CFLib.org – Common Function Library Project

UniqueValueList(queryname, columnname[, cs])

Last updated March 27, 2007

author

Nick Giovanni

Version: 1 | Requires: CF5 | Library: DataManipulationLib

Description:
Returns a list of unique values from a query column with the option of case sensitive or not.

Return Values:
Returns a string.

Example:

--Not Case sensitive
#uniqueValueList(queryName, "queryColumn")#

-- Case Sensitive
#uniqueValueList(queryName, "queryColumn", 1)#

Parameters:

Name Description Required
queryname Query to scan. Yes
columnname Column to use. Yes
cs If true, the unique list will check the case of the values. Defaults to false. No

Full UDF Source:

/**
 * Returns a list of unique values from a query column.
 * 
 * @param queryname 	 Query to scan. (Required)
 * @param columnname 	 Column to use. (Required)
 * @param cs 	 If true, the unique list will check the case of the values. Defaults to false. (Optional)
 * @return Returns a string. 
 * @author Nick Giovanni (ngiovanni@gmail.com) 
 * @version 1, March 27, 2007 
 */
function uniqueValueList(queryName, columnName) {
	var cs = 0; 
	var curRow = 1;
	var uniqueList = "";  
	
	if(arrayLen(arguments) GTE 3 AND isBoolean(arguments[3])) cs = arguments[3]; 
	
	for(; curRow LTE queryName.recordCount; curRow = curRow +1){
		if((not cs AND not listFindNoCase(uniqueList, trim(queryName[columnName][curRow]))) OR (cs AND not listFind(uniqueList, trim(queryName[columnName][curRow])))){
			uniqueList = ListAppend(uniqueList, trim(queryName[columnName][curRow]));
		}
	}
	return uniqueList; 
}
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