Method sum

APIJSONORM/src/main/java/apijson/SQL.java:295–297

求和 fun = #SUM @param column @return #functionAs(String, String)

(String column)

	 * @return {@link #functionAs(String, String)}
	 */
	public static String sum(String column) {
		return functionAs(SUM, column);
	}
	/**最大值
	 * fun = {@link #MAX}
	 * @param column