code: private static String getColumnName(ResultSetMetaData metaData, int idx, EColumnNameCase nameCase) throws SQLException {
  		String colName = metaData.getColumnName(idx);
  		switch (nameCase) {
  			case LOWER:
  				colName = colName.toLowerCase();
  				break;
  			case UPPER:
  				colName = colName.toUpperCase();
  				break;
  		}
  
  		return colName;
  	}
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