Go: Oracle Stored procedure NOTE 2----operators and expressions

Source: Internet
Author: User
Operators and expressions
Relational operations
= equals
<>,!= Not equal to
< less than
> Greater than
<= less than or equal to
>= greater than or equal to general operation + Plus
-Minus
* Multiply
/except
: = Assignment Number
= = Relationship Number
.. Range
|| The use of the character connection assignment number is
Varible: =value;
Database assignments can be done by select, where the assigned variables are defined first
V_name varchar2 (20);
Select name into V_name from table; Use of scopes
1..8 = 1 to 8 logical operation is null empty value
Between between the two
In within a column of values
and Logic and
or logical OR
Not logical non-

Go: Oracle Stored procedure NOTE 2----operators and expressions

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