Cách sử dụng SQL Row Value Expressions (English)


In the original SQL standards, SQL-86 and SQL-89, most operations dealt with a single value or a single column in a table row. To operate on multiple values, you had to build complex expressions by using logical connectives.

SQL-92 introduced row value expressions, which operate on a list of values or columns rather than on a single value or column. A row value expression is a list of value expressions that you enclose in...

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