從用戶定義的表類型SQL生成C＃類

Question

我需要從SQL Server用戶定義類型生成遵循C＃類規范的字符串。

我有從不同的堆棧溢出答案中得到的代碼，該代碼可以執行我想要的操作，並從SQL Server表生成C＃類。 我想對其進行修改，以使其從SQL Server用戶定義的表類型生成類似的類。

declare @TableName sysname = 'YOURTABLENAME'
declare @Result varchar(max) = 'public class ' + @TableName + '
{'

select @Result = @Result + '
    public ' + ColumnType + NullableSign + ' ' + ColumnName + ' { get; set; }'
from
(
    select 
        replace(col.name, ' ', '_') ColumnName,
        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 'string'
            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
    where object_id = object_id(@TableName)
) t
order by ColumnId

set @Result = @Result  + '
}'

print @Result

我嘗試修改select語句以根據用戶定義的表類型返回字符串。 但是，這僅返回ModifiedBy列

from 
    sys.table_types as tt
inner join 
    sys.columns as col on tt.type_table_object_id = col.object_id
join 
    sys.types typ on col.system_type_id = typ.system_type_id 
                  and col.user_type_id = typ.user_type_id
where 
    tt.name = @TableName

Answer 1

以下SQL腳本應該可以解決問題

 declare @TypeName sysname = 'VehicleActivity_Raw' declare @Result varchar(max) = 'public class ' + @TypeName + ' {' select @Result = @Result + ' public ' + ColumnType + NullableSign + ' ' + ColumnName + ' {get; set;}' FROM ( Select column_id, replace(c.name, ' ', '_') ColumnName, case y.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 'string' 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' when 'sysname' then 'string' else 'UNKNOWN_' + y.name end ColumnType, case when c.is_nullable = 1 and y.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.table_types t Inner join sys.columns c on c.object_id = t.type_table_object_id Inner join sys.types y ON y.system_type_id = c.system_type_id WHERE t.is_user_defined = 1 AND t.is_table_type = 1 AND t.name = @TypeName ) AS C ORDER BY column_id set @Result = @Result + ' }' print @Result