I have following Store Procedure.
Declare #myData TABLE(
Id int,
Note1 nvarchar(Max),
Note2 nvarchar(Max),
Note3 nvarchar(Max),
)
Insert into #myData (Id,Note1,Note2,Note3)
Select
--First Column
E.Id as [ID],
E.Notes as [Note1],
E.NotesDate as [Date1]
F.ItemDescription as [Note2],
F.DescriptionDate as [Date2]
G.Description as [Note3],
G.DescDate as [Date3]
From
Employee E
LEFT Join Tab1 as F
on I.EmpId = E.Id
LEFT join Tab2 AS G
on G.EmpId = E.Id
where E.Id = 1019
select * from #myData
It gives Following result table.
+------+----------+------------+-------+-------------+---------+--------------+
| ID | Note1 | Date1 | Note2 | Date2 | Note3 | Date3 |
+------+----------+------------+-------+-------------+----------+-------------+
| 1 | admils | 2020-07-02 | sadd | 2020-06-08 | 1230 | 2020-05-06 |
+------+----------+--------+---------+---------------+----------+-------------+
Now i need resulting table some thing like below...
+------+----------+-------------+--------+
| ID | Note1 | Date | Col |
+------+----------+-------------+--------+
| 1 | admils | 2020-07-02 | 1 | <- Because This Data is from Note1 Column
| 1 | sadd | 2020-06-08 | 2 | <- Because This Data is from Note2 Column
| 1 | 1230 | 2020-05-06 | 3 | <- Because This Data is from Note3 Column
+------+----------+-------------+--------+
Just unpivot your data, as shown in the linked duplicate candidate. I prefer using VALUES over UNPIVOT as it's less restrictive:
SELECT E.ID,
V.[Description],
V.[Date],
V.Col
FROM dbo.Employee E
LEFT JOIN dbo.Tab1 T1 ON E.ID = T1.EmpID
LEFT JOIN dbo.Tab2 T2 ON E.ID = T2.EmpID
CROSS APPLY (VALUES(1,E.NotesDate,E.Notes),
(2,T1.DescriptionDate,T1.ItemDescription),
(3,T2.DescDate,T2.Description))V(Col,[Date],[Description]);
Related
I am creating a code to join two different tables under a certain condition. The tables look like this
(TABLE 2)
date | deal_code | originator | servicer | random |
-----------------------------------------------------
2011 | 001 | commerzbank | SPV1 | 1 |
2012 | 001 | commerzbank | SPV1 | 12 |
2013 | 001 | commerzbank | SPV1 | 7 |
2013 | 005 | unicredit | SPV2 | 7 |
and another table
(TABLE 1)
date | deal_code | amount |
---------------------------
2011 | 001 | 100 |
2012 | 001 | 100 |
2013 | 001 | 100 |
2013 | 005 | 200 |
I would like to have this as the final result
date | deal_code | amount | originator | servicer | random |
--------------------------------------------------------------
2013 | 001 | 100 | commerzbank | SPV1 | 7 |
2013 | 005 | 200 | unicredit | SPV2 | 7 |
I created the following code
select q1.deal_code, q1.date
from table1 q1
where q1.date = (SELECT MAX(t4.date)
FROM table1 t4
WHERE t4.deal_code = q1.deal_code)
that gives me:
(TABLE 3)
date | deal_code | amount |
---------------------------
2013 | 001 | 100 |
2013 | 005 | 200 |
That is the latest observation for table 1, now I would like to have the originator and servicer information given the deal_code and date. Any suggestion? I hope to have been clear enough. Thanks.
