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

Teradata Vantage™ - SQL Functions, Expressions, and Predicates

Product
Advanced SQL Engine
Teradata Database
Release Number
16.20
Published
March 2019
Language
English (United States)
Last Update
2020-03-25
dita:mapPath
xzf1512079057909.ditamap
dita:ditavalPath
TD_DBS_16_20_Update1.ditaval
dita:id
kby1472250656485

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.