柚子快报邀请码778899分享：利用SQL生成模型实体类
DECLARE @TableName sysname = 'TableName';
DECLARE @Result VARCHAR(MAX) = 'public class ' + @TableName + '
{';
SELECT @Result = @Result + '
///
/// ' + CAST(t.Summary AS VARCHAR(MAX)) + '
///
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;
柚子快报邀请码778899分享：利用SQL生成模型实体类
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