国产化之路 Linux Mono下的asp.net 开发笔记（二）

CREATE PROCEDURE  [SqlToDM_CreateTable] 
           @tablename nvarchar(50)
AS
BEGIN
    declare @表名    nvarchar(50)    
    declare @表说明    nvarchar(50)
    declare @字段序号        nvarchar(50)
    declare @字段名        nvarchar(50)
    declare @标识        nvarchar(50)
    declare @主键        nvarchar(50)
    declare @类型        nvarchar(50)
    declare @占用字节数        nvarchar(50)
    declare @长度        nvarchar(50)
    declare @小数位数        nvarchar(50)
    declare @允许空        nvarchar(50)
    declare @默认值        nvarchar(50)
    declare @字段说明    nvarchar(50)
      DECLARE _cursor CURSOR FOR  
    SELECT
    表名=convert(nvarchar(50),case when a.colorder=1 then d.name else '' end),
    表说明=convert(nvarchar(50),case when a.colorder=1 then isnull(f.value,'') else '' end),
    字段序号=convert(nvarchar(50),a.colorder),
    字段名=convert(nvarchar(50),a.name),
    标识=convert(nvarchar(50),case when COLUMNPROPERTY(a.id,a.name,'IsIdentity')=1 then '√'else '' end),
    主键=convert(nvarchar(50),case when exists(SELECT 1 FROM sysobjects where xtype='PK' and name in (
      SELECT name FROM sysindexes WHERE indid in(
       SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid
       ))) then '√' else '' end),
    类型=convert(nvarchar(50),b.name),
    占用字节数=convert(nvarchar(50),a.length),
    长度=convert(nvarchar(50),COLUMNPROPERTY(a.id,a.name,'PRECISION')),
    小数位数=convert(nvarchar(50),isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0)),
    允许空=convert(nvarchar(50),case when a.isnullable=1 then 'NULL'else 'NOT NULL' end),
    默认值=convert(nvarchar(50),isnull(e.text,'')),
    字段说明=convert(nvarchar(50),isnull(g.[value],''))
    FROM syscolumns a
    left join systypes b on a.xtype=b.xusertype
    inner join sysobjects d on a.id=d.id and d.xtype='U' and d.name<>'dtproperties'
    left join syscomments e on a.cdefault=e.id
    left join sys.extended_properties g on a.id=g.major_id and a.colid=g.minor_id
    left join sys.extended_properties f on d.id=f.major_id and f.minor_id =0
    where d.name=@tablename
    order by a.id,a.colorder    
    OPEN _cursor;  
    FETCH NEXT FROM _cursor  INTO     @表名,@表说明,@字段序号,@字段名,@标识,@主键,@类型,@占用字节数,@长度,@小数位数,@允许空,@默认值,@字段说明
    DECLARE @result nvarchar(max)='CREATE TABLE '+@tablename+'('
    DECLARE @key nvarchar(max)=''
    WHILE @@FETCH_STATUS = 0  
    BEGIN  
        set @长度='('+@长度+') '
        if @类型='uniqueidentifier'
        begin
            set @类型='NCHAR'
            set @长度='(36)'
        end
        else if CHARINDEX('char',@类型)>0 and CHARINDEX('-1',@长度)>0
        begin
            set @类型='LONGVARCHAR'
            set @长度=''
        end
        else if CHARINDEX('int',@类型)>0 or CHARINDEX('date',@类型)>0
          or CHARINDEX('bit',@类型)>0 or CHARINDEX('image',@类型)>0
        begin
            set @长度=''
        end
        else if CHARINDEX('money',@类型)>0  
        begin
            set @类型='DECIMAL'
            set @长度='(19,4)'
        end
        else if @小数位数<>'0'  
        begin
            set @长度='('+@长度+','+@小数位数+')'
        end
        set @result=@result+@字段名+' '+@类型+@长度+' '+@允许空+','
        --if(@主键='√')
        --begin
        --    set @key=@key+'NOT CLUSTER PRIMARY KEY('+@字段名+')'+char(10)
  --      end
        FETCH NEXT FROM _cursor  INTO @表名,@表说明,@字段序号,@字段名,@标识,@主键,@类型,@占用字节数,@长度,@小数位数,@允许空,@默认值,@字段说明
        --,@字段名,@标识,@主键,@类型,@占用字节数,@长度,@小数位数,@允许空,@默认值,@字段说明  
    END  
--  CREATE UNIQUE  INDEX "3333" ON "SYSDBA"."APIURLLIST"("URL" ASC,"DESCRIPT" ASC) STORAGE(ON "MAIN", CLUSTERBTR) ;
CLOSE _cursor;  
    DEALLOCATE _cursor;
    if @key=''
    begin
        set @result=substring(@result,1,len(@result)-1)
    end
    select @result+@key+');'
      DECLARE _cursor2 CURSOR FOR  
        SELECT a.name IndexName,d.COLUMN_NAME,d.ORDINAL_POSITION,a.type_desc,convert(char(1),a.is_primary_key) is_primary_key 
        FROM sys.indexes a (NOLOCK)
        INNER JOIN sys.index_columns b (NOLOCK) ON a.object_id = b.object_id and a.index_id = b.index_id 
        INNER JOIN sysindexkeys c (NOLOCK) ON a.object_id = c.id and b.index_id = c.indid and b.column_id = c.colid
        INNER JOIN INFORMATION_SCHEMA.COLUMNS d (NOLOCK) ON a.object_id = object_id(d.TABLE_NAME) and b.column_id = d.ORDINAL_POSITION
        WHERE a.object_id = object_id(@tablename)
        /*and a.is_primary_key = 1  主键索引*/
        /*and a.is_unique = 1 唯一索引*/
        ORDER BY a.name,b.key_ordinal
    OPEN _cursor2;  
    declare @IndexName nvarchar(50)
    declare @COLUMN_NAME nvarchar(50)
    declare @ORDINAL_POSITION nvarchar(50)
    declare @type_desc nvarchar(50)
    declare @is_primary_key char(1)
    FETCH NEXT FROM _cursor2  INTO     @IndexName,@COLUMN_NAME,@ORDINAL_POSITION,@type_desc,@is_primary_key
    DECLARE @result2 nvarchar(max)=''
    DECLARE @indextemp nvarchar(50)=''
    DECLARE @indexcontent nvarchar(max)=''
    WHILE @@FETCH_STATUS = 0  
    BEGIN  
        if @indextemp<>@IndexName
        BEGIN
            set @indextemp=@IndexName
            if(@result2<>'')
            begin
                if substring(@result2,len(@result2),1)=','
                begin
                    set @result2=substring(@result2,1,len(@result2)-1)+');'
                end                
--                set @result2=@result2+')'
            end
            if @is_primary_key='1'
            begin
                set @result2=@result2+'ALTER TABLE '+@tablename+' add constraint '+@IndexName+' primary key ('+@COLUMN_NAME+' ,'
            end
            else
            begin
                set @result2=@result2+'CREATE UNIQUE  INDEX "'+@IndexName+'" ON '+@tablename+'('+@COLUMN_NAME+' ,'
            end
        END
        ELSE
        BEGIN
            set @result2=@result2+'"'+@COLUMN_NAME+'" ,'
        END
        FETCH NEXT FROM _cursor2  INTO     @IndexName,@COLUMN_NAME,@ORDINAL_POSITION,@type_desc,@is_primary_key
    END
    CLOSE _cursor2;  
    DEALLOCATE _cursor2;
    if substring(@result2,len(@result2),1)=','
    begin
        set @result2=substring(@result2,1,len(@result2)-1)+')'
    end
    select @result2
END
GO