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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; -- result: 42.
10 sty 2012 · It has to do with the Normal Form for the SQL language. IF statements can, by definition, only take a single SQL statement. However, there is a special kind of SQL statement which can contain multiple SQL statements, the BEGIN-END block.
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':
12 wrz 2022 · Learn how to build conditional logic when writing SQL code using IF, BEGIN, END, ELSE, and ELSEIF logic.
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Whether you need a quick reference for major SQL concepts before an interview, or you want to level-up your existing SQL skills, our SQL cheat sheet is the ideal starting point. Plus, we’ve broken it down into 11 essential SQL topics to help you get the most from this SQL query cheat sheet.
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> END ELSE BEGIN <execute some different code> END
