replacedby the following PostgreSQL query:> > SELECT COALESCE(MAX(id), 0) + 1 from test;> Ummm...did you make a mistakehere? Those statements are> identical... Okay, lets try that again... SELECT IFNULL(MAX(id),
代码语言:javascript 代码运行次数:0 运行 AI代码解释 ---运行下面的sql语句,生成相关的数据库表 # 创建商品表: CREATE TABLE product( pid INT, pname VARCHAR(20), price DOUBLE, category_id VARCHAR(32) ); INSERT INTO product(pid,pname,price,category_id) VALUES(1,'联想',5000,'c001'); INSERT...
6 - access("C"."AUTO_ID"=TO_NUMBER(:B1)) 8 - access("C"."AUTO_ID"=TO_NUMBER(:B1)) 10 - access("C"."AUTO_ID"=TO_NUMBER(:B1)) 12 - access("C"."AUTO_ID"=TO_NUMBER(:B1)) 14 - access("SF"."AUTO_ID"=TO_NUMBER(:B1)) 16 - access("SF"."AUTO_ID"=TO_NUMBER(:B1...
INSERT INTO PSKH_RESULTFLAG(RECORDID,CREATETIME,UPDATETIME)VALUES('29392494-A2BB-4A2D-858D-13DF8746DEB2',NOW(),SYSDATE); 1. 2. 3. 4. 5. 6. 7. 8. 9. 2、人大金仓数据库中判断为空,使用NVL函数,其他数据库使用IFNULL(MYSQL) (1)MYSQL : SELECT IFNULL(MAX(jxkh0510), 0) AS jxkh0...
如果某些订单的总价字段为NULL,我们可以使用IFNULL()函数来处理这些空值。 ```sql SELECT order_id, IFNULL(total_price, 0) AS total_price FROM orders; ``` 在这个例子中,如果某订单的总价字段为NULL,IFNULL()函数会将其替换为0
SELECT lpad( (CAST(IFNULL(MAX(ITEM_ID) , 0) as unsigned int) + 1), 3, '0') AS ITEM_IDFROM REQUEST_MST_ITEMWHERE REQUEST_TYPE = #{requestType}
CREATE PROCEDURE ETL10501(TableStartPointer TIMESTAMP, TableWindowPointer TIMESTAMP) DECLARE RowsExtractedCnt INT; DECLARE RowsInsertedMaxID INT; DECLARE InsertedRowC 浏览0提问于2014-05-14得票数 0 1回答 MySQL IFNULL问题 、 我有一个查询,它包含子查询,如下所示它工作正常,但我希望在成功时返回字符串...
司机接单,乘客上车,若司机接单后又取消了,没有start_time,finish_time为离开时间,使用IFNULL判断 # SELECT city,IFNULL(start_time,finish_time) AS uv_time,-1 AS uv # FROM tb_get_car_record # LEFT JOIN tb_get_car_order # USING (order_id) SELECT city, MAX(uv_cnt) AS max_wait_uv FROM...
lin_zone 0 3924 MySQL greatest()和least()函数与MAX()和MIN()函数 2019-12-25 18:47 − 下面的内容是个人学习记录,来自https://www.yiibai.com/mysql/greatest-least.html。请大佬勿喷,这里是要强调一点东西。 MySQL GREATEST和LEAST函数介绍它跟MAX()与MIN()函数的区别就是,前面是比较多个字段(列)...
| id | name | salary | departmentId | +---+---+---+---+ | 1 | Joe | 70000 | 1 | | 2 | Jim | 90000 | 1 | | 3 | Henry | 80000 | 2 | | 4 | Sam | 60000 | 2 | | 5 | Max | 90000 | 1 | +---+---+---+---+ Department...