本文为您介绍如何使用实时计算日期函数WEEK。

语法

BIGINT WEEK(DATE date)
BIGINT WEEK(TIMESTAMP timestamp)

入参

参数 数据类型
date DATE
timestamp TIMESTAMP

功能描述

计算指定日期在一年中的第几周，周数取值区间1~53。

示例

  • 测试数据
    dateStr(VARCHAR) date1(DATE) ts1(TIMESTAMP)
    2017-09-15 2017-11-10 2017-10-15 00:00:00
  • 测试语句 
    SELECT WEEK(TIMESTAMP '2017-09-15 00:00:00') as int1,
 WEEK(date1) as int2,
 WEEK(ts1) as int3,
 WEEK(CAST(dateStr AS DATE)) as int4
FROM T1;
  • 测试结果
    int1(BIGINT) int2(BIGINT) int3(BIGINT) int4(BIGINT)
    37 45 41 37