What is the result, when NULL is compared with NULL?
Answers were Sorted based on User's Feedback
Answer / kmbkrishnan
if we check a Null value with another Null value as equal,
the result will be false.
|Is This Answer Correct ?||43 Yes||8 No|
Answer / anil kumar abbireddy
NOT EQUAL AND AGAIN ANSWER IS NULL
|Is This Answer Correct ?||14 Yes||2 No|
Answer / affan shemle
It is absolutely perfect to compare NULL with NULL. It
yields the result NULL. For those who are saying the result
is FALSE they are taking the answer from IF THEN ELSE. In
all the above answers supported by IF Statement there is a
catch. The result of IF is a Boolean. A Boolean can hold
TRUE, FALSE or NULL. So when you compare NULL vs NULL as a
condition of IF THEN, it returns NULL so the controller goes
to ELSE skipping the IF. Makes sense???
|Is This Answer Correct ?||13 Yes||1 No|
Answer / pavan_1981
i dont know how u can compare a null value with another
null value.i dont find any operator for doing that.
|Is This Answer Correct ?||15 Yes||6 No|
Answer / talent pool
NULL Is An Unknown Value
So We Couldn't Compare it With Other One.This Is Pure
declare @d int
Set @d =null
declare @r int
Print 'Summa Vilayadatha'
|Is This Answer Correct ?||8 Yes||1 No|
Answer / a.jyothsna
One null value is not equal to another null value.
|Is This Answer Correct ?||7 Yes||1 No|
Answer / guest
The answer is NULL vs NULL = FALSE
|Is This Answer Correct ?||9 Yes||5 No|
Answer / kirankumar.vangeti
Null is neither equal to null nor it is not equal to null.
Any comparison to null is evaluated to null.
|Is This Answer Correct ?||3 Yes||0 No|
Answer / brahma
Null means unknown values, but do not compare both null
|Is This Answer Correct ?||2 Yes||0 No|
name 3 ways to get an accurate count of the number of records in a table? : Sql dba
IN A TABLE HAVE ONE COLUMN PRIMARY KEY..IT WILL NOT ALLOWS NULL VALUES AND DUPLICATE VALUES..INSTEAD OF PRIMARY KEY WHY CANT WE USE UNIQUE AND NOT NULL.THESE TWO ALSO DOESNT ACCEPT NULL VALUES IN NOT NULL AND UNIQUE DOESNT ACCEPT DUPLICATE VALUES? SO WHAT IS THE DIFEERENCE BETWEEN(UNIQUE,NOT NULL) AND PRIMARY KEY??????
how can you see all indexes defined for a table? : Sql dba
HOW TO TUNE ORACLE SQL QUERIES GIVE ME STEP BY SREP
How to change sql*plus system settings?
Can we create table in function?
What are the different types of joins and explain them briefly.
what is sql.
What is minus?
what is the difference between the query and corelated query
how many sql dml commands are supported by 'mysql'? : Sql dba
What is trigger in sql?