sql - isnull vs is null - Stack Overflow
Jul 27, 2015 · isnull(name,'') <> :name is shorthand for (name is null or name <> :name) (assuming that :name never contains the empty string, thus why shorthands like this can be …
SQL - Difference between COALESCE and ISNULL? [duplicate]
Sep 16, 2013 · What are the practical differences between COALESCE() and ISNULL(,'')? When avoiding NULL values in SQL concatenations, which one is the best to be used? Thanks!
Which is quicker COALESCE OR ISNULL? - Stack Overflow
Apr 25, 2017 · I understand the difference between these functions but my question is when checking for a single null value would ISNULL be any quicker than using COALESCE? e.g …
What is the PostgreSQL equivalent for ISNULL () - Stack Overflow
Feb 6, 2010 · I don't know what ISNULL you commenters are referring to, but field IS NULL gives a boolean value, while ISNULL in SQL Server operates like COALESCE: it returns one of the …
What does the equals one mean - ISNULL (something, 1) = 1
Nov 15, 2018 · Your query Isnull(something, 1) = 1 is saying to return something which has only null value with 1. I would re-write it as to make it Sargable :
sql - Using IsNull () in a WHERE clause - Stack Overflow
Feb 10, 2017 · Using IsNull () in a WHERE clause Asked 8 years, 11 months ago Modified 6 years, 3 months ago Viewed 11k times
SQL IsNull function - Stack Overflow
Dec 1, 2022 · I saw a sql code using the isNull function in the where clause, similar like below:date>isNull(date1,date2) Can someone explain what this means? Many Thanks! …
What is the Oracle equivalent of SQL Server's IsNull() function?
Aug 19, 2010 · In SQL Server we can type IsNull() to determine if a field is null. Is there an equivalent function in PL/SQL?
MySQL ifNull vs isNull? - Stack Overflow
Jun 14, 2023 · ISNULL() returns boolean value always, and it cannot return NULL. IFNULL() can return a value of any general type (MySQL uses the datatype which is the most common for …
How do I check if a Sql server string is null or empty
SELECT IIF(field IS NULL, 1, 0) AS IsNull The same way you can check if field is empty.