sql = ''' select * from tables_names -- hdfs下的表名 where 条件判断 ''' Data = DB.impala_query(sql) -- 是DataFrame格式 **注意：**DB是自己写的脚本文件 改变列的
SQL Server Date函数 下面列举出了SQL Server中最重要的内建日期函数: 1、GETDATE() 返回当前日期和时间 语法: GETDATE() 1. 下面是SELECT语句: SELECT GETDATE() AS DateTime 1. 结果如下所示: 注释:上面的时间是精确到毫秒。 2、DATEPART() 返回日期/时间的单独部分 语法: DATEPART(datepart,date) 1. d...
Another method for searching between two date values in SQL is to use the BETWEEN operator. The BETWEEN operator filters results within a specified range, including the start and end values. For instance, the following query can be used to find all records between 2009-01-01 and 2009-12-31...
SELECT ProductID,Name,Color FROM Production.Product WHERE Color IN ('Silver', 'Black', 'Red') -- Wildcard Usage -- % Represents a string of zero or more characters. -- _ Represents a single character. -- [] Specifies a single character, from a selected range or list. -- [^] Spec...
Create SQL string to select date between two given datesUwe Block
Looping through month in a range of dates? Looping through SELECT statement results to assign to variable losing digits when divide two values with decimal data type LTRIM and RTRIM does not remove spaces. making sql server database read -write from read only Making the INSERT script Re-runnab...
SQL Copy SELECT FirstName, LastName, BaseRate, BaseRate * 40 AS GrossPay FROM DimEmployee ORDER BY LastName; C. Use DISTINCT with SELECT The following example uses DISTINCT to generate a list of all unique titles in the DimEmployee table. SQL Copy SELECT DISTINCT Title FROM DimEmployee...
Hello! I am trying to create an SQL query through the Select By Attribute window on a date field that will select the current date and everything two years prior. I can't seem to find anything online where this has been completed successfully. I am using ArcMap...
This is used to display records that fall at the top or bottom of a range that is specified by an ORDER BY clause. This works in both SQL Server and Access SELECT TOP 5 CompanyName FROM CUSTOMERS ORDER BY CompanyName ASC TOP PERCENT ...
Specifies a range of values NOT to include. Used with the AND clause between the beginning and ending values. NOT IN Provides a list of values for which NOT to return rows for. NOT LIKE Tests character string, excluding those with pattern matches. SOME When used with a comparison opera...