@@ -361,7 +361,7 @@ discard block  | 
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| 361 | 361 | *  | 
                                                        
| 362 | 362 | * @param string $column  | 
                                                        
| 363 | 363 | * @param mixed $type One of IQueryBuilder::PARAM_*  | 
                                                        
| 364 | - * @return string  | 
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| 364 | + * @return QueryFunction  | 
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| 365 | 365 | */  | 
                                                        
| 366 | 366 |  	public function castColumn($column, $type) { | 
                                                        
| 367 | 367 | return new QueryFunction(  | 
                                                        
@@ -372,7 +372,7 @@ discard block  | 
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| 372 | 372 | /**  | 
                                                        
| 373 | 373 | * Returns a query function to find the number of characters in a string column  | 
                                                        
| 374 | 374 | * @param string $column  | 
                                                        
| 375 | - * @return string  | 
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| 375 | + * @return QueryFunction  | 
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| 376 | 376 | */  | 
                                                        
| 377 | 377 |  	public function length($column) { | 
                                                        
| 378 | 378 | $column = $this->helper->quoteColumnName($column);  |