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Oracle Differences between NVL and Coalesce - Stack Overflow Are there non obvious differences between NVL and Coalesce in Oracle? The obvious differences are that coalesce will return the first non null item in its parameter list whereas nvl only takes two
what is the difference between NVL2,NULLIF and COALESCE NVL : Converts null value to an actual value NVL2 : If first expression is not null, return second expression If first expression is null, return third expression the first expression can have any data type COALESCE : Return first not null expression in the expression list NULLIF : Compares two expressions and returns null if they are equal,returns the first expression if they are not equal
Qual a diferença entre COALESCE e NVL - Stack Overflow em Português A função NVL é específica do Oracle e só aceita duas expressões como entrada Se a primeira expressão for nula, a função retornará a segunda expressão Caso contrário, será retornada a primeira expressão As expressões de entrada também podem ser de tipos diferentes, caso isso aconteça, será feita uma tentativa de cast implícito, se o cast não for possível será retornado
How to use NVL in PL SQL for Date columns? - Stack Overflow (Using nvl for the names won't match if both the column value and the parameter are null, but that might not be an issue for you ) You also have a name clash with id - make the parameter names different to the column names, e g with a prefix; and why are the from to parameters strings rather than dates?