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  • 【SQL骚操作】SqlServer数据库表生成C# Model实体类SQL语句

    已知现有表T1

    想快速获取cs类结构

    /// <summary>
    ///  T1    
    /// </summary>
    public class T1
    {
        /// <summary>
        /// 主键    
        /// </summary>
        public int ID { get; set; }
    
        /// <summary>
        /// 姓名    
        /// </summary>
        public string NameLijhs { get; set; }
    
    }

    通过运行下面的sql即可,先配置表名。

    declare @TableName sysname = 'T1'
    declare @Result varchar(max) = '
    /// <summary>
    ///  ' +  @TableName +
        
    '    
    /// </summary>
    public class ' + @TableName + '
    {'
    
    select @Result = @Result + '
        /// <summary>
        /// ' +  CONVERT(NVARCHAR(500), ISNULL(ColName, '无')) +
        
    '    
        /// </summary>
        public ' + ColumnType + NullableSign + ' ' + ColumnName + ' { get; set; }
    '
    from
    (
        SELECT
            replace(col.name, ' ', '_') ColumnName,
            column_id ColumnId,
            prop.value ColName,
            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
        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 prop ON col.object_id = prop.major_id AND col.column_id = prop.minor_id
        where object_id = object_id(@TableName)
    ) t
    --order by ColumnId
    
    set @Result = @Result  + '
    }'
    
    print @Result

    效果如下:

    完美,copy到项目里即可。

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  • 原文地址:https://www.cnblogs.com/itjeff/p/15188361.html
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