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It's declaring the string as nvarchar data type, rather than varchar. You may have seen Transact-SQL code that passes strings around using an N prefix. This denotes that the subsequent string is in Unicode (the N actually stands for National language character set).
4 lis 2024 · String functions are used to perform an operation on input string and return an output string. Following are the string functions defined in SQL: ASCII(): This function is used to find the ASCII value of a character. Syntax: SELECT ascii('t'); Output: 116; CHAR_LENGTH(): Doesn’t work for SQL Server. Use LEN() for SQL Server.
21 lis 2024 · The real value of output parameters is that they provide a convenient way of defining functions that return several columns. For example, CREATE FUNCTION sum_n_product (x int, y int, OUT sum int, OUT product int) AS 'SELECT x + y, x * y' LANGUAGE SQL; SELECT * FROM sum_n_product(11,42); sum | product -----+----- 53 | 462 (1 row)
30 maj 2023 · Among the most important SQL tools are string functions, which are SQL functions that manipulate strings. We’ll look at five different methods to manipulate strings in this article. You can “edit” string data using a variety of SQL functions. You’ll discover how useful they are as you study SQL.
9 maj 2024 · This article presents SQL string functions you can use to manipulate textual or string values. Follow examples and get recommendations for further reading.
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28 lut 2023 · One of the best ways to learn advanced SQL is by studying example queries. In this article, we'll show 25 examples of advanced SQL queries from medium to high complexity. You can use them to refresh your knowledge of advanced SQL or to review before a SQL interview.
