Output:The resultant output of this select clause will be as mentioned below: The name of the new column created using the CASE statement will be ‘Grade’ as we have aliased the column using the as clause after
TPT permits conversion in the APPLY statement. Data can be converted to an alternate data type, or be changed to/from a null APPLY ( 'INSERT INTO Customer VALUES (:Customer_Number, :Last_Name, :First_Name, :Social_Security);') TO OPERATOR (Load_Customer [1]) SELECT Customer_Number ,La...
Teradata BTEQ是一种用于Teradata数据库的工具,用于执行SQL查询、导入导出数据和执行数据库管理任务。BTEQ代表Basic Teradata Query,它提供了一种交互式的方式来与Teradata数据库进行通信。 在使用Teradata BTEQ时,条件未按预期工作可能是由以下几个原因引起的: 语法错误:条件未按预期工作可能是由于在SQL查询中存在语法错误...
VARCHARLogTable='Accounts_Load_Log',VARCHARTargetTable='Accounts',INTEGERMaxSessions=8,INTEGERTenacitySleep=1,VARCHARWildCardInsert='N'/*Default*/ /*'Y[es]' = builds an INSERT statement 'N[o]' = (default); you must specify a INSERT ... VALUES statement */);...
INSERT-SELECT Statement INSERT Statement DELETE Statement UPDATE Statement Querying Object File System Data Managing Consumption Using the Consumption Estimates Third Party Applications Protegrity Installation Considerations for Protegrity ESA Server Setting Up the AWS PrivateLink Service Installing...
Teradata - SELECT Statement Logical & Conditional Operators Teradata - SET Operators Teradata - String Manipulation Teradata - Date/Time Functions Teradata - Built-in Functions Teradata - Aggregate Functions Teradata - CASE & COALESCE Teradata - Primary Index Teradata - Joins Teradata - SubQueries Terada...
实用教程Teradata陆世潮2008年9月第1页,共81页。问题总结常见问题分类:表属性不对: Set Multiset问题:INSERT操作慢主索引PI设置不合理问题1:数据倾斜度大,空间爆满。问题2:JOIN操作,数据需要重分布。 分
SELECTEmployeeNo,NetPayFROMSalaryWHERENetPay=(SELECTMAX(NetPay)FROMSalary); When this query is executed, it produces the following output. *** Query completed. One row found. 2 columns returned. *** Total elapsed time was 1 second. EmployeeNo NetPay --- --- 103 83000 Print Page Previous...
Teradata优化器未得到足够的统计信息 --Collect Statistics 4.Multiple Insert/select -- Multi-Statement Insert/Select * 并行插入空表不记录Transient Journal * 充分利用Teradata向空表Insert较快以及并行操作的特性如: ? 现状 INSERT INTO ${TARGETDB}.DES (Party_Id ,Party_Name ... ) SELECT … FROM SRC...
o use of Intervals in expressions o extended GROUP BY operators o TOP N vs. SAMPLE o effect of dropping or altering a partition o use of CREATE TABLE AS o correctly written SELECT statement o use of ANSI MERGE INTO and UPDATE (upsert processing) ...