Generate c# POCO classes from SQL Server database

generate_poco_classes_by_mssql_dbase.sql

--fixed version of 
--SOURCE : https://gist.github.com/joey-qc/6710702?permalink_comment_id=5345514#gistcomment-5345514
--* PRIMARY KEY appears double/triple/tenple
--* FOREIGN KEY removed (useless)

DECLARE @tableName varchar(200)
DECLARE @columnName varchar(200)
DECLARE @nullable varchar(50)
DECLARE @datatype varchar(50)
DECLARE @maxlen int
DECLARE @description nvarchar(500)
DECLARE @isPrimaryKey bit
DECLARE @isForeignKey bit
DECLARE @Stype varchar(50)
DECLARE @Sproperty varchar(200)
DECLARE table_cursor CURSOR FOR
SELECT TABLE_NAME
FROM [INFORMATION_SCHEMA].[TABLES]
OPEN table_cursor
FETCH NEXT FROM table_cursor INTO @tableName
WHILE @@FETCH_STATUS = 0
BEGIN
PRINT 'public class ' + @tableName + ' {'
DECLARE column_cursor CURSOR FOR
SELECT
c.COLUMN_NAME,
c.IS_NULLABLE,
c.DATA_TYPE,
ISNULL(c.CHARACTER_MAXIMUM_LENGTH, '-1') AS MaxLen,
ISNULL(CAST(ep.value AS NVARCHAR(MAX)), '') AS Description,
CASE WHEN pk.COLUMN_NAME IS NOT NULL THEN 1 ELSE 0 END AS IsPrimaryKey
--CASE WHEN fk.parent_column_id IS NOT NULL THEN 1 ELSE 0 END AS IsForeignKey
FROM [INFORMATION_SCHEMA].[COLUMNS] c
LEFT JOIN sys.columns sc ON sc.name = c.COLUMN_NAME
AND sc.object_id = OBJECT_ID(@tableName)
LEFT JOIN sys.extended_properties ep ON ep.major_id = sc.object_id
AND ep.minor_id = sc.column_id
AND ep.name = 'MS_Description'
LEFT JOIN (
SELECT kcu.COLUMN_NAME, tc.TABLE_NAME
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS tc
JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE kcu
ON tc.CONSTRAINT_NAME = kcu.CONSTRAINT_NAME
WHERE tc.CONSTRAINT_TYPE = 'PRIMARY KEY'
) pk ON pk.COLUMN_NAME = c.COLUMN_NAME and pk.table_name = @tableName
--LEFT JOIN (
-- SELECT fkc.parent_column_id, fkc.parent_object_id
-- FROM sys.foreign_key_columns fkc
--) fk ON fk.parent_column_id = sc.column_id
-- AND fk.parent_object_id = OBJECT_ID(@tableName)
WHERE c.TABLE_NAME = @tableName
ORDER BY c.ORDINAL_POSITION
OPEN column_cursor
FETCH NEXT FROM column_cursor
INTO @columnName, @nullable, @datatype, @maxlen, @description, @isPrimaryKey--, @isForeignKey
WHILE @@FETCH_STATUS = 0
BEGIN
-- 資料型別轉換
SELECT @sType = CASE @datatype
WHEN 'int' THEN 'int'
WHEN 'decimal' THEN 'Decimal'
WHEN 'money' THEN 'Decimal'
WHEN 'char' THEN 'string'
WHEN 'nchar' THEN 'string'
WHEN 'varchar' THEN 'string'
WHEN 'nvarchar' THEN 'string'
WHEN 'uniqueidentifier' THEN 'Guid'
WHEN 'datetime' THEN 'DateTime'
WHEN 'bit' THEN 'bool'
ELSE 'string'
END
-- 輸出 XML 格式的 summary 註解，包含描述、主鍵和外鍵資訊
PRINT ' /// <summary>'
PRINT ' /// ' + @columnName
IF (LEN(@description) > 0)
PRINT ' /// ' + @description
IF (@isPrimaryKey = 1)
PRINT ' /// 主鍵 (Primary Key)'
IF (@isForeignKey = 1)
PRINT ' /// 外鍵 (Foreign Key)'
PRINT ' /// </summary>'
-- Required 註解
IF (@nullable = 'NO')
PRINT ' [Required]'
-- MaxLength 註解
IF (@sType = 'String' AND @maxlen <> '-1')
PRINT ' [MaxLength(' + CONVERT(varchar(4), @maxlen) + ')]'
-- 屬性輸出
SELECT @sProperty = ' public ' + @sType + ' ' + @columnName + ' { get; set; }'
PRINT @sProperty
PRINT ''
FETCH NEXT FROM column_cursor
INTO @columnName, @nullable, @datatype, @maxlen, @description, @isPrimaryKey --, @isForeignKey
END
CLOSE column_cursor
DEALLOCATE column_cursor
PRINT '}'
PRINT ''
FETCH NEXT FROM table_cursor INTO @tableName
END
CLOSE table_cursor
DEALLOCATE table_cursor