1.表信息

 Select *

    FROM INFORMATION_SCHEMA.COLUMNS

    order by Table_name;
select * from INFORMATION_SCHEMA.tables

2.数据字典

SELECT

        (case when a.colorder=1 then d.name else '' end)表名,

        a.colorder 字段序号,

        a.name 字段名,

        (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 标识,

       (case when (SELECT count(*)

        FROM sysobjects

        WHERE (name in

                (SELECT name

                FROM sysindexes

                WHERE (id = a.id) AND (indid in

                         (SELECT indid

                        FROM sysindexkeys

                        WHERE (id = a.id) AND (colid in

                                  (SELECT colid

                                 FROM syscolumns

                                 WHERE (id = a.id) AND (name = a.name))))))) AND

            (xtype = 'PK'))>0 then '√' else '' end) 主键,

       b.name 类型,

       a.length 占用字节数,

      COLUMNPROPERTY(a.id,a.name,'PRECISION') as 长度,

      isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as 小数位数,

      (case when a.isnullable=1 then '√'else '' end) 允许空,

      isnull(e.text,'') 默认值,

      isnull(g.[value],'') AS 字段说明

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.major_id

order by a.id,a.colorder

3.小技巧

Set nocount on

DECLARE @TableName nvarchar(35)

DECLARE Tbls CURSOR

FOR

    Select distinct Table_name

    FROM INFORMATION_SCHEMA.COLUMNS

    --put any exclusions here

    --where table_name not like '%old'

    order by Table_name

OPEN Tbls

PRINT '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'

PRINT '<html xmlns="http://www.w3.org/1999/xhtml">'

PRINT '<head>'

PRINT '<title>数据库字典</title>'

PRINT '<style type="text/css">'

PRINT 'body{margin:0; font:11pt "arial", "微软雅黑"; cursor:default;}'

PRINT '.tableBox{margin:10px auto; padding:0px; width:1000px; height:auto; background:#FBF5E3; border:1px solid #45360A}'

PRINT '.tableBox h3 {font-size:12pt; height:30px; line-height:30px; background:#45360A; padding:0px 0px 0px 15px; color:#FFF; margin:0px; text-align:left }'

PRINT '.tableBox table {width:1000px; padding:0px }'

PRINT '.tableBox th {height:25px; border-top:1px solid #FFF; border-left:1px solid #FFF; background:#F7EBC8; border-right:1px solid #E0C889; border-bottom:1px solid #E0C889 }'

PRINT '.tableBox td {height:25px; padding-left:10px; border-top:1px solid #FFF; border-left:1px solid #FFF; border-right:1px solid #E0C889; border-bottom:1px solid #E0C889 }'

PRINT '</style>'

PRINT '</head>'

PRINT '<body>'

FETCH NEXT FROM Tbls

INTO @TableName

WHILE @@FETCH_STATUS = 0

BEGIN

    PRINT '<div class="tableBox">'

    Select '<h3>' + @TableName + ' : '+cast(Value as varchar(1000)) + '</h3>'

    FROM sys.extended_properties A

    WHERE A.major_id = OBJECT_ID(@TableName)

    and name = 'MS_Description' and minor_id = 0

    PRINT '<table cellspacing="0">'

    --Get the Description of the table

    --Characters 1-250

    PRINT '<tr>' --Set up the Column Headers for the Table

    PRINT '<th>字段名称</th>'

    PRINT '<th>描述</th>'

    PRINT '<th>主键</th>'

    PRINT '<th>外键</th>'

    PRINT '<th>类型</th>'

    PRINT '<th>长度</th>'

    PRINT '<th>数值精度</th>'

    PRINT '<th>小数位数</th>'

    PRINT '<th>允许为空</th>'

    PRINT '<th>计算列</th>'

    PRINT '<th>标识列</th>'

    PRINT '<th>默认值</th>'

    --Get the Table Data

    SELECT '</tr><tr>',

    '<td>' + CAST(clmns.name AS VARCHAR(35)) + '</td>',

    '<td>' + ISNULL(CAST(exprop.value AS VARCHAR(500)),'') + '</td>',

    '<td>' + CAST(ISNULL(idxcol.index_column_id, 0)AS VARCHAR(20)) + '</td>',

    '<td>' + CAST(ISNULL(

    (SELECT TOP 1 1

    FROM sys.foreign_key_columns AS fkclmn

    WHERE fkclmn.parent_column_id = clmns.column_id

    AND fkclmn.parent_object_id = clmns.object_id

    ), 0) AS VARCHAR(20)) + '</td>',

    '<td>' + CAST(udt.name AS CHAR(15)) + '</td>' ,

    '<td>' + CAST(CAST(CASE WHEN typ.name IN (N'nchar', N'nvarchar') AND clmns.max_length <> -1

    THEN clmns.max_length/2

    ELSE clmns.max_length END AS INT) AS VARCHAR(20)) + '</td>',

    '<td>' + CAST(CAST(clmns.precision AS INT) AS VARCHAR(20)) + '</td>',

    '<td>' + CAST(CAST(clmns.scale AS INT) AS VARCHAR(20)) + '</td>',

    '<td>' + CAST(clmns.is_nullable AS VARCHAR(20)) + '</td>' ,

    '<td>' + CAST(clmns.is_computed AS VARCHAR(20)) + '</td>' ,

    '<td>' + CAST(clmns.is_identity AS VARCHAR(20)) + '</td>' ,

    '<td>' + isnull(CAST(cnstr.definition AS VARCHAR(20)),'') + '</td>'

    FROM sys.tables AS tbl INNER JOIN sys.all_columns AS clmns

    ON clmns.object_id=tbl.object_id

    LEFT OUTER JOIN sys.indexes AS idx

    ON idx.object_id = clmns.object_id

    AND 1 =idx.is_primary_key

    LEFT OUTER JOIN sys.index_columns AS idxcol

    ON idxcol.index_id = idx.index_id

    AND idxcol.column_id = clmns.column_id

    AND idxcol.object_id = clmns.object_id

    AND 0 = idxcol.is_included_column

    LEFT OUTER JOIN sys.types AS udt

    ON udt.user_type_id = clmns.user_type_id

    LEFT OUTER JOIN sys.types AS typ

    ON typ.user_type_id = clmns.system_type_id

    AND typ.user_type_id = typ.system_type_id

    LEFT JOIN sys.default_constraints AS cnstr

    ON cnstr.object_id=clmns.default_object_id

    LEFT OUTER JOIN sys.extended_properties exprop

    ON exprop.major_id = clmns.object_id

    AND exprop.minor_id = clmns.column_id

    AND exprop.name = 'MS_Description'

    WHERE (tbl.name = @TableName and

    exprop.class = 1) --I don't wand to include comments on indexes

    ORDER BY clmns.column_id ASC

    PRINT '</tr></table>'

    PRINT '</div>'

    FETCH NEXT FROM Tbls

    INTO @TableName

END

PRINT '</body></HTML>'

CLOSE Tbls

DEALLOCATE Tbls

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