TANH 오라클 함수 [Oracle, Pandas, R Prog, Dplyr, Sqldf, Pandasql, Data.Table, DuckDB]

* 파이썬 & R 패키지 호출 및 예제 데이터 생성 링크

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[ TANH Oracle Function ]

 

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TANH함수는 지정한 인수 n의 쌍곡선 탄젠트(hyperbolic tangent)를 반환한다.

 

• 함수 설명 : TANH 오라클 함수 링크

 

 

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1. Oracle(오라클)

 

TANH() 함수

 

Oracle Programming

SELECT TANH(.5) "Hyperbolic tangent of .5" 
FROM   DUAL;

 

Results

         Hyperbolic tangent of .5
------------------------------------------
.462117157260009758502318483643672548721

 

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2. Python Pandas(파이썬)

 

math.tanh() 함수

 

Python Programming

import math
math.tanh(.5)

 

Results

0.46211715726000974

 

 

 

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3. R Programming (R Package)

 

TANH() 함수

 

R Programming

%%R

tanh(.5)

 

Results

[1] 0.4621172

 

 

 

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4. R Dplyr Package

 

TANH() 함수

 

R Programming

%%R

emp %>%
  dplyr::mutate(tanh_value = tanh(deptno/10)) %>%
  head()

 

Results

# A tibble: 6 x 9
  empno ename  job        mgr hiredate     sal  comm deptno tanh_value
  <dbl> <chr>  <chr>    <dbl> <date>     <dbl> <dbl>  <dbl>      <dbl>
1  7369 SMITH  CLERK     7902 1980-12-17   800    NA     20      0.964
2  7499 ALLEN  SALESMAN  7698 1981-02-20  1600   300     30      0.995
3  7521 WARD   SALESMAN  7698 1981-02-22  1250   500     30      0.995
4  7566 JONES  MANAGER   7839 1981-04-02  2975    NA     20      0.964
5  7654 MARTIN SALESMAN  7698 1981-09-28  1250  1400     30      0.995
6  7698 BLAKE  MANAGER   7839 1981-03-01  2850    NA     30      0.995

 

 

 

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5. R sqldf Package

 

TANH() 함수

 

R Programming

%%R

sqldf(" select tanh(.5) tanh_val ")

 

 

 

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6. Python pandasql Package

 

TANH() 함수

 

Python Programming

ps.sqldf(" SELECT tanh(.5) tanh_val ")

 

 

 

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7. R data.table Package

 

TANH() 함수

 

R Programming

%%R

DT          <- data.table(emp)
dept_DT     <- data.table(dept)

DT[,tanh_value := tanh(deptno/10)][1:10, ]

 

Results

    empno  ename       job  mgr   hiredate  sal comm deptno tanh_value
 1:  7369  SMITH     CLERK 7902 1980-12-17  800   NA     20  0.9640276
 2:  7499  ALLEN  SALESMAN 7698 1981-02-20 1600  300     30  0.9950548
 3:  7521   WARD  SALESMAN 7698 1981-02-22 1250  500     30  0.9950548
 4:  7566  JONES   MANAGER 7839 1981-04-02 2975   NA     20  0.9640276
 5:  7654 MARTIN  SALESMAN 7698 1981-09-28 1250 1400     30  0.9950548
 6:  7698  BLAKE   MANAGER 7839 1981-03-01 2850   NA     30  0.9950548
 7:  7782  CLARK   MANAGER 7839 1981-01-09 2450   NA     10  0.7615942
 8:  7788  SCOTT   ANALYST 7566 1982-12-09 3000   NA     20  0.9640276
 9:  7839   KING PRESIDENT   NA 1981-11-17 5000   NA     10  0.7615942
10:  7844 TURNER  SALESMAN 7698 1981-09-08 1500    0     30  0.9950548

 

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8. Python Duckdb의 SQL

 

Python Programming

%%sql
  select ((exp((0.5 * 2)) - 1) / (exp((0.5 * 2)) + 1)) As Tanh_func

 

 

Python Programming

duckdb.sql(" select ((exp((0.5 * 2)) - 1) / (exp((0.5 * 2)) + 1)) As Tanh_func ").df()

 

 

Results

   Tanh_func
0   0.462117

 

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Pencil on system of equations ( https://unsplash.com/photos/_zsL306fDck )

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[Oracle, Pandas, R Prog, Dplyr, Sqldf, Pandasql, Data.Table] 오라클 함수와 R & Python 비교 사전 목록 링크

 

오라클 SQL 함수(Oracle SQL Function) 목록 리스트 링크

 

[SQL, Pandas, R Prog, Dplyr, SQLDF, PANDASQL, DATA.TABLE] SQL EMP 예제로 만나는 테이블 데이터 처리 방법 리스트 링크 링크