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SELECT is the most complex statement in SQL, with optional keywords and clauses that include: The FROM clause, which indicates the table(s) to retrieve data from. The FROM clause can include optional JOIN subclauses to specify the rules for joining tables. The WHERE clause includes a comparison predicate, which restricts the rows returned by ...
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.
In linguistic typology, active–stative alignment (also split intransitive alignment or semantic alignment) is a type of morphosyntactic alignment in which the sole argument ("subject") of an intransitive clause (often symbolized as S) is sometimes marked in the same way as an agent of a transitive verb (that is, like a subject such as "I" or "she" in English) but other times in the same way ...
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...
SQL:2011 or ISO/IEC 9075:2011 (under the general title "Information technology – Database languages – SQL") is the seventh revision of the ISO (1987) and ANSI (1986) standard for the SQL database query language. It was formally adopted in December 2011. [1] The standard consists of 9 parts which are described in detail in SQL.
A predicative phrase is switched from its default postverbal position to a position preceding the verb, which causes the subject and the finite verb to invert. For example: [1] a. A lamp lay in the corner. b. In the corner lay a lamp. – Locative inversion c. *In the corner lay it. – Locative inversion unlikely with a weak pronoun subject a.
Reserved words in SQL and related products In SQL:2023 [3] In IBM Db2 13 [4] In Mimer SQL 11.0 [5] In MySQL 8.0 [6] In Oracle Database 23c [7] In PostgreSQL 16 [1] In Microsoft SQL Server 2022 [2]
V1 (verb-initial word order) is a type of structure that contains the finite verb as the initial clause element. In other words the verb appears before the subject and the object of the sentence. (a) Max y-il [s no' tx;i;] [o naq Lwin]. (Mayan) PFV A3-see CLF dog CLF Pedro 'The dog saw Pedro.'