MAP_CHARACTERS
Description
MAP_CHARACTERS returns a string with the characters defined in the match string replaced by the corresponding character.
Supported input column types: STRING
Output column type: STRING
Syntax
MAP_CHARACTERS ( table.column, match_string, replace_string )
Match string
A match string may be begin with a ^ to invert the matching characters. The remaining characters either specify single characters or character ranges to remove. A character range is specified by the the lower and upper character, separated by dash (-).
NULL handling
If the value is NULL, the result is NULL as well. Additionally, strings with broken unicode characters at the end are mapped to NULL.
Examples
[1] Swap ',' and '.'. | ||||||||||||||
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[2] Replace numbers by alphanumeric characters. | ||||||||||||||
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