This should do what you are looking for. Please be careful when naming columns. Date is a reserved word and is too ambiguous to be a good name for a column.
declare #Something table
(
SomeDate int
, deal_code char(3)
, originator varchar(20)
, servicer char(4)
, random int
)
insert #Something values
(2011, '001', 'commerzbank', 'SPV1', 1)
, (2012, '001', 'commerzbank', 'SPV1', 12)
, (2013, '001', 'commerzbank', 'SPV1', 7)
, (2013, '005', 'unicredit ', 'SPV2', 7)
declare #SomethingElse table
(
SomeDate int
, deal_code char(3)
, amount int
)
insert #SomethingElse values
(2011, '001', '100')
, (2012, '001', '100')
, (2013, '001', '100')
, (2013, '005', '200')
select x.SomeDate
, x.deal_code
, x.originator
, x.servicer
, x.random
, x.amount
from
(
select s.SomeDate
, s.deal_code
, s.originator
, s.servicer
, s.random
, se.amount
, RowNum = ROW_NUMBER()over(partition by s.deal_code order by s.SomeDate desc)
from #Something s
join #SomethingElse se on se.SomeDate = s.SomeDate and se.deal_code = s.deal_code
) x
where x.RowNum = 1
Looks like this would work:
DECLARE #MaxYear INT;
SELECT #MaxYear = MAX(date)
FROM table1 AS t1
INNER JOIN table2 AS t2
ON t1.deal_code = t2.deal_code;
SELECT t1.date,
t1.deal_code,
t1.amount,
t2.originator,
t2.servicer,
t2.random
FROM table1 AS t1
INNER JOIN table2 AS t2
ON t1.date = #MaxYear
AND t1.deal_code = t2.deal_code;
I agree with Sean Lange about the date column name. His method gets around the dependency on the correlated sub-query, but at the heart of things, you really just need to add an INNER JOIN to your existing query in order to get the amount column into your result set.
select
q2.date,
q2.deal_code,
q1.amount,
q2.originator,
q2.servicer,
q2.random
from
table1 q1
join
table2 q2
on q1.date = q2.date
and q1.deal_code = q2.deal_code
where q1.date = (SELECT MAX(t4.date)
FROM table1 t4
WHERE t4.deal_code = q1.deal_code)
I have a table with a million records. I need to update some columns which are null based on the existing 'not null' records of a particular id based columns. I've tried with one query, it seems to be working fine but I don't have confidence in it that it will be able to update all those 1 million records exactly the way I need. I'm providing you some sample data how my table looks like.Any help will be appreciated
SELECT * INTO #TEST FROM (
SELECT 1 AS EMP_ID,10 AS DEPT_ID,15 AS ITEM_NBR ,NULL AS AMOUNT,NULL AS ITEM_NME
UNION ALL
SELECT 1,20,16,500,'ABCD'
UNION ALL
SELECT 1,30,17,NULL,NULL
UNION ALL
SELECT 2,10,15,1000,'XYZ'
UNION ALL
SELECT 2,30,16,NULL,NULL
UNION ALL
SELECT 2,40,17,NULL,NULL
) AS A
Sample data:
+--------+---------+----------+--------+----------+
| EMP_ID | DEPT_ID | ITEM_NBR | AMOUNT | ITEM_NME |
+--------+---------+----------+--------+----------+
| 1 | 10 | 15 | NULL | NULL |
| 1 | 20 | 16 | 500 | ABCD |
| 1 | 30 | 17 | NULL | NULL |
| 2 | 10 | 15 | 1000 | XYZ |
| 2 | 30 | 16 | NULL | NULL |
| 2 | 40 | 17 | NULL | NULL |
+--------+---------+----------+--------+----------+
Expected result:
+--------+---------+----------+--------+----------+
| EMP_ID | DEPT_ID | ITEM_NBR | AMOUNT | ITEM_NME |
+--------+---------+----------+--------+----------+
| 1 | 10 | 15 | 500 | ABCD |
| 1 | 20 | 16 | 500 | ABCD |
| 1 | 30 | 17 | 500 | ABCD |
| 2 | 10 | 15 | 1000 | XYZ |
| 2 | 30 | 16 | 1000 | XYZ |
| 2 | 40 | 17 | 1000 | XYZ |
+--------+---------+----------+--------+----------+
I tried this but I'm unable to conclude whether it is updating all the 1 million records properly.
