Replaces single characters in a string.
CONVERT charsout TO charsin IN string
||One or more characters to be replaced. Any expression that resolves to a valid string or numeric.
||The character or characters to be inserted in place of the corresponding characters in charsout. Any expression that resolves to a valid string or numeric.
||The string in which character substitutions are made. An expression that resolves to a valid string. string may be a dynamic array. string accepts a single dynamic array reference (A<i>), a single substring reference (A[s,l]), or a substring reference nested inside a dynamic array reference (A<i>[s,l]).
statement edits the value of string
by replacing all instances of single characters in charsout
with single characters from charsin
performs a character-for-character substitution. Matching of characters is case-sensitive.
To replace all instances of a character in a string with another character, specify the character to be replaced in charsout
and the replacement character in charsin
. For example, to replace all instances of the # character with the * character in mystring
: CONVERT "#" TO "*" IN mystring
To replace all instances of a list of single characters with corresponding other single characters, specify those characters to be replaced in charsout
and the corresponding replacement characters in charsin
. For example, to replace all instances in mystring
of the each lowercase letter a, b, c, and d with the corresponding uppercase letter: CONVERT "abcd" TO "ABCD" IN mystring
To both replace some single characters and remove others, specify those characters to be replaced or removed in charsout
. First specify those to be replaced, then those to be removed. Specify the corresponding replacement characters in charsin
, and nothing for the characters to be removed. For example, to replace all instances of + with &, and to remove all instances of # in mystring
: CONVERT "+#" TO "&" IN mystring
The value of charsout
can be a string or a numeric. If numeric, the value is converted to canonical form (plus sign, leading and trailing zeros removed) before performing the CONVERT
contains more characters than charsin
, the unpaired characters are deleted from string
. If charsin
contains more characters than charsout
, the unpaired characters are ignored and have no effect.
performs single character one-for-one substitution for all instances in a string. The CHANGE
function performs substring replacement, and can specify how many instances to replace and where to begin replacement.
statement and the CONVERT
function perform the same operation, with the following difference: the CONVERT
statement changes the supplied string; the CONVERT
function returns a new string with the specified changes and leaves the supplied string unchanged.
The following example illustrates use of the CONVERT
statement in converting a string to a dynamic array by replacing the # character with a Value Mark level delimiter character:
cities="New York#Chicago#Boston#Los Angeles"
CONVERT "#" TO CHAR(253) IN cities