Mysql 计数(不同(在(';A';,';B';)中时的大小写)
大家好,我想知道是否有人可以在以下方面提供帮助:Mysql 计数(不同(在(';A';,';B';)中时的大小写),mysql,Mysql,大家好,我想知道是否有人可以在以下方面提供帮助: SELECT HOST_ORDER_NO, EARLIEST_PICK_DATE, PRODUCT_NO, PRODUCT_NUM_PARTS, PRODUCT_WHS_LOCATION, COUNT(DISTINCT(CASE WHEN LEFT(PRODUCT_WHS_LOCATION,1) IN ('A','B','C','K','M','N') THEN 'BULK' WHEN LEFT(PRODUC
SELECT
HOST_ORDER_NO,
EARLIEST_PICK_DATE,
PRODUCT_NO,
PRODUCT_NUM_PARTS,
PRODUCT_WHS_LOCATION,
COUNT(DISTINCT(CASE
WHEN LEFT(PRODUCT_WHS_LOCATION,1) IN ('A','B','C','K','M','N') THEN 'BULK'
WHEN LEFT(PRODUCT_WHS_LOCATION,1) IN ('D','E','F') THEN 'TEN'
WHEN LEFT(PRODUCT_WHS_LOCATION,1) IN ('G','H','I','J','L') THEN 'TENSMALL'
ELSE 'SIP' END) AS 'ZONE',
MAX(COLLATION_INDICATOR),
COLLATION_GROUP_ID,
CASE WHEN COUNT(HOST_ORDER_NO)=1 THEN 'SingleOrder' ELSE 'MultiItem' END AS 'OrderType',
COUNT(*) AS 'ItemsInOrder',
YEARWEEK
FROM wk19
WHERE YearWeek = '201717'
GROUP BY HOST_ORDER_NO
HAVING OrderType = 'MultiItem'
ORDER BY HOST_ORDER_NO, COLLATION_GROUP_ID, MAX(COLLATION_INDICATOR);
我的错误是case station我希望能够看到订单来自仓库中的多少不同区域。该语句的其余部分工作正常,但如果我需要更深入地了解它,我可以做更多的工作。您的case
表达式只是缺少括号。在distinct
之后不需要paren,因此:
COUNT(DISTINCT CASE WHEN LEFT(PRODUCT_WHS_LOCATION,1) IN ('A','B','C','K','M','N') THEN 'BULK'
WHEN LEFT(PRODUCT_WHS_LOCATION,1) IN ('D','E','F') THEN 'TEN'
WHEN LEFT(PRODUCT_WHS_LOCATION,1) IN ('G','H','I','J','L') THEN 'TENSMALL'
ELSE 'SIP'
END) AS ZONE,
一句忠告:字符串和日期只能使用单引号。列别名不能使用单引号。可以添加db模式吗?为什么列名都是大写的?这是db管理员学习时从一个非常旧的表中得到的