SQL Dynamic Schema Name in Cursor - sql

Question

I want to use Cursor with dynamic SchemaName.
In my below Code SELECT id FROM #schema_names.company line is my issue. #schema_names is dynamic Schema Name.
How to use Dynamic Schema/Table Name in Cursor?
-- in-memory schema table to hold distinct schema_names
DECLARE #i int
DECLARE #numrows int
DECLARE #schema_names nvarchar(max)
DECLARE #schema_table TABLE (
idx smallint Primary Key IDENTITY(1,1)
, schema_names nvarchar(max)
)
DECLARE #company_id NVARCHAR(max)
-- populate schema table
INSERT #schema_table
SELECT name FROM sys.schemas Where name <> 'dbo' AND name <> 'guest' AND name <> 'INFORMATION_SCHEMA' AND name <> 'db_accessadmin' AND name <> 'db_backupoperator' AND name <> 'db_datareader' AND name <> 'db_datawriter' AND name <> 'db_ddladmin' AND name <> 'db_denydatareader' AND name <> 'db_denydatawriter' AND name <> 'db_owner' AND name <> 'db_securityadmin' AND name <> 'sys'
select * from #schema_table
-- enumerate the table
SET #i = 1
SET #numrows = (SELECT COUNT(*) FROM #schema_table)
IF #numrows > 0
WHILE (#i <= (SELECT MAX(idx) FROM #schema_table))
BEGIN
-- get the next record primary key
SET #schema_names = (SELECT schema_names FROM #schema_table WHERE idx = #i)
DECLARE my_cursor CURSOR local static read_only forward_only FOR
SELECT id FROM #schema_names.company
OPEN my_cursor
FETCH next FROM my_cursor INTO #company_id
WHILE ##FETCH_STATUS = 0
BEGIN
--Do something with Id here
PRINT #company_id + 'a'
FETCH next FROM my_cursor INTO #company_id
END
CLOSE my_cursor
DEALLOCATE my_cursor
BEGIN TRY
DECLARE #sSQL nvarchar(500);
SELECT #sSQL = N'INSERT ['+#schema_names+'].[Menu] VALUES (9, N''Dashboard'', N''Charts'', N''/Dash/Chart'', 1)'
EXEC sp_executesql #sSQL
END TRY
BEGIN CATCH
SELECT ERROR_MESSAGE()+' '+#schema_names AS ErrorMessage;
END CATCH
-- increment counter for next record
SET #i = #i + 1
END

Answer 1

try This approach
1 - Create a Temp Table
2 - Insert the Id from your Table to the Temp table using Dynamic SQL
3 - Fetch Cursor from Temp Table
CREATE TABLE #Temp
(
Id INT
)
SET #schema_names =
(
SELECT
schema_names
FROM #schema_table
WHERE idx = #i
)
TRUNCATE TABLE #temp
INSERT INTO #temp(Id)
EXEC('SELECT id FROM '+#schema_names+'.company;')
DECLARE my_cursor CURSOR LOCAL STATIC READ_ONLY FORWARD_ONLY
FOR
SELECT ID FROM #TEMP
OPEN my_cursor;
FETCH NEXT FROM my_cursor INTO #company_id;