SQL data types define the type of value that can be stored in a table column. For example, if you want a column to store only integer values, you can define its data type as INT. SQL data types can be broadly divided into the following categories. Numeric data types such as: INT, ...
SET(val1, val2, val3, ...)A string object that can have 0 or more values, chosen from a list of possible values. You can list up to 64 values in a SET list Numeric Data Types Data typeDescription BIT(size)A bit-value type. The number of bits per value is specified insize. Th...
Lookup Wizard : Allow you to type a list of choices that may then be selected from a drop-down menu. Storage : 4 Byte. MySQL Data Types - Text Types CHAR(size) :Holds a string of a specific length (can contain letters, numbers, and special characters). In parenthesis, the fixed si...
A data type is a set of representable values. Every representable value belongs to at least one data type and some belong to several data types. SQL supports three sorts of data types: predefined data types, constructed types, and user-defined types. Predefined data types are sometimes called ...
USE DATABASE USE SCHEMA ADD ARCHIVE ADD FILE ADD JAR LIST ARCHIVE LIST FILE LIST JAR GET PUT INTO REMOVE INSERT INTO INSERT OVERWRITE DIRECTORY INSERT OVERWRITE DIRECTORY 使用 Hive 格式 LOAD DATA EXPLAIN CLUSTER BY 子句 通用數據表表達式 通用數據表表達式 DISTRIBUTE BY 子句 GROUP BY 子句 HAVING 子...
Book List Contents Index Master Index Feedback Previous Next View PDF Like—but oh how different! —William Wordsworth Every constant, variable, and parameter has adatatype(ortype), which specifies a storage format, constraints, and valid range of values. PL/SQL provides many predefined datatypes...
SQL20034NThe data typelist-type-nameis not included in a structured data type hierarchy that includes the data typeleft-type-nameof the left operand of the TYPE predicate. Explanation All the data types listed in the TYPE predicate must be included in a data type hierarchy that includes the ...
結構 StructType 具名清單 list(type='struct', fields=fields)。 fields 是 StructField 的 Seq。 (4) StructField 此欄位資料類型的實值型別(例如,StructField 的整數資料類型為 IntegerType) list(name=name, type=dataType, nullable=[nullable])。(4) 變體 不支援 不支援 不支援 物件 不支援 不...
Name ListPrice --- --- Long-Sleev 31.2437 Long-Sleev 32.4935 Long-Sleev 49.99 E. 将 CAST 与 LIKE 子句结合使用此示例将 money 列SalesYTD 值转换为数据类型 int,然后转换为数据类型 char(20),以便 LIKE 子句可以使用。SQL 复制 USE AdventureWorks...
Unseparated list of formats [yy]yyMMdd yyyy[MMdd] Thedatedata can be specified with four, six, or eight digits. A six-digit or eight-digit string is always interpreted asymd. The month and day must always be two digits. A four-digit string is interpreted as the year. ...