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				@@ -292,7 +292,10 @@ class Sql 
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				             $sql .= 'instr('.$key.','.$index.')'.' > 0'; 
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				         } elseif ($symbol == 'group') { 
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				             $value = ','.$value.','; 
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				-            $sql .= 'instr(concat(",",'.$key.',","),'.$index.')' . ' > 0'; 
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				+            $sql .= 'instr(concat(",",'.$key.',","),'.$index.')' . ' = 1'; 
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				+            //$sql .= 'FIND_IN_SET("'.$index.'", '.$key.') = 1'; 
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				+        } elseif ($symbol == 'JSON_CONTAINS') { 
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				+            $sql .= 'JSON_CONTAINS('.$key.', "'.$index.'", "$")'; 
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				         } elseif ($symbol == 'between') { 
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				             $state && $bind[$index.'_e'] = $value[1]; 
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				             $value = $value[0]; 
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