What is the difference between  and != operators in MySQL?
64531
Should I use != or  for not equal in T-SQL?
95941
sql IN operator
9173
What are the PHP operators "?" and ":" called and what do they do?
152780
what is the difference between null != object and object!=null
123797
Not equal  != operator on NULL
63088
What does the '!!!' syntax mean in javascript?
124650
Is `if (condition = value)` the correct syntax for comparison?
72519
What's the difference between "==" and "=~"?
33772
Is there any difference in equals and == for String variables?
158810
Why does >= return false when == returns true for null values?
120580
What does "=>" mean in PHP?
10298
Difference between == and === in JavaScript
140931
What is the difference between if(!!condition) and if(condition)
158902
What's the difference between where clause and on clause when table left join?
138291
"OR" condition in db_select()
99447
What is the difference between String? and String! (two ways of creating an optional variable)?
29593
What is the "->" PHP operator called?