CREATE TABLE tab2 AS tab1 WITH DATA; 输出: BEGIN CREATE TABLE tab2 ( LIKE tab1 INCLUDING ALL EXCLUDING PARTITION EXCLUDING RELOPTIONS ); INSERT INTO tab2 SELECT * FROM tab1 MINUS SELECT * FROM tab2; END ; / 输入:
Select * from table_1 whereCHARACTERS(first_name)>5 Select * from tbale_1 whereCHARACTERS( TRIM(frist_name) )>5 24. trim 去掉字符数据前端和后端的字符 select trim (' abc ') ===》 abc select trim(both 'a' from 'aabacdea') ===》bacde 去掉首尾指定字符 select trim(leading 'a' fro...
SELECT * FROM OPERATOR (File_Reader[1]); ); (3) Data Conversions 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_Secu...
28、AR(20)PRIMARY INDEX (Emp_no);Statement 1SELECT *FROMEmp2WHEREEmp_no = 1234;Statement 2SELECT *FROMEmp2WHEREEmp_no = 1234;Case 2Results in Full Table ScanResults in unnecessary conversion 19 6/15/2021目标列的选择 减少目标列,可以少消耗SPOOL空间,从而提高SQL的效率 当系统任务繁忙,系统内存...
问如何在teradata中创建临时表EN版权声明：本文内容由互联网用户自发贡献，该文观点仅代表作者本人。本站...
o use of CREATE TABLE AS o correctly written SELECT statement o use of ANSI MERGE INTO and UPDATE (upsert processing) o change a user’s role o use a locking modifier in a view or macro o IN and NOT IN logical predicate o explicit and implicit data type conversion ...
Select to use a DSN to connect to the database. By default, this option is set to Yes. To use a DSN connection, you must also specify the ODBC data source name. If you set this option to No, you must also specify the Database server name, Database name, and Port number for a...
CREATE multiset TABLE Customer_N AS Customer with no data; INSERT INTO Customer_N SELECT Credit_Limit * 1.20 FROM Customer ; DROP TABLE Customer ; RENAME TABLE Customer_N TO Customer ; CREATE multiset TABLE Trans_N as Trans with no data; INSERT INTO Trans_N SELECT * FROM Trans WHERE Trans...
原地址:http://blog.chinaunix.net/uid-22953591-id-2600054.html Teradata join1.SELECT Statement ANSI Join Syntax版本V2R2以后,Teradata支持ANSI join语法及外连接:SELECT colname [, colname , …]FROM tabname [aname][IN tables Teradata 转载 精选 jch2012 2015-09-14 11:23:04 2429阅读 teradata...
To retrieve data types of view columns, Microsoft Purview issues a prepare statement for select * from <view> for each of the view queries and parse the metadata that contains the data type details for better performance. It requires the SELECT data permission on views. If the permission is ...