Teradata的CREATE TABLE (缩写关键字为CT)语句用于创建表。示例:输入:CREATE TABLE输出:执行CREATE tab2 AS tab1时,从tab1中复制的结构将用于创建表tab2。如果CREATE TABLE语句包含WITH DATA选项,则会将tab1的数据也复制到tab2中。使用CREATE AS时,源
在Teradata 中,CREATE TABLE 语句用于创建一个新的表。其基本格式如下: sql CREATE TABLE table_name ( column1 datatype [constraint], column2 datatype [constraint], ... [PRIMARY KEY (column1, column2, ...)], [UNIQUE (column1, column2, ...)], [FOREIGN KEY (column1, column2, ...) ...
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 Teradata Advanced Teradata - Table Types Teradata - Space Concep...
参数说明 表1 CREATE TABLE PARTITION参数说明 参数 描述 取值范围 IF NOT EXISTS 如果已经存在相同名称的表,不会抛出一个错误,而会发出一个通知,告知表关系已存在。
CREATE[[GLOBAL|LOCAL]{TEMPORARY|TEMP}|UNLOGGED]TABLE[IFNOTEXISTS]table_name{({column_namedata_type[compress_mode][COLLATEcollation][column_constraint[...]]|table_constraint|LIKEsource_table[like_option[...]]}[,...])|LIKEsource_table[like_option[...]]}[WITH({storage_parameter=value}[,.....
CREATEEXTERNALDATASOURCEmydatasourceWITH(TYPE= HADOOP, LOCATION ='hdfs://xxx.xxx.xxx.xxx:8020')CREATEEXTERNALFILEFORMATmyfileformatWITH( FORMAT_TYPE = DELIMITEDTEXT, FORMAT_OPTIONS (FIELD_TERMINATOR ='|') );CREATEEXTERNALTABLEClickStream (urlvarchar(50), event_datedate, user_IPvarchar(50) )WITH...
在云计算领域中,Create table语句是用于创建数据库表的DDL(数据定义语言)语句。如果在大查询的Create table语句中出现DDL错误,可能会导致表的创建失败或表结构不符合预期。 解...
CREATEEXTERNALDATASOURCEmydatasourceWITH(TYPE= HADOOP, LOCATION ='hdfs://xxx.xxx.xxx.xxx:8020')CREATEEXTERNALFILEFORMATmyfileformatWITH( FORMAT_TYPE = DELIMITEDTEXT, FORMAT_OPTIONS (FIELD_TERMINATOR ='|') );CREATEEXTERNALTABLEClickStream (urlvarchar(50), event_datedate, user_IPvarchar(50) )WITH...
Add prefix in data column Add Time in SQL HH:MM:SS to another HH:MM:SS Adding a column to a large (100 million rows) table with default constraint adding a extra column in a pivot table created uisng T-SQL Pivot Table query Adding a partition scheme to an existing table. Adding a ...
When you save the workbook, the data source either becomes a part of the existing data source or is added to your repository, depending on which of the methods you choose. If you paste the data as a data source, the data source is saved with the workbook when you save the workbook as...