SELECT * FROM #TEST T
inner JOIN #TEST T1 ON T1.EMP_ID=T.EMP_ID
WHERE T1.AMOUNT IS NOT NULL
UPDATE T SET AMOUNT=T1.AMOUNT
FROM #TEST T
inner JOIN #TEST T1 ON T1.EMP_ID=T.EMP_ID
WHERE T1.AMOUNT IS not NULL
I have used UPDATE using inner join
UPDATE T
SET T.AMOUNT = X.AMT,T.ITEM_NME=X.I_N
FROM #TEST T
JOIN
(SELECT EMP_ID,MAX(AMOUNT) AS AMT,MAX(ITEM_NME) AS I_N
FROM #TEST
GROUP BY EMP_ID) X ON X.EMP_ID = T.EMP_ID
SELECT * into #Test1
FROM #TEST
WHERE AMOUNT IS NOT NULL
For records validation run this query first
SELECT T.AMOUNT, T1.AMOUNT, T1.EMP_ID,T1.EMP_ID
FROM #TEST T
inner JOIN #TEST1 T1 ON T1.EMP_ID=T.EMP_ID
WHERE T.AMOUNT IS NULL
Begin Trans
UPDATE T
SET T.AMOUNT=T1.AMOUNT, T.ITEM_NME= = T1.ITEM_NME
FROM #TEST T
inner JOIN #TEST1 T1 ON T1.EMP_ID=T.EMP_ID
WHERE T.AMOUNT IS NULL
rollback
SELECT EMP_ID,MAX(AMOUNT) as AMOUNT MAX(ITEM_NAME) as ITEM_NAME
INTO #t
FROM #TEST
GROUP BY EMP_ID
UPDATE t SET t.AMOUNT = t1.AMOUNT, t.ITEM_NAME = t1.ITEM_NAME
FROM #TEST t INNER JOIN #t t1
ON t.emp_id = t1.emp_id
WHERE t.AMOUNT IS NULL and t.ITEM_NAME IS NULL
Use MAX aggregate function to get amount and item name for each employee and then replace null values of amount and item name with those values. For validation use COUNT function to calculate the number of rows with values of amount and item name as null. If the number of rows is zero then table is updated correctly
I am new in Oracle SQL and I am trying to make an update of a table with the next context:
I have a table A:
+---------+---------+---------+----------+
| ColumnA | name | ColumnC | Column H |
+---------+---------+---------+----------+
| 1 | Harry | null | null |
| 2 | Harry | null | null |
| 3 | Harry | null | null |
+---------+---------+---------+----------+
And a table B:
+---------+---------+---------+
| name | ColumnE | ColumnF |
+---------+---------+---------+
| Harry | a | d |
| Ron | b | e |
| Hermione| c | f |
+---------+---------+---------+
And I want to update the table A so that the result will be the next:
+---------+---------+---------+----------+
| ColumnA | name | ColumnC | Column H |
+---------+---------+---------+----------+
| 1 | Harry | a | d |
| 2 | Harry | a | d |
| 3 | Harry | a | d |
+---------+---------+---------+----------+
How could I do it?
merge into tableA a
using tableB b
on (a.name=b.name)
when matched then update set
columnC = b.columnE,
columnH = b.columnF
create table tableA (columnC varchar2(20), columnH varchar2(20), name varchar2(20), columnA number);
create table tableB (columnE varchar2(20), columnF varchar2(20), name varchar2(20));
insert into tableA values (null, null,'Harry',1);
insert into tableA values (null, null,'Harry',3);
insert into tableA values (null, null,'Harry',3);
insert into tableB values ('a', 'd','Harry');
insert into tableB values ('b', 'e','Ron');
insert into tableB values ('c', 'f','Hermione');
select * from tableA;
merge into tableA a
using tableB b
on (a.name=b.name)
when matched then update set
columnC = b.columnE,
columnH = b.columnF;
select * from tableA;
I got no error
UPDATE tableA t1
SET (ColumnC, ColumnH) = (SELECT t2.ColumnE, t2.ColumnF
FROM table2 t2
WHERE t1.name = t2.name)
WHERE EXISTS (
SELECT 1
FROM table2 t2
WHERE t1.name = t2.name)
This should work. You can refer to this answer for more info:
Oracle SQL: Update a table with data from another table
I think you can use below query and update your table A.
