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1 cze 2021 · Standard SQL Functions Cheat Sheet. TEXT FUNCTIONS. CONCATENATION. Use the || operator to concatenate two strings: SELECT 'Hi ' || 'there!'; -- result: Hi there! Remember that you can concatenate only character strings using. ||. Use this trick for numbers: SELECT '' || 4 || 2;
1 cze 2021 · Check the documentation for your specific database. LIKE OPERATOR – PATTERN MATCHING. Use the _ character to replace any single character. Use the % character to replace any number of characters (including 0 characters). Fetch all names that start with any letter followed by. 'atherine': SELECT name. FROM names. WHERE name LIKE '_atherine';
28 lip 2017 · Let's start with a header of procedure or function we are documenting. Standard Header. There is not really something like a standard header, there are a few templates but they really boil down to basically the same. Let's have a look at SQL Server Management Studio standard header:
SQL Handwritten Notes Repository: A collection of PDF notes covering SQL concepts with concise definitions and examples. Explore fundamental commands, date/time functions, joins, and more. Contributions welcome!
1 cze 2021 · Standard SQL Functions Cheat Sheet. TEXT FUNCTIONS. CONCATENATION. Use the || operator to concatenate two strings: SELECT 'Hi ' || 'there!'; -- result: Hi there! Remember that you can concatenate only character strings using. ||. Use this trick for numbers: SELECT '' || 4 || 2;
Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems. Start learning SQL now » Examples in Each Chapter
SQL statements are the means by which programs and users access data in an Oracle database. The sections that follow show each SQL statement and its related syntax.
