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This list includes SQL reserved words – aka SQL reserved keywords, [1] [2] as the SQL:2023 specifies and some RDBMSs have added. ... COLLATE SQL-2023 ...
Collation is the assembly of written information into a standard order. Many systems of collation are based on numerical order or alphabetical order , or extensions and combinations thereof. Collation is a fundamental element of most office filing systems , library catalogs , and reference books .
Beginning MySQL Database Design and Optimization Texas As this table structure consists of a compound primary key , it doesn't contain any non-key attributes and it's already in BCNF (and therefore also satisfies all the previous normal forms ).
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.
The Unicode collation algorithm (UCA) is an algorithm defined in Unicode Technical Report #10, which is a customizable method to produce binary keys from strings representing text in any writing system and language that can be represented with Unicode.
A solution for this issue is to 'salt' the hash. Salting is the process of encrypting more than just the password in a database. The more information that is added to a string that is to be hashed, the more difficult it becomes to collate rainbow tables. As an example, a system may combine a user's email and password into a single hash.
In very early versions of the SQL standard the return code was called SQLCODE and used a different coding schema. The following table lists the standard-conforming values - based on SQL:2011 . [ 1 ] The table's last column shows the part of the standard that defines the row.
Collation (meal), a light meal allowed on days of fasting in some religious traditions; In succession law, collation is an act of estimating the value of the intestate property; In ecclesiastical law, collation is the legal process and ritual act by which a parish priest is appointed to their living, especially in Anglicanism