org.apache.flink.types.Row X X 将结构化类型表示为行。 org.apache.flink.table.data.RowData X X 内部数据结构。 Python: 暂不支持自定义数据类型。 其他数据类型 BOOLEAN BOOLEAN是一个具有(可能)三值逻辑(TRUE、FALSE和UNKNOWN)的布尔类型。 声明方式如下: SQL: - BOOLEAN Java/Scala: Python: RAW RAW...
-- Creating a new table named "test" in the current schema CREATE TABLE test ( -- Defining a column named "id" of the DECIMAL data type, designated as the PRIMARY KEY id DECIMAL PRIMARY KEY, -- Defining a column named "col1" of the BOOLEAN data type col1 BOOLEAN ); CopyExplanatio...
SQL Data Types Each column in a database table is required to have a name and a data type. An SQL developer must decide what type of data that will be stored inside each column when creating a table. The data type is a guideline for SQL to understand what type of data is expected ...
The syntax for SQL Data Types is: CREATETABLEtable_name ( column1_name datatype1, column2_name datatype2, column3_name datatype3, ... ); Here, column1_name,column2_name,column3_name,...are the names of the columns datatype1,datatype2,datatype3,...are the data types such asINT...
InfluxDB Cloud Serverless uses theApache Arrow DataFusionimplementation of SQL. Data types define the type of values that can be stored in table columns. In InfluxDB’s SQL implementation, ameasurementis structured as a table, andtags,fieldsandtimestampsare exposed as columns. ...
In some cases, MySQL may change a string column to a type different from that given in a CREATE TABLE or ALTER TABLE statement. For definitions of character string columns (CHAR, VARCHAR, and the TEXT types), MySQL interprets【ɪnˈtɜːrprəts诠释;说明;把…理解为;领会;口译;】...
Load Data InFile 'C:/Data.txt' Into Table `TableTest` Lines Terminated By '\r\n'; 这个语句,字段默认用制表符隔开,每条记录用换行符隔开,在Windows下换行符为“\r\n” C:/Data.txt 文件内容如下面两行: 1 A 2 B “1”和“A”之间有一个制表符 ...
Table 3-1 Data Types with Different Maximum Sizes in PL/SQL and SQL Data TypeMaximum Size in PL/SQLMaximum Size in SQL CHARFoot 1 32,767 bytes 2,000 bytes NCHARFootref 1 32,767 bytes 2,000 bytes RAWFootref 1 32,767 bytes 2,000 bytesFoot 2 ...
可以通过编写 Transact-SQL 查询编辑表或其数据的定义。 若要以直观方式查看或输入表中的数据,请使用连接的数据库开发中介绍的数据编辑器。 编辑现有表的定义 在“SQL Server 对象资源管理器”中展开 Trade 数据库的“表”节点,然后右键单击 dbo.Suppliers。 选择“视图设计器”以便在表设计器中查看表架构。 为...
有关详细信息,请参阅 SQL Server 2016 improvements in handling some data types and uncommon operations(SQL Server 2016 在处理某些数据类型和不常见操作方面所做的改进)。 STRING_SPLIT 函数不可用。 STRING_SPLIT 函数在兼容性级别 130 或更高级别下可用。 如果数据库兼容性级别低于 130,SQL Server 将无法...