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10 sty 2012 · The BEGIN ... END construct is separate from the IF. It binds multiple statements together as a block that can be treated as if they were a single statement. Hence BEGIN ... END can be used directly after an IF and thus the whole block of code in the BEGIN .... END sequence will be either executed or skipped.
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.
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.
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.
Standard SQL Functions Cheat Sheet. CASE WHEN. The basic version of . CASE WHEN. checks if the values are equal (e.g., if. fee is equal to 50, then 'normal' is returned). If there isn't a matching value in the CASE WHEN, then the ELSE value will be returned (e.g., if fee is equal to 49, then 'not available' will show up. SELECT CASE fee WHEN 50 ...
12 wrz 2022 · Learn how to build conditional logic when writing SQL code using IF, BEGIN, END, ELSE, and ELSEIF logic.
SQL statements are the means by which programs and users access data in an Oracle database. Table 1–1 shows each SQL statement and its related syntax. Refer to Chapter 5, "Subclauses" for the syntax of the subclauses found in the following table. See Also: Oracle Database SQL Reference for detailed information about Oracle SQL