Preface
The Transformation Language
Constants
Operators
Variables
Dates
Functions
- Function Categories
  - Aggregate Functions
  - Aggregate Functions and Nulls
    - Filter Conditions
  - Binary Functions
  - Character Functions
  - Conversion Functions
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  - Encoding Functions
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  - Scientific Functions
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- ABORT
- ABS
- ADD_TO_DATE
- AES_DECRYPT
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- ASCII
- AVG
- BINARY_COMPARE
- BINARY_CONCAT
- BINARY_LENGTH
- BINARY_SECTION
- CEIL
- CHOOSE
- CHR
- CHRCODE
- COMPRESS
- CONCAT
- CONVERT_BASE
- COS
- COSH
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- CRC32
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- DATE_DIFF
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- ERROR
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- LAG
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- LN
- LOG
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- MAKE_DATE_TIME
- MAX (Dates)
- MAX (Numbers)
- MAX (String)
- MD5
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- METAPHONE
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- MIN (Numbers)
- MIN (String)
- MOD
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- PMT
- POWER
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- RATE
- REG_EXTRACT
- REG_MATCH
- REG_REPLACE
- REPLACECHR
- REPLACESTR
- REVERSE
- ROUND (Dates)
- ROUND (Numbers)
- RPAD
- RTRIM
- SETCOUNTVARIABLE
- SET_DATE_PART
- SETMAXVARIABLE
- SETMINVARIABLE
- SETVARIABLE
- SHA256
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- SIN
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- SQRT
- STDDEV
- SUBSTR
- SUM
- SYSTIMESTAMP
- TAN
- TANH
- TIME_RANGE
- TO_BIGINT
- TO_CHAR (Dates)
- TO_CHAR (Numbers)
- TO_DATE
- TO_DECIMAL
- TO_FLOAT
- TO_INTEGER
- TRUNC (Dates)
- TRUNC (Numbers)
- UPPER
- VARIANCE
Creating Custom Functions
Custom Function API Reference

Transformation Language Reference

10.5.6
- 10.5.7
- 10.5.1
- 10.5
- 10.4.0

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CHOOSE

Chooses a string from a list of strings based on a given position. You specify the position and the value. If the value matches the position, the

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returns the value.

Syntax

CHOOSE( index, string1 [, string2, ..., stringN] )

The following table describes the arguments for this command:

Argument	Required/ Optional	Description
index	Required	Numeric datatype. Enter a number based on the position of the value you want to match.
string	Required	Any character value.

Return Value

The string that matches the position of the index value.

NULL if no string matches the position of the index value.

Example

The following expression returns the string ‘flashlight’ based on an index value of 2:

CHOOSE( 2, 'knife', 'flashlight', 'diving hood' )

The following expression returns NULL based on an index value of 4:

CHOOSE( 4, 'knife', 'flashlight', 'diving hood' )

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Table of Contents

Transformation Language Reference

Transformation Language Reference

CHOOSE

CHOOSE

Syntax

Return Value

Example