Progress
SQL-92
Guide and Reference


PRO_ARR_DESCAPE Function

Removes escape characters from a single element of a character array. PRO_ARR_DESCAPE scans the char_element looking for the separator character ( ; ) or an escape character ( ~ ). The function removes an escape character, when it finds any of these constructs:

char_element

The character representation of an array element, without any leading or trailing separators. Must be data type NVARCHAR or VARCHAR or CHAR.

EXAMPLES

The following example returns the string ’aa;aa’:

PRO_ARR_DESCAPE(’aa~;aa’) ; 

The following example returns the string ’aa~aa’. There is no change, since another special character does not follow the escape character:

PRO_ARR_DESCAPE(’aa~aa’) ; 

The third example returns the string ’aa~;aa’:

PRO_ARR_DESCAPE(’aa~~;aa’) ; 

NOTE: char_element should not be the name of an array column, since the column contains true separators which would be destroyed by this function.


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