收藏几段SQL Server语句和存储过程
-- ======================================================
--列出SQL SERVER 所有表，字段名，主键，类型，长度，小数位数等信息
--在查询分析器里运行即可,可以生成一个表，导出到EXCEL中
-- ======================================================
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 sysproperties g
on a.id=g.id AND a.colid = g.smallid
order by a.id,a.colorder
-------------------------------------------------------------------------------------------------
列出SQL SERVER 所有表、字段定义，类型，长度，一个值等信息
并导出到Excel 中
-- ======================================================
-- Export all user tables definition and one sample value
-- jan-13-2003,Dr.Zhang
-- ======================================================
在查询分析器里运行：
SET ANSI_NULLS OFF
GO
SET NOCOUNT ON
GO
SET LANGUAGE 'Simplified Chinese'
go
DECLARE @tbl nvarchar(200),@fld nvarchar(200),@sql nvarchar(4000),@maxlen int,@sample nvarchar(40)
SELECT d.name TableName,a.name FieldName,b.name TypeName,a.length Length,a.isnullable IS_NULL INTO #t
FROM syscolumns a, systypes b,sysobjects d
WHERE a.xtype=b.xusertype and a.id=d.id and d.xtype='U'
DECLARE read_cursor CURSOR
FOR SELECT TableName,FieldName FROM #t
SELECT TOP 1 '_TableName ' TableName,
'FieldName ' FieldName,'TypeName ' TypeName,
'Length' Length,'IS_NULL' IS_NULL,
'MaxLenUsed' AS MaxLenUsed,'Sample Value ' Sample,
'Comment ' Comment INTO #tc FROM #t
OPEN read_cursor
FETCH NEXT FROM read_cursor INTO @tbl,@fld
WHILE (@@fetch_status <> -1) --- failes
BEGIN
IF (@@fetch_status <> -2) -- Missing
BEGIN
SET @sql=N'SET @maxlen=(SELECT max(len(cast('+@fld+' as nvarchar))) FROM '+@tbl+')'
--PRINT @sql
EXEC SP_EXECUTESQL @sql,N'@maxlen int OUTPUT',@maxlen OUTPUT
--print @maxlen
SET @sql=N'SET @sample=(SELECT TOP 1 cast('+@fld+' as nvarchar) FROM '+@tbl+' WHERE len(cast('+@fld+' as nvarchar))='+convert(nvarchar(5),@maxlen)+')'
EXEC SP_EXECUTESQL @sql,N'@sample varchar(30) OUTPUT',@sample OUTPUT
--for quickly
--SET @sql=N'SET @sample=convert(varchar(20),(SELECT TOP 1 '+@fld+' FROM '+
--@tbl+' order by 1 desc ))'
PRINT @sql
print @sample
print @tbl
&nb
