The boolean data type that is common in other programming languages is not always available in SQL. PostgreSQL has a boolean data type, and other database vendors allow for other methods for capturing the true/false values used for booleans. If you want to get an easy reference PDF for all of the major SQL vendors, get the SQL Cheat Sheets ...
publicstructSqlBoolean : IComparable, IEquatable<System.Data.SqlTypes.SqlBoolean>, System.Data.SqlTypes.INullable, System.Xml.Serialization.IXmlSerializable 继承 Object ValueType SqlBoolean 注解 任何非零值都解释为 1。 SqlBoolean结构和标准布尔值之间的主要区别在于,如果标准布尔值有两个可能的值,true和fals...
类型:Microsoft.SqlServer.Management.Smo. . :: . .SqlSmoObject ASqlSmoObjectobject that specifies the parent that owns theColumnobject. name 类型:System. . :: . .String AStringvalue that specifies the name of the column. dataType 类型:Microsoft.SqlServer.Management.Smo. . :: . .DataType ...
Boolean data type The Boolean data type represents the values of true, false, and unknown. Boolean constants TRUE, FALSE, and UNKNOWN represent the corresponding Boolean truth values. ON and OFF are synonyms for TRUE and FALSE. UNKNOWN is identical to the NULL constant. When performing comparison...
String columnName= columnsResultSet.getString("COLUMN_NAME");intsqlType = columnsResultSet.getInt("DATA_TYPE");//此处拿到mysql返回的字段类型String typeName= columnsResultSet.getString("TYPE_NAME");intsize = columnsResultSet.getInt("COLUMN_SIZE");booleannullable = 1 == columnsResultSet.getInt...
CREATETABLEMySQLBOOL(boolean_colBOOLEAN, bool_colBOOL);Code language:SQL (Structured Query Language)(sql) As stated earlier, the BOOL and BOOLEAN data types are synonyms for TINYINT(1), so the generated columns would have the data type as TINYINT(1). Check below – ...
-- 复合类型包含:PL/SQL记录、PL/SQL表 -- 1.标量类型(scalar)==>常用类型,数据库中的预定义类型的变量 -- 定义标量的语法:variable_NAME data_TYPE,其中variable_NAME是变量名,data_TYPE是PL/SQL中预定义的类型 -- 定义变量示例 -- 定义一个变长字符串 ...
Boolean data type (PostgreSQL documentation) Oracle built-in data types (Oracle documentation) pgAdmin (pgAdmin website) SQL Developer (Oracle website) Tutorials and videos Getting Started with AWS DMS Getting Started With Amazon RDS Introduction to AW...
Retrieves anISystemDataTypeobject that has the specified data type specification and maximum storage size (max) setting. 命名空间:Microsoft.SqlServer.Management.SqlParser.MetadataProvider 程序集:Microsoft.SqlServer.Management.SqlParser(在 Microsoft.SqlServer.Management.SqlParser.dll 中) ...
public class SqlBoolean extends System.ValueType implements System.Data.SqlTypes.INullable, System.IComparable 公共构造函数 复制 public SqlBoolean( boolean value ); public SqlBoolean( int value ); 公共属性 复制 public ubyte get_ByteValue();public boolean get_IsFalse();public final boolean ge...