Update all rows with 'a' and 'd';
update table A
set (columnC , columnh ) = (SELECT COLUMNE,COLUMNF
FROM TABLE B
where b.name =a.name);
Alternatively you can also use:
UPDATE (SELECT T2.COLUMNE COLE,
T2.COLUMNF COLF,
T1.COLUMNC COLC,
T1.COLUMNH COLH
FROM tableB T2,
tableA T1
WHERE T1.NAME = T2.NAME)
SET COLC = COLE,
COLH = COLF ;
and Output is :
+---------+---------+---------+----------+
| ColumnA | name | ColumnC | Column H |
+---------+---------+---------+----------+
| 1 | Harry | a | d |
| 2 | Harry | a | d |
| 3 | Harry | a | d |
+---------+---------+---------+----------+
I have a table with three columns with double values, but no double rows. Now I want to split this table in two table with unique values and a link table. I think the Problem gets clearer when I Show you example tables:
Original:
| ID | Column_1 | Column_2 | Column_3 |
|----|----------|----------|----------|
| 1 | A | 123 | A1 |
| 2 | A | 123 | A2 |
| 3 | B | 234 | A2 |
| 4 | C | 456 | A1 |
Table_1
| ID | Column_1 | Column_2 |
|----|----------|----------|
| 1 | A | 123 |
| 2 | B | 234 |
| 3 | C | 456 |
Table_2
| ID | Column_3 |
|----|----------|
| 1 | A1 |
| 2 | A2 |
Link-Table
| ID | fk1 | fk2 |
|----|-----|-----|
| 1 | 1 | 1 |
| 2 | 1 | 2 |
| 3 | 2 | 2 |
| 4 | 3 | 1 |
Table_1 I created like this:
INSERT INTO Table_1(Column_1, Column_2)
SELECT DISTINCT Column_1, Column_2 FROM Original
WHERE Original.Column_1 NOT IN (SELECT Column_1 FROM Table_1)
Table_2 I created in the same way.
The question now is, how to create the Link-Table?
The original table does grow continuesly, so only new entries should be added.
Do I have to use a Cursor, or is there a better way?
SOLUTION:
MERGE Link_Table AS LT
USING (SELECT DISTINCT T1.ID AS T1ID, T2.ID AS T2ID FROM Original AS O
INNER JOIN Table_1 AS T1 ON T1.Column_1 = O.Column_1
INNER JOIN Table_2 AS T2 ON T2.Column_3 = O.Column_3) AS U
ON LT.fk1 = U.T1ID
WHEN NOT MATCHED THEN
INSERT (fk1, fk2)
VALUES (U.T1ID, U.T2ID);
You can JOIN all 3 tables to get proper data for link table:
--INSERT INTO [Link-Table]
SELECT t1.ID,
t2.ID
FROM Original o
INNER JOIN Table_1 t1
ON t1.Column_1 = o.Column_1
INNER JOIN Table_2 t2
ON t2.Column_3 = o.Column_3
If your original table will grow, then you need to use MERGE to update/insert new data.
You have to inner join your Original,Table_1 and Table_2 to get the desired result.
Try like this, Its similar to gofr1 post.
DECLARE #orginal TABLE (
ID INT
,Column_1 VARCHAR(10)
,Column_2 INT
,Column_3 VARCHAR(10)
)
DECLARE #Table_1 TABLE (
ID INT
,Column_1 VARCHAR(10)
,Column_2 INT
)
DECLARE #Table_2 TABLE (
ID INT
,Column_3 VARCHAR(10)
)
Insert into #orginal values
(1,'A',123,'A1')
,(2,'A',123,'A2')
,(3,'B',234,'A2')
,(4,'C',456,'A1')
Insert into #Table_1 values
(1,'A',123)
,(2,'B',234)
,(3,'C',456)
Insert into #Table_2 values
(1,'A1')
,(2,'A2')
SELECT O.ID
,T1.ID
,T2.ID
FROM #orginal O
INNER JOIN #Table_1 T1 ON T1.Column_1 = O.Column_1
INNER JOIN #Table_2 T2 ON T2.Column_3 = O.Column_3
I need to write a statement joining two tables based on dates.
