17.10 - Order of Evaluation - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - SQL Functions, Expressions, and Predicates

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1145-171K
Language
English (United States)

The following table lists the precedence of operations in arithmetic expressions.

Precedence Operation
Highest + operand   (unary plus)

- operand    (unary minus)

Intermediate operand ** operand     (exponentiation)
operand * operand     (multiplication)

operand / operand     (division)

operand MOD operand     (modulo operator)

operand + operand    (addition)

operand - operand    (subtraction)

In general, the order of evaluation is:

  1. Operations enclosed in parentheses are performed first.
  2. When no parentheses are present, operations are performed in order of precedence.
  3. Operators of the same precedence are evaluated from left to right.

The Optimizer may reorder evaluations based on associative and commutative properties of the operations involved.