Sql 程序集: Mono.Android.dll Java 编程语言中的常量,用于标识泛型 SQL 值 NULL。 [Android.Runtime.Register("NULL")] public const int Null = 0; 字段值 Value = 0 Int32 属性 RegisterAttribute 注解 Java 编程语言中的常量,用于标识泛型 SQL 值 NULL。 适用于 . 的 java.sql.Types.NULL...
命名空间: Microsoft.Spark.Sql.Types 程序集: Microsoft.Spark.dll 包: Microsoft.Spark v1.0.0 表示null 类型。C# 复制 public sealed class NullType : Microsoft.Spark.Sql.Types.DataType继承 Object DataType NullType 构造函数 展开表 NullType() 表示null 类型。 属性 展开表 Json 此数据类型...
SqlHierarchyId.Null Property Reference Feedback Definition Namespace: Microsoft.SqlServer.Types Assembly: Microsoft.SqlServer.Types.dll Package: Microsoft.SqlServer.DacFx v160.6161.0 Gets a SqlHierarchyId with a hierarchy identification of null. C# 複製 public static Microsoft.SqlServer.Types.Sql...
SQL object inheritance is based on a family tree of object types that forms a type hierarchy. The type hierarchy consists of a parent object type, called a supertype, and one or more levels of child object types, called subtypes, which are derived from the parent. Topics: 2.3.1About Inher...
Microsoft Dynamics AX does not support the concept of null values that is available in many other Database Management Systems (DBMS). A field in Microsoft Dynamics AX always has a type and a value. For each data type, however, one value is considered null (for example, when the validateFie...
报错SQL是impala数据源: 在公司内部搭建可视化查询平台执行成功,执行结果截图 下面这个截图是尝试复现问题的SQL,当分母为0.0时,就会出现UDF ERROR: Cannot divide decimal by zero问题。 kudu数据源 另有SQL,相同的报错: ...
Yes/NoA logical field can be displayed as Yes/No, True/False, or On/Off. In code, use the constants True and False (equivalent to -1 and 0).Note:Null values are not allowed in Yes/No fields1 bit Ole ObjectCan store pictures, audio, video, or other BLOBs (Binary Large Objects)up...
Array types and values A user-defined array type is a data type that is defined as an array of elements. A user-defined array type can be either an ordinary array or associative array.Parent topic: Language elements in SQL Related concepts Null values in table columns When to use null or...
In some cases, you can omit checks for null values. A table row or row object cannot be null. A nested table of objects cannot contain an element whose value isNULL. A nested table or array can be null, so you do need to handle that condition. A null collection is different from an...
A character may have zero weights (or an empty weight). In this case, the character is ignorable. Example: "U+0000 NULL" does not have a weight and is ignorable. A character may have one weight. Example:'a'has a weight of0x0E33. ...