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June 16, 2020 07:34
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A simple TSQL script to quickly generate c# POCO classes from SQL Server tables and views. (Copied from https://gist.github.com/joey-qc/6710702)
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declare @tableName varchar(200) | |
declare @columnName varchar(200) | |
declare @nullable varchar(50) | |
declare @datatype varchar(50) | |
declare @maxlen int | |
declare @pos int | |
declare @Stype varchar(50) | |
declare @isnullable varchar(1) | |
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 COLUMN_NAME, IS_NULLABLE, DATA_TYPE, isnull(CHARACTER_MAXIMUM_LENGTH,'-1'), ORDINAL_POSITION | |
, CASE WHEN (IS_NULLABLE = 'NO') THEN '' | |
ELSE | |
CASE WHEN (DATA_TYPE IN ('char','nchar','varchar','nvarchar')) THEN '' ELSE '?' END | |
END | |
from [INFORMATION_SCHEMA].[COLUMNS] | |
WHERE [TABLE_NAME] = @tableName | |
order by [ORDINAL_POSITION] | |
OPEN column_cursor | |
FETCH NEXT FROM column_cursor INTO @columnName, @nullable, @datatype, @maxlen, @pos, @isNullable | |
WHILE @@FETCH_STATUS = 0 | |
BEGIN | |
-- datatype | |
select @sType = case @datatype | |
when 'int' then 'int' | |
when 'smallint' then 'short' | |
when 'bigint' then 'long' | |
when 'decimal' then 'Decimal' | |
when 'money' then 'Decimal' | |
when 'char' then 'string' | |
when 'nchar' then 'string' | |
when 'smallint' then 'short' | |
when 'varchar' then 'string' | |
when 'nvarchar' then 'string' | |
when 'uniqueidentifier' then 'Guid' | |
when 'datetime' then 'DateTime' | |
when 'bit' then 'bool' | |
else 'string' | |
END | |
If (@pos = 1) | |
PRINT ' [Key]' | |
If (@nullable = 'NO' AND @pos > 1) | |
PRINT ' [Required]' | |
if (@sType = 'string' and @maxLen <> '-1') | |
PRINT ' [MaxLength(' + convert(varchar(4),@maxLen) + ')]' | |
if (@sType = 'datetime') | |
PRINT ' [Column(TypeName = "datetime")]' | |
SELECT @sProperty = ' public ' + @sType + @isNullable + ' ' + @columnName + ' { get; set; }' | |
PRINT @sProperty | |
--print '' | |
FETCH NEXT FROM column_cursor INTO @columnName, @nullable, @datatype, @maxlen, @pos, @isNullable | |
END | |
CLOSE column_cursor | |
DEALLOCATE column_cursor | |
print '}' | |
print '' | |
FETCH NEXT FROM table_cursor | |
INTO @tableName | |
END | |
CLOSE table_cursor | |
DEALLOCATE table_cursor |
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