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SINGLE ROW FUNCTIONS

This resource, led by Prof. Carmen Popescu from Oracle Academy, provides a concise overview of essential numeric functions used in Oracle SQL for data manipulation. Key functions include ABS for absolute values, CEIL and FLOOR for rounding, MOD for finding remainders, POWER for exponentiation, and ROUND and TRUNC for numerical adjustments. Each function is illustrated with practical examples to ensure clear understanding and effective application. This guide is ideal for SQL learners seeking to enhance their numeric computation skills.

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SINGLE ROW FUNCTIONS

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  1. SINGLE ROW FUNCTIONS 1. NUMBERS MANIPULATION Prof. Carmen Popescu Oracle Academy Lead Adjunct

  2. ABS • ABS(n) • returns the absolute value of n • ABS(10) = 10 • ABS(-5.8) = 5.8

  3. CEIL, FLOOR • Ceil(nr) • FLOOR(nr) CEIL returns the smallest integer that is greater or equal to nr FLOOR returns the largest integer that is smaller or equal to nr

  4. CEIL, FLOOR Example • CEIL(nr) • CEIL(2) = 2 • CEIL(1.3) = 2 • CEIL(1.8) = 2 • CEIL(-2.3) = -2 • FLOOR(nr) • FLOOR(2) = 2 • FLOOR(1.3) = 1 • FLOOR(1.8) = 1 • FLOOR(-2.3) = -3

  5. MOD • MOD(n1,n2) MOD divides n1 by n2 and tells the remainder • MOD(100,10) = 0 • MOD(22,23) = 22 • MOD(-30.23,7) = -2.23 • 7*(-4) + (–2.23) = - 30.23 • MOD(4.1,0.3) = 0.2 • 0.3* 13 + 0.2 = 4.1

  6. POWER • POWER(n1,n2) • POWER(3,2) = 9 • POWER(3,3) = 27 • POWER(3,1.086)=3.29726371 • POWER(64,0.5) = 8

  7. ROUND • ROUND(value,precision) • ROUND(55.5) = 56 • ROUND(33.3) = 33 • ROUND(-55.5) = -56 • ROUND(-33.3) = -33 • ROUND(45.926,2) = 45.93 • ROUND(45.923,2) = 45.92 • ROUND(45.926,-1) = 50 • ROUND(42.926,-1) = 40 • ROUND(45.926,-2) = 0 • ROUND(65.926,-2) = 100

  8. TRUNC • TRUNC(value,precision) • TRUNC(55.5) = 55 • TRUNC(33.3) = 33 • TRUNC(-55.5) = -55 • TRUNC(-33.3) = -33 • TRUNC(45.926,2) = 45.92 • TRUNC(45.923,2) = 45.92 • TRUNC(45.926,-1) = 50 • TRUNC(42.926,-1) = 40 • TRUNC(45.926,-2) = 0 • TRUNC(65.926,-2) = 0

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