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                     KeepChar  - script and chart functionON THIS PAGE  
                KeepChar()  returns a string consisting of the first string ,'text', less any of the characters NOT contained in the second string, "keep_chars".
                Syntax:    
                KeepChar( text, keep_chars) 
                Return data type:    string
                Arguments:    
                
                    Arguments 
                     
                    
                     
                    
                    
                        
                     
                    
                        
                            
                                text 
                             
                            The original string. 
                         
                        
                            
                                keep_chars 
                             
                            A string containing the characters in text  to be kept. 
                         
                     
                
 
                Example: Chart expressions 
                        
                             
                            
                             
                            
                            
                                
                             
                            
                                
                                    KeepChar 
 ( 'a1b2c3','123' ) 
                                     
                                    Returns '123'. 
                                 
                                
                                    KeepChar 
 ( 'a1b2c3','1234' ) 
                                     
                                    Returns '123'. 
                                 
                                
                                    KeepChar 
 ( 'a1b22c3','1234' ) 
                                     
                                    Returns '1223'. 
                                 
                                
                                    KeepChar 
 ( 'a1b2c3','312' ) 
                                     
                                    Returns '123'. 
                                 
                             
                        
 
                      
                Example: Load script 
                        T1:
Load 
*, 
keepchar(String1, String2) as KeepChar;  
Load * inline [
String1, String2
'a1b2c3', '123'
]; 
				 
                        Results
                        
                            Qlik Sense  table showing the output from using the KeepChar  function in the load script. 
                             
                             
                             
                            
                                
                                    String1 
                                    String2 
                                    KeepChar 
                                 
                             
                            
                                
                                    a1b2c3 
                                    123 
                                    123