非常复杂的结果集合，Mapper文件可能长这个样子，（注意当我们在select语句中使用B.title as blog_title，...
假設今天是 2022-05-20,這樣會找出 002 與 003 這兩筆資料,其中 today 也可以自訂為別的日期。 用MySQL 的 CURDATE() function 來判斷 找今天之前的資料 SELECT order_num WHERE date < CURDATE() ; MySQL 的 CURDATE() 函數可以找出今天的日期,預設格式為 0000-00-00,所以這段 sql 語法可以找出今...
它们由嵌入式SQL操作设置。也可以使用SET命令直接设置它们，或使用NEW命令将其重置为未定义。像任何局部变...
calculate current Quarter/Review Period and previous four Quarter/Review Periods based on todays date. Calculate Elapsed Time Between Dates Excluding Weekends Calculate stock ageing with SQL query Calculate the date of the Next Sunday of current week Calculate the number of workdays in a month Calcu...
然而今天在使用 SELECT INTO FROM 备份mysql数据表的时候,运行相关 sql 语句的时候却一直返回 [Err] 1327 - Undeclared variable: ... 这种错误,实在不解,经过查询相关资料才知道,原来 mysql 数据库是不支持 SELECT INTO FROM 这种语句的,但是经过研究是可以通过另外一种变通的方法解决这个问题的,下面就来说说解决...
Oracle笔记 三、function、selectScott表下有这么几个常用的表,而且还带有数据。分别是emp、dept、salgrade;1、查看表结构用descdescemp;2、空表dual,最常用的空表,如:select2*4fromdual;selectsysdatefromdual;3、双引号能保持格式 如:selectsysdate “toDay 日期”fromdual;4、||字符串连接 ...
select @today = convert(varchar(10),getdate(),120) then use the parameter in the where clause AND T.TimeStarted like @today+'%' or just use AND T.TimeStarted like (select convert(varchar(10),getdate(),120))+'%' Hi, Would the following not work: ...
DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET STOP=1; OPEN game_id; FETCH game_id INTO $gameId; WHILE STOP <> 1 DO SET @today = CONCAT(date(NOW())," 00:00:01"); IF EXISTS(SELECT id FROM tbgames_box_activity WHERE id = $gameId AND addTime<@today AND isOpen=1 LIMIT 1)...
class ' + @TableName + ' {';SELECT@Result = @Result + ' /// <summary> /// ' + CAST(t...'THEN'string'WHEN'date'THEN'DateTime'WHEN'datetime'THEN'DateTime'WHEN'datetime2'THEN mysql根据一个时间查询出所在时间段 今天的数据:selectname,count(1)from (select(casewhentoday='08'then'08:00...
When I get TODAY in SELECT in PB, it returns 1900/1/1 date var Select TODAY() Into :var From DUMMY But when I assign to variable TODAY(), it works as expected date var var = today() I use MS SQL Server 2016 and PowerBuilder 12.5. I've supposed that the problem is in dif...