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Below is a set of truth tables showing the logic operations for 3-valued logic.
| A AND B | True | False | Null |
|---|---|---|---|
| True | True | False | Null |
| False | False | False | False |
| Null | Null | False | Null |
| A OR B | True | False | Null |
|---|---|---|---|
| True | True | True | True |
| False | True | False | Null |
| Null | True | Null | Null |
| A | NOT A |
|---|---|
| True | False |
| False | True |
| Null | Null |
Returns true if x is true or y is true.
Examples
Integer s=4,d=8;
Integer f=6;
if ( f>s || f>d )
{
return "abc";
}
if ((@"Annual Sales" > 50000) ||(@"Annual Sales"<0)) then
"Customer needs attention"
else
"Normal customer"If( ! isNull(@customerId) && ! isNull(@country)){
If(@customerId > 10 || @country == ‘USA’){
Integer newId = @customerId + 1;
}
}
Else{
// Some error processing logic here
}
Returns true if x is true and y is true.
Examples
Integer s=4,d=8;
Integer f=6;
if ( f>s && f<d )
{
return "abc";
}
if ((@"Annual Sales" <3000) && (@Customers_Country=="USA")) then
"Customer is in the USA and Annual Sales is less than 3000"
else
"Others" Returns true if x is false.
Example
The return value of the following statement is def.
Integer s=4, d=8;
Integer f=6;
if ( ! ( f>s ) )
return "abc"
else
return "def"