Arbitrary SQL Server Table to XHTML Table
I saw on a website, a guy had returned his database table information as an html table. It was pretty neat. His code is as follows:
select 2 [@cellpadding]
,2 [@cellspacing]
,1 [@border]
--This returns the header
,(select th
from (select 'Database Table' th
union all
select 'Entity Count'
union all
select 'Total Rows') d --name of this alias is irrelevant but you have to have one
for xml path(''),type) tr --tr here defines that the header row will be a tr element
--This returns the rows in the table
,(select (select dbtable [*] for xml path('td'),type),
(select entities [*] for xml path('td'),type),
(select rows [*] for xml path('td'),type)
from (--We have to use a derived table because we are grouping
select dbtable = object_name( object_id ),
entities = count( distinct name ),
rows = count( * )
from sys.columns
group by object_name( object_id )) data
--name of this alias is irrelevant but you have to have one
for xml path ('tr'),type) --path('tr') turns each row into a tr element
for xml path('table'), type
I would like to see if it is possible to return an html table from one arbitrary SQL Server table. I know that people have differing opinions on whether or not there is a best way to do this, that is not however the point of this question. I am new to SQL and I am just trying to learn my way around it. My code is as follows.
select dataid as [@id], *
from table_1
for xml path('tr'), root('table')
It returns something like:
<table>
<tr id="1">
<column_1>data</column_1>
<column_2>data</column_2>
</tr>
<tr id="2">
<column_1>data</column_1>
<column_2>data</column_2>
</tr>
</table>
I would prefer output like:
<table>
<tr id="1">
<td>data</td>
<td>data</td>
</tr>
<tr id="2">开发者_StackOverflow社区;
<td>data</td>
<td>data</td>
</tr>
</table>
Is this doable in an SQL Server Transaction? If so, how would it be done?
I'm really not sure this is a good thing to do. The principle of separation of concerns (or "encapsulation") implies a database engineer should be concerned with data, not presentation; that is to say, a SQL query should return information which is then formatted for display by a separate view. Returning HTML from a SQL procedure moves more work to the database server, requires changing the database when a new version of HTML comes around or you want a new table format, confuses the DBA...
I don't think this is a good way of doing business.
maybe this is a good use of XSLT
It's ugly, but I figured it out...
declare @tds nvarchar(max),
@sql nvarchar(max),
@table char(10)
set @sql = 'select(select td from( '
set @table = 'table_2'
set @tds = ''
select @tds = @tds + 'union all select cast([' + Column_name + '] as nvarchar(max)) ' + char(13) + char(10)
FROM INFORMATION_SCHEMA.Columns
WHERE TABLE_NAME = @table
set @tds = stuff(@tds, 1, 10, '')
set @tds = stuff(@tds, charindex('))',@tds, 1), 2, ')) td ')
set @sql = @sql + @tds
SET @sql = @sql + ')something_here for xml path(''''), type) from table_2 '
SET @sql = @sql + ' FOR XML PATH(''tr''), ROOT(''tbody''), TYPE'
EXEC SP_EXECUTESQL @sql
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