你好我正在尝试基于我们的一个数据块的标准进行选择。他们可以选择所有选择,并且无法使其工作或运行得更好。 我怎么会有现在这一点,但它似乎真的笨重,有时我觉得它不拿起一些值 where SLRRDEF_RDEF_CODE = (select CASE
WHEN :parm_dd_rdef.RDEF_DESC like '-All-' Then 'A100'
WHEN
我需要帮助,因为它在Oracle SQL Developer中一直给出相同的错误。 Error starting at line : 15 in command - CREATE TABLE B_BOOKING (
booking_number int NOT NULL PRIMARY KEY,
date_booked date,
performance_order i
下面我有此查询: Select b.b_id as Business_id, b.business_name, Average_Rating, b.review_count AS Review_count
FROM (
SELECT b.b_id AS Business_id, AVG(r.rating) AS Average_Rating
FROM Business b