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存储在目录中并由目录标识符(例如cat.db.MyType)标识的类型,这些类型与SQL标准定义的结构化类型相同。 匿名定义的、未注册的类型(通常是通过反射提取得到的),这些类型由实现类(例如com.myorg.model.MyType)标识。在以编程方式定义表程序时,可以重用现有的JVM类而无需手动定义数据类型的模式。 已注册的结构化类型...
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. SQL and Arrow da...
Namespace: Microsoft.Data.SqlClient Assembly: Microsoft.Data.SqlClient.dll Package: Microsoft.Data.SqlClient v6.0.2 Gets or sets the SqlDbType of the parameter. C# 复制 public override System.Data.DbType DbType { get; set; } Property Value DbType One of the SqlDbType values. The ...
Data types can be classified into groups of related data types. Within such groups, an order of precedence exists in which one data type is considered to precede another data type. This precedence enables Db2 to support the promotion of one data type to
SqlDbType Fields Expand table NameValueDescription BigInt0 Int64. A 64-bit signed integer. Binary1 Arrayof typeByte. A fixed-length stream of binary data ranging between 1 and 8,000 bytes. Bit2 Boolean. An unsigned numeric value that can be 0, 1, ornull. ...
SqlDbType Enum Definition Namespace: System.Data Assemblies: netstandard.dll, System.Data.Common.dll Specifies SQL Server-specific data type of a field, property, for use in aSqlParameter. C#Copy publicenumSqlDbType Inheritance Object ValueType ...
MongoDB: A document-oriented database that is great for storing JSON-like documents with dynamic schemas. Redis: A key-value store often used for caching and as a fast in-memory datastore. Cassandra: A column-family store known for its scalability and fault tolerance. Neo4j: A graph databas...
sqldbchar[n] } 1<=n<=16 350 SQLUDF_LONGVARG Not null-terminated, variable-length double-byte character string DBCLOB(n) struct { sqluint32 length; sqldbchar data[n]; } 1<=n<=1 073 741 823 SQLUDF_DBCLOB Not null-terminated varying length character string with 4-byte string length...
Extremely powerful multi-platform db client. Spanning many years as a consultant at many different client sites, I have been able to connect to all different database types (DB2, Oracle, MySQL, SqlServer, etc) using DbVisualizer. Verified user. ...