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PLSQL

PL/SQL Operator Precedence

PLSQL

PLSQL Introduction Advantages of PL/SQL PL/SQL Environment Basic Syntax PL/SQL Identifiers PL/SQL Comments PL/SQL Numeric Data types and Subtypes PL/SQL Boolean Data types. PL/SQL Datetime and interval Types PL/SQL Large Object (LOB) Data Types PL/SQL User-Defined Subtypes. PL/SQL Variables Initializing variables in PL/SQL PL/SQL constants and Literals PL/SQL Literals PL/SQL Operators PL/SQL Operator Precedence PL/SQL CONDITIONS PL/SQL Loops PL/SQL Strings PL/SQL ARRAYS PL/SQL PROCEDURES Parts of PL/SQL Subprogram PL/SQL Functions PL/SQL CURSORS PL/SQL Records PL/SQL Exceptions PL/SQL Triggers PL/SQL Packages PL/SQL Collections PL/SQL Transactions PL/SQL DATE and TIME PL/SQL DBMS output

PL/SQL Operator Precedence

< PL/SQL Operators

PL/SQL CONDITIONS >

This term determines the grouping of the terms in an expression. This shows how an expression is evaluated. Certain operators will have higher precedence than others, like Multiplication operator has higher precedence than the addition operator. 

Let us see an example:

Y = 5 + 2 * 3

In the above equation Y is assigned 11, not 21. Since, * has higher precedence than +. So, it first gets multiplied with 2*3 and then adds into 5.

However, operators with the highest precedence appear at the top of the table, those with the lowest precedence appear at the bottom. And then within the expression, higher precedence operators will be evaluated first.

The precedence of the operators goes like as follow: =, <, >, <=, >=, <>, !=, ~=, ^=, IS NULL, LIKE, BETWEEN, IN.

Operator

Operation

**

Exponentiation

+, -

Identity, negation

*, /

Multiplication, division

+, -, ||

Addition, subtraction, concatenation

NOT

Logical negation

AND

conjunction

OR

inclusion

< PL/SQL Operators

PL/SQL CONDITIONS >

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PLSQL Introduction Advantages of PL/SQL PL/SQL Environment Basic Syntax PL/SQL Identifiers PL/SQL Comments PL/SQL Numeric Data types and Subtypes PL/SQL Boolean Data types. PL/SQL Datetime and interval Types PL/SQL Large Object (LOB) Data Types PL/SQL User-Defined Subtypes. PL/SQL Variables Initializing variables in PL/SQL PL/SQL constants and Literals PL/SQL Literals PL/SQL Operators PL/SQL Operator Precedence PL/SQL CONDITIONS PL/SQL Loops PL/SQL Strings PL/SQL ARRAYS PL/SQL PROCEDURES Parts of PL/SQL Subprogram PL/SQL Functions PL/SQL CURSORS PL/SQL Records PL/SQL Exceptions PL/SQL Triggers PL/SQL Packages PL/SQL Collections PL/SQL Transactions PL/SQL DATE and TIME PL/SQL DBMS output
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