AI代码解释 1ALTERFUNCTION[dbo].[Fun_GetStrArrayLength]2(3@originalStrVARCHAR(1024),--要分割的字符串4@splitVARCHAR(10)--分隔符号5)6RETURNSINT7AS8BEGIN9DECLARE@locationINT;--定义起始位置10DECLARE@startINT;--定义从第几个开始11DECLARE@lengthINT;--定义变量,用于接收计算元素的个数1213SET@originalSt...
创建分区表: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 CREATETABLEpar_table(viewTimeINT,useridBIGINT,page_urlSTRING,referrer_urlSTRING,ipSTRINGCOMMENT'IP Address of the User')COMMENT'This is the page view table'PARTITIONEDBY(dateSTRING,posSTRING)ROWFORMATDELIMITED‘\t’FIELDSTERMINATEDBY'\...
lpad(str, len[, pad]) - Returns str, left-padded with pad to a length of len. If str is longer than len, the return value is shortened to len characters or bytes. If pad is not specified, str will be padded to the left with space characters if it is a character string, and wi...
excel.Add(newExtension.ExcelHeader(1).Add("表名").Add(tableInfo.TabModel.TabName));//标识表名//中文头Extension.ExcelHeader cnHeader =newExtension.ExcelHeader(2);//英文头Extension.ExcelHeader enHeader =newExtension.ExcelHeader(3);varexcludeFields =newList<string>() {//模板忽略字段"CreateTime...
--Create the partition scheme and function, align this to the number of CPU cores 1:1 up to 32 core computer-- so for below this is aligned to 16 core systemCREATEPARTITIONFUNCTION[pf_hash16] (tinyint)ASRANGELEFTFORVALUES(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15);C...
LEFT [ OUTER ] 指定在结果集中包括左表中所有不满足联接条件的行,除了由内部联接返回所有的行之外,还将另外一个表的输出列设置为 NULL。 RIGHT [ OUTER ] 指定在结果集中包括右表中所有不满足联接条件的行,除了由内部联接返回所有的行之外,还将与另外一个表对应的输出列设置为 NULL。
SQLRETURN SQLGetInfo( SQLHDBC ConnectionHandle, SQLUSMALLINT InfoType, SQLPOINTER InfoValuePtr, SQLSMALLINT BufferLength, SQLSMALLINT * StringLengthPtr); 引數 ConnectionHandle [輸入] 連線控制代碼。 InfoType [輸入]信息類型。 InfoValuePtr [輸出]要在其中傳回信息的緩衝區指標。 根據 所要求的 Info...
第一步:SparkSession 的 sql(sqlText: String): DataFrame 为例,描述 SQL 语句的解析过程: def sql(sqlText: String): DataFrame = { Dataset.ofRows(self, sessionState.sqlParser.parsePlan(sqlText)) } 1. 2. 3. 第二步:调用 parse 方法将 SQL 解析为抽象语法树(调用的是SparkSqlParser父类AbstractSq...
sizeof(smallBuffer), // The size of the buffer. &cbLeft); // How much data we can get. } while ( retcode2 == SQL_SUCCESS_WITH_INFO ); } } return TRUE; } 使用案例:以串流輸入/輸出參數的形式傳送及接收大型物件 當預存程序將大型物件當作輸入/輸出參數傳遞,從而在資料庫中來回...
Create a query to remove last two characters of a string Create a view and change the data types of some variables Create a writable view in SQL DB create an index on just the date part of a datetime field Create Database Failed - Primary file must be at least 3 MB ... create dynam...