// 定义一个有事件时间属性的 table source public class UserActionSource implements StreamTableSource<Row>, DefinedRowtimeAttributes { @Override public TypeInformation<Row> getReturnType() { String[] names = new String[] {
ODBC and OLE DB users can configure this in ODBC data sources, or with connection attributes or properties set by the application. Data compression System tables can't be enabled for compression. When you are creating a table, data compression is set to NONE, unless specified otherwise. If ...
ODBC and OLE DB users can configure this in ODBC data sources, or with connection attributes or properties set by the application. Data compression System tables can't be enabled for compression. When you are creating a table, data compression is set to NONE, unless specified otherwise. If ...
haskey(data) #检查是否有Key attributes(data) key()可以告诉你,数据集中的Key是哪几个变量? haskey()输出结果为:true/false ——— 二、数据筛选 1、列筛选 .() 代码语言:javascript 代码运行次数:0 运行 AI代码解释 from_dplyr = select(tb, ID) from_data_table = tb[,"ID"] from_data_table...
一、Table & SQL Connectors 1、概述 2、支持的外部连接 3、使用示例:kafka 4、Transform table connector/format resources 5、Schema Mapping 6、Metadata 7、Primary Key 8、Time Attributes 9、Proctime Attributes 10、Rowtime Attributes 11、完整示例 1)、建表 2)、测试数据 3)、展示结果 12、SQL Types 二...
The CREATE TABLE statement defines a table. The definition must include its name and the names and attributes of its columns. The definition can include other attributes of the table, such as its primary key and its table space.
C. Use CETAS to change column attributes Applies to: Azure Synapse Analytics and Analytics Platform System This example uses CETAS to change data types, nullability, and collation for several columns in the FactInternetSales table. SQL Copy -- Example is based on AdventureWorks CREATE EXTERNAL ...
The account of the user who created the view, in 'user_name'@'host_name' format. SECURITY_TYPE The view SQL SECURITY characteristic. The value is one of DEFINER or INVOKER. CHARACTER_SET_CLIENT The session value of the character_set_client system variable when the view was created....
ALTER TABLE PARTITION modifies table partitioning, including adding, deleting, splitting, merging partitions, and modifying partition attributes.The name of the added par
(Users can change visibility at run time with the Show/hide columns tool.) If the data source supports editing, check the Allow editing check box to allow users who have access to the data to edit attributes by double-clicking in the table cells. You can choose which fields are editable....