies to output the movie nodes that fit the pattern and filtering from the match and where clauses.