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Oracle CASE expression allows you to add if-else logic to SQL statements without having to call a procedure. The CASE expression evaluates a list of conditions and returns one of the multiple possible results. You can use a CASE expression in any statement or clause that accepts a valid expression.
It’s a single-page PDF file that lists all of the Oracle SQL functions and their parameters. Save it, or print it out and put it on your desk. You’ll never have to worry about the parameters of each function again! Download the file here: Oracle SQL Function Cheat Sheet.
Conversion Functions. BIN_TO_NUM ( expression_list ) CAST ( expression AS type_name ) CAST ( MULTISET (subquery) AS type_name ) COALESCE ( expr1, expr2, [expr...]
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.
This document provides a cheat sheet of Oracle SQL functions organized into categories such as aggregate functions, numeric and math functions, conversion functions, and date and time functions. It lists over 100 functions with brief descriptions of what each function does.
13 Σεπ 2024 · This cheat sheet is designed to save time and increase productivity for developers working in Oracle, BigQuery, or similar database environments.
In a simple CASE expression, Oracle Database searches for the first WHEN... THEN pair for which expr is equal to comparison_expr and returns return_expr. If none of the WHEN... THEN pairs meet this condition, and an ELSE clause exists, then Oracle returns else_expr. Otherwise, Oracle returns null.
