Codeunit data type CompanyProperty data type Cookie data type Database data type DataTransfer data type Date data type DateFormula data type DateTime data type Debugger data type Decimal data type Dialog data type Dictionary data type DotNet data type Duration data type Enum data type Error...
The Variant data type is the data type for all variables that are not explicitly declared as some other type (using statements such as Dim, Private, Public, or Static). The Variant data type has no type-declaration character. A Variant is a special data type that can contain any kind of...
Using variants is slower than using the other fundamental data types (that is, Integer, Long, Single, Double, Date, Object , String, Currency, and Boolean). Each operation involving a Variant requires examination of the vari...
Visual FoxPro and XML Schema Data Type Mapping Character Data Type Currency Data Type Date Data Type DateTime Data Type Double Field Type Float Field Type General Field Type Integer Field Type Logical Data Type Memo Field Type Numeric Data Type Variant Data Type Data Manipulation Data Storage Conta...
Variant Data Type 项目 2008/06/24 Variant is a special data type that can contain any kind of data except fixed-length string data. Variant data can also be the special values Empty, Error, and NULL. This data type is used in extrinsic clients to Visual FoxPro applications because Visual...
Type/Name Size of Data Range 0 (Empty) 0 N/A 1 Null 0 N/A 2 Integer 2 bytes (short) -32768 to 32767 3 Long 4 bytes (long) -2.147E9 to 2.147E9 4 Single 4 bytes (float) -3.402E38 to -1.401E-45 (negative) 1.401E-45 to 3.402E38 (positive) 5 Double 8 bytes (double) -1.79...
Causedby: com.microsoft.sqlserver.jdbc.SQLServerException: The"variant"datatypeisnot supported. 原因是 sql 语句 select 后面有sql_variant类型的属性,在 JDBC 中不支持它。使用sp_columns命令最终查出sys.extended_properties表的value属性的TYPE_NAME是sql_variant类型的,sql 如下: ...
TheVariantdata type has a numeric storage size of 16 bytes and can contain data up to the range of The VarType function defines how the data in aVariantis treated. All variables becomeVariantdata types if not explicitly declared as some other data type. 我以前一直好奇为什么能有什么数据都可以...
CREATE DATABASE test_variant; USE test_variant; CREATE TABLE IF NOT EXISTS github_events ( id BIGINT NOT NULL, type VARCHAR(30) NULL, actor VARIANT NULL, repo VARIANT NULL, payload VARIANT NULL, public BOOLEAN NULL, created_at DATETIME NULL, ...
When handling thesql_variant data type, SQL Server supports implicit conversions of objects with other data types to thesql_variant type. However, SQL Server does not support implicit conversions fromsql_variant data to an object with another data type. ...