我假设Col1的数据类型不是整数或数字，而是字符串类型，例如text或varchar，并且似乎值中包含一些空格。我...
我假设Col1的数据类型不是整数或数字，而是字符串类型，例如text或varchar，并且似乎值中包含一些空格。我...
-- Calculate a sum based on time periods in CASE statement SELECT [U_CHAINNAME] AS 'CHAIN NAME', DMDUNIT, MIN(DMDPostDate) AS 'DMDPostDate', CASE WHEN MIN(DMDPostDate) BETWEEN MIN(DMDPostDate) AND DATEADD(DAY, +56,DATEDIFF(DAY,0,MIN(DMDPostDate))) THEN SUM([HistoryQuantity]) END AS...
意思为:如果 expr1 是TRUE (expr1 <> 0 and expr1 <> NULL),则 IF()的返回值为expr2; 否则返回值则为 expr3。 IF() 的返回值为数字值或字符串值,具体情况视其所在语境而定。 2、CASE WHEN THEN MySQL的case和java中的switch…case类似,但是它有两种语法: 1> 一种是像Java的switch … case一样,...
1.2 Understanding the DISTINCT statement The DISTINCT statement is used to eliminate duplicate records from a result set, ensuring only unique values are returned. It is often used incombination with other SQL statements to manipulate and analyze data effectively. 1.3 Unpacking the CASE WHEN statement...
SqlStorage SqlSyncInfo SqlSyncLogType SqlSyncMessageType SqlSyncPending SqlSystem SqlTraceCategory SSRSReportAutoDesignNode SSRSReportConceptNode SSRSReportDesignNode SSRSReportPrecisionDesignNode Statement StatementType StaticTextStyle StatusBarStyle Subquery SubscriberAccessLevel SubscriptionRole SysActiveTempTable Sy...
format an date diff expression to hours and minutes Format Date/Time field to HH:MM:SS Format File Name in EMAIL Data Driven Subscription Format for negative values in parentheses Format Number in SSRS Format SMALLDATETIME in SELECT statement Format text to ProperCase or TitleCase - Reporting Se...
1. 'mycount' and 'mysum' will come from alias cus, 2. alias 'cus' will be grouped based on agent_code, 3. customer and alias 'cus' will inner joined based on the same agent_code, the following SQL statement can be used :
NULLIF_FUNC , CASE_FUNC , YEAR_FUNC , YEARWEEK_FUNC , MAKEDATE_FUNC , MAKETIME_FUNC , MONTH_FUNC , MONTHNAME_FUNC , DAY_FUNC , DAYNAME_FUNC , TO_DAYS_FUNC , TO_SECONDS_FUNC , DATE_FUNC , HOUR_FUNC , MINUTE_FUNC , SECOND_FUNC , MICROSEC...
Your MTDWages data is unnormlized, but I'm guessing that you know that and are not in a ...