WebExplanation. This formula is based on the IF function, configured with a simple logical test, a value to return when the test is TRUE, and a value to return when the test is FALSE. In … Web9 feb. 2024 · Although COALESCE, GREATEST, and LEAST are syntactically similar to functions, they are not ordinary functions, and thus cannot be used with explicit VARIADIC array arguments. 9.18.1. CASE. The SQL CASE expression is a generic conditional expression, similar to if/else statements in other programming languages: CASE WHEN …
NULLIF (Transact-SQL) - SQL Server Microsoft Learn
WebThe IFNULL () function returns a specified value if the expression is NULL. If the expression is NOT NULL, this function returns the expression. Syntax IFNULL ( expression, … WebThe IFNA function returns the value you specify if a formula returns the #N/A error value; otherwise it returns the result of the formula. Syntax IFNA (value, value_if_na) The IFNA … harvard divinity school field education
Null-conditional Operators - Visual Basic Microsoft Learn
Web26 jan. 2015 · If the input reference is null, then the output should be null. Otherwise, the output should be the outcome of accessing a method or property of the input object. I … WebImpala Conditional Functions. Impala supports the following conditional functions for testing equality, comparison operators, and nullity: CASE a WHEN b THEN c [WHEN d THEN e]... [ELSE f] END. Purpose: Compares an expression to one or more possible values, and returns a corresponding result when a match is found. WebThe NULL statement is a no-op: it passes control to the next statement without doing anything. In the body of an IF-THEN clause, a loop, or a procedure, the NULL statement serves as a placeholder. For more information, see "Using the NULL Statement". Syntax Description of the illustration null_statement.gif Usage Notes harvard developing child youtube