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PRO_ARR_DESCAPE function
Note Each char_expression and the result can contain multi-byte characters. The start_pos
argument specifies the character position, not a byte position. Character comparisons are case
sensitive and are determined by sort weights in the collation table in the database.
114
Compatibility
Progress extension
PRO_ARR_DESCAPE function
Syntax
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:
• Escape character followed by a separator character ( ~; )
• Escape character followed by another escape character ( ~~ )
• Escape character followed by a NULL terminator ( ~\0 )
PRO_ARR_DESCAPE( 'char_element' ) ;
char_element
The character representation of an array element, without any leading or trailing
separators. Must be data type NVARCHAR, 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') ;
This 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 that would be destroyed by this function.