利用SQL生成模型实体类

DECLARE @TableName sysname = 'TableName'; DECLARE @Result VARCHAR(MAX) = 'public class ' + @TableName + ' {'; SELECT @Result = @Result + ' /// <summary> /// ' + CAST(t.Summary AS VARCHAR(MAX)) + ' /// </summary> public ' + ColumnType + NullableSign + ' ' + ColumnName + ' { get; set; } ' FROM ( SELECT REPLACE(col.name, ' ', '_') ColumnName, col.column_id ColumnId, CASE typ.name WHEN 'bigint' THEN 'long' WHEN 'binary' THEN 'byte[]' WHEN 'bit' THEN 'bool' WHEN 'char' THEN 'string' WHEN 'date' THEN 'DateTime' WHEN 'datetime' THEN 'DateTime' WHEN 'datetime2' THEN 'DateTime' WHEN 'datetimeoffset' THEN 'DateTimeOffset' WHEN 'decimal' THEN 'decimal' WHEN 'float' THEN 'float' WHEN 'image' THEN 'byte[]' WHEN 'int' THEN 'int' WHEN 'money' THEN 'decimal' WHEN 'nchar' THEN 'char' WHEN 'ntext' THEN 'string' WHEN 'numeric' THEN 'decimal' WHEN 'nvarchar' THEN 'string' WHEN 'real' THEN 'double' WHEN 'smalldatetime' THEN 'DateTime' WHEN 'smallint' THEN 'short' WHEN 'smallmoney' THEN 'decimal' WHEN 'text' THEN 'string' WHEN 'time' THEN 'TimeSpan' WHEN 'timestamp' THEN 'DateTime' WHEN 'tinyint' THEN 'byte' WHEN 'uniqueidentifier' THEN 'Guid' WHEN 'varbinary' THEN 'byte[]' WHEN 'varchar' THEN 'string' ELSE 'UNKNOWN_' + typ.name END ColumnType, CASE WHEN col.is_nullable = 1 AND typ.name IN ( 'bigint', 'bit', 'date', 'datetime', 'datetime2', 'datetimeoffset', 'decimal', 'float', 'int', 'money', 'numeric', 'real', 'smalldatetime', 'smallint', 'smallmoney', 'time', 'tinyint', 'uniqueidentifier' ) THEN '?' ELSE '' END NullableSign, ISNULL(ep.value, col.name) AS Summary FROM sys.columns col JOIN sys.types typ ON col.system_type_id = typ.system_type_id AND col.user_type_id = typ.user_type_id LEFT JOIN sys.extended_properties ep ON ep.major_id = col.object_id AND ep.minor_id = col.column_id WHERE col.object_id = OBJECT_ID(@TableName) ) t ORDER BY ColumnId; SET @Result = @Result + ' }'; PRINT @Result;