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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;
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':
24 maj 2021 · The IF…ELSE structure will execute a certain block of code if a specified condition is TRUE, and a different block of code if that condition is FALSE. Here is the basic layout and syntax of the IF…ELSE structure: IF(<condition is true>) BEGIN. <execute some code>.
created by Tomi Mester. I originally created this cheat sheet for my SQL course and workshop participants.* But I have decided to open-source it and make it available for everyone who wants to learn SQL. It's designed to give you a meaningful structure but also to let you add your own notes (that's why the empty boxes are there).
12 wrz 2022 · Learn how to build conditional logic when writing SQL code using IF, BEGIN, END, ELSE, and ELSEIF logic.
9 maj 2010 · If there are no begin and end statements in sql, the next statement is the only one that gets executed if the if condition is true...in the case below, is there anyway the insert statement will also get executed if the if condition is true? IF (a > 1) . SET @b = 1 + 2. INSERT INTO #F (a, b, c) VALUES (1, 2, 3) sql. t-sql. if-statement.
