Method count

APIJSONORM/src/main/java/apijson/SQL.java:279–281

计数 column = null @return #count(String)

()

	 * @return {@link #count(String)}
	 */
	public static String count() {
		return count(null);
	}
	/**计数
	 * fun = {@link #COUNT}
	 * @param column