我希望提取表格的一些列(Col1 和 2)并以 JSON 格式输入,并在每个节点中编写一些硬编码的 JSON,就像这样。
{ “col1”:“xxxx”,“col2”:“xxxx”,“hardcodedString”:“xxxx”,“hardcodedString”:“xxxx”,“hardcodedString”:“xxxx”,“hardcodedString”:“xxxx”,“硬编码字符串":"xxxx"},
我找到了以下 git 脚本,它创建了一个应该生成 JSON 的 SP,但是当我按要求执行时,我得到“命令已成功完成”
输出的任何想法,或者确实是实现我的 JSON 的更好方法?
create procedure [dbo].[GetJSON] (
@schema_name varchar(50),
@table_name varchar(50),
@registries_per_request smallint = null
)
as
begin
if ( ( select count(*) from information_schema.tables where table_schema = @schema_name and table_name = @table_name ) > 0 )
begin
declare @json varchar(max),
@line varchar(max),
@columns varchar(max),
@sql nvarchar(max),
@columnNavigator varchar(50),
@counter tinyint,
@size varchar(10)
if (@registries_per_request is null)
begin
set @size = ''
end
else
begin
set @size = 'top ' + convert(varchar, @registries_per_request)
end
set @columns = '{'
declare schemaCursor cursor for
select column_name
from information_schema.columns
where table_schema = @schema_name
and table_name = @table_name
open schemaCursor
fetch next from schemaCursor into @columnNavigator
select @counter = count(*)
from information_schema.columns
where table_schema = @schema_name
and table_name = @table_name
while @@fetch_status = 0
begin
set @columns = @columns + '''''' + @columnNavigator + ''''':'''''' + convert(varchar, ' + @columnNavigator + ') + '''''''
set @counter = @counter - 1
if ( 0 != @counter )
begin
set @columns = @columns + ','
end
fetch next from schemaCursor into @columnNavigator
end
set @columns = @columns + '}'
close schemaCursor
deallocate schemaCursor
set @json = '['
set @sql = 'select ' + @size + '''' + @columns + ''' as json into tmpJsonTable from [' + @schema_name + '].[' + @table_name + ']'
exec sp_sqlexec @sql
select @counter = count(*) from tmpJsonTable
declare tmpCur cursor for
select * from tmpJsonTable
open tmpCur
fetch next from tmpCur into @line
while @@fetch_status = 0
begin
set @counter = @counter - 1
set @json = @json + @line
if ( 0 != @counter )
begin
set @json = @json + ','
end
fetch next from tmpCur into @line
end
set @json = @json + ']'
close tmpCur
deallocate tmpCur
drop table tmpJsonTable
select @json as json
end
end