Table 1 contains time recording entries.
+----+-----------+--------+---------------+
| ID | Date | UserID | DESC |
+----+-----------+--------+---------------+
| 1 | 1.10.2010 | 5 | did some work |
| 2 | 1.10.2011 | 5 | did more work |
| 3 | 1.10.2012 | 4 | me too |
| 4 | 1.11.2012 | 4 | me too |
+----+-----------+--------+---------------+
Table 2 contains the position of each user in the company. The ValidFrom date is the date at which the user has been or will be promoted.
+----+-----------+--------+------------+
| ID | ValidFrom | UserID | Pos |
+----+-----------+--------+------------+
| 1 | 1.10.2009 | 5 | PM |
| 2 | 1.5.2010 | 5 | Senior PM |
| 3 | 1.10.2010 | 4 | Consultant |
+----+-----------+--------+------------+
I need a query which outputs table one with one added column which is the position of the user at the time the entry has been made. (the Date column)
All date fileds are of type date.
I hope someone can help. I tried a lot but don't get it working.
Try this using a subselect in the where clause:
SQL Fiddle
MS SQL Server 2008 Schema Setup:
CREATE TABLE TimeRecord
(
ID INT,
[Date] Date,
UserID INT,
Description VARCHAR(50)
)
INSERT INTO TimeRecord
VALUES (1,'2010-01-10',5,'did some work'),
(2, '2011-01-10',5,'did more work'),
(3, '2012-01-10', 4, 'me too'),
(4, '2012-11-01',4,'me too')
CREATE TABLE UserPosition
(
ID Int,
ValidFrom Date,
UserId INT,
Pos VARCHAR(50)
)
INSERT INTO UserPosition
VALUES (1, '2009-01-10', 5, 'PM'),
(2, '2010-05-01', 5, 'Senior PM'),
(3, '2010-01-10', 4, 'Consultant ')
Query 1:
SELECT TR.ID,
TR.[Date],
TR.UserId,
TR.Description,
UP.Pos
FROM TimeRecord TR
INNER JOIN UserPosition UP
ON UP.UserId = TR.UserId
WHERE UP.ValidFrom = (SELECT MAX(ValidFrom)
FROM UserPosition UP2
WHERE UP2.UserId = UP.UserID AND
UP2.ValidFrom <= TR.[Date])
Results:
| ID | Date | UserId | Description | Pos |
|----|------------|--------|---------------|-------------|
| 1 | 2010-01-10 | 5 | did some work | PM |
| 2 | 2011-01-10 | 5 | did more work | Senior PM |
| 3 | 2012-01-10 | 4 | me too | Consultant |
| 4 | 2012-11-01 | 4 | me too | Consultant |
You can do it using OUTER APPLY:
SELECT ID, [Date], UserID, [DESC], x.Pos
FROM table1 AS t1
OUTER APPLY (
SELECT TOP 1 Pos
FROM table2 AS t2
WHERE t2.UserID = t1.UserID AND t2.ValidFrom <= t1.[Date]
ORDER BY t2.ValidFrom DESC) AS x(Pos)
For every row of table1 OUTER APPLY operation fetches all table2 rows of the same user that have a ValidFrom date that is older or the same as [Date]. These rows are sorted in descending order and the most recent of these is finally returned.
Note: If no match is found by the OUTER APPLY sub-query then a NULL value is returned, meaning that no valid position exists in table2 for the corresponding record in table1.
Demo here
This works by using a rank function and subquery. I tested it with some sample data.
select sub.ID,sub.Date,sub.UserID,sub.Description,sub.Position
from(
select rank() over(partition by t1.userID order by t2.validfrom desc)
as 'rank', t1.ID as'ID',t1.Date as'Date',t1.UserID as'UserID',t1.Descr
as'Description',t2.pos as'Position', t2.validfrom as 'validfrom'
from temployee t1 inner join jobs t2 on -- replace join tables with your own table names
t1.UserID=t2.UserID
) as sub
where rank=1
This query would work
select t1.*,t2.pos from Table1 t1 left outer join Table2 t2 on
t1.Date=t2.Date and t1.UserID=t2.UserID