Dynamic SQL (saving result table) - sql

Question

I have the following table, used in dynamic pivot for PORT_NAME:
DECLARE #BaseQuery TABLE
(
PORT_NAME NVARCHAR(50),
BILL_ACCOUNT_NAME NVARCHAR(50),
AVERAGE float
);
I need to save the output as a table, I tried to add the following code, since the columns need to be dynamic to schedule a SQL job:
DECLARE #sql varchar(max)
SET #sql = 'CREATE TABLE ##T1 (BILL_ACCOUNT_NAME NVARCHAR(50),' + #Columns + ' float)'
EXEC(#sql)
INSERT INTO ##T1 VALUES (select #Query)
SELECT * FROM ##T1
got (Incorrect syntax near the keyword 'select'.)
I am working in SQL Server Management Studio 18 (2019 version), I tried to read the code in SSIS was not able to read the results.

Answer 1

You can insert your pivot result into a new table object using INTO.
Quick Example:
Executes the #Query string which creates the dbo.RESULT_PIVOT_TABLE object.
SET #Query = 'SELECT
BILL_ACCOUNT_NAME,
' + #Columns + N'
INTO dbo.RESULT_PIVOT_TABLE -- INSERT PIVOT RESULT INTO TABLE OBJECT
FROM (SELECT
PORT_NAME,
BILL_ACCOUNT_NAME,
AVERAGE
FROM #BaseQuery) AS a PIVOT (MAX(AVERAGE) FOR a.PORT_NAME IN (' + #Columns + ')) AS P';
EXEC sp_executesql #Query;
SELECT * FROM dbo.RESULT_PIVOT_TABLE;
Full Example:
DROP TABLE IF EXISTS dbo.RESULT_PIVOT_TABLE;
DROP TABLE IF EXISTS #BaseQuery;
CREATE TABLE #BaseQuery
(
PORT_NAME NVARCHAR(50),
BILL_ACCOUNT_NAME NVARCHAR(50),
AVERAGE FLOAT
);
DECLARE #Query NVARCHAR(MAX);
DECLARE #Columns NVARCHAR(MAX);
/* POPULATE TEMP DUMMY TABLE WITH FAKE DATA */
INSERT INTO #BaseQuery
SELECT
a.PORT_NAME,
a.BILL_ACCOUNT_NAME,
a.AVERAGE
FROM (SELECT
'PORT 1' AS PORT_NAME,
'NAME 1' AS BILL_ACCOUNT_NAME,
1.23 AS AVERAGE
UNION ALL
SELECT
'PORT 2' AS PORT_NAME,
'NAME 2' AS BILL_ACCOUNT_NAME,
2.34 AS AVERAGE
UNION ALL
SELECT
'PORT 3' AS PORT_NAME,
'NAME 3' AS BILL_ACCOUNT_NAME,
3.45 AS AVERAGE) a;
/* SET COLUMNS FOR PIVOT */
SELECT
#Columns = STRING_AGG(a.PORT_NAME, ',')
FROM (SELECT DISTINCT
QUOTENAME(PORT_NAME) AS PORT_NAME
FROM #BaseQuery) a;
/* SET DYNAMIC QUERY STRING THAT INSERTS PIVOT RESULT INTO TABLE OBJECT */
SET #Query = 'SELECT
BILL_ACCOUNT_NAME,
' + #Columns + N'
INTO dbo.RESULT_PIVOT_TABLE -- INSERT PIVOT RESULT INTO TABLE OBJECT
FROM (SELECT
PORT_NAME,
BILL_ACCOUNT_NAME,
AVERAGE
FROM #BaseQuery) AS a PIVOT (MAX(AVERAGE) FOR a.PORT_NAME IN (' + #Columns + ')) AS P';
EXEC sp_executesql #Query;
SELECT * FROM dbo.RESULT_PIVOT_TABLE;
Result:
BILL_ACCOUNT_NAME
[PORT 1]
[PORT 2]
[PORT 3]
NAME 1
1.23
null
null
NAME 2
null
2.34
null
NAME 3
null
null
3.45