I have 2 tables
LoanApplications (Id, Name, CreationDate, LoanApplicationStatusId)
Positions(Id, Name, CreationDate, LoanApplicationId)
I need to find all loan applications that have more than 1 position and update LoanApplicationStatusId to 2
I write code to get these LoanApplications like this
SELECT e.Id, count(Name) FROM LoanApplications e
INNER JOIN Positions d ON e.Id=d.LoanApplicationId
GROUP BY e.Id
HAVING COUNT(Name)>1
But I don't understand how to make an update now.
Can you help me?
Straight ahead would be a simple subselect
UPDATE LoanApplications l
SET LoanApplicationStatusId = 2
where (select count(1) from Positions p where p.LoanApplicationId = l.id) > 1
Simply select id of apps which have more than one row, and use it in UPDATE as a condition
UPDATE LoanApplications
JOIN ( SELECT LoanApplicationId
FROM Positions
GROUP BY LoanApplicationId
HAVING COUNT(LoanApplicationId) > 1 ) multi_positional ON id = LoanApplicationId
SET LoanApplicationStatusId = 2
Unsafe query: 'Update' statement without 'where' updates all table rows at once Got this stuff – Eugene Sukh
Convert this query to
UPDATE LoanApplications
JOIN ( SELECT LoanApplicationId
FROM Positions
GROUP BY LoanApplicationId
HAVING COUNT(LoanApplicationId) > 1 ) multi_positional
SET LoanApplicationStatusId = 2
WHERE LoanApplications.id = multi_positional.LoanApplicationId
I have two select queries like this:
SELECT COUNT(WARD_id)
FROM IP_Admission
WHERE (Status = 'V' OR Status = 'D') AND WARD_ID = 1
SELECT BED_STRENGTH
FROM Ward_Master
WHERE Ward_ID = 1
Output of the query is
2
6
Now I need answer 4. Any help appreciated.
You may try like this:
declare #a int
declare #b int
SELECT #a = COUNT(WARD_id) FROM IP_Admission WHERE (Status='V' OR Status='D') AND WARD_ID=1
SELECT #b = BED_STRENGTH FROM Ward_Master WHERE Ward_ID=1
select #b - #a
select count(i.ward_id) - w.bed_strength as Diff from
ip_admission i join ward_master w on w.ward_id=i.ward_id
where (status='V' or status='D') and i.ward_id=1
group by w.bed_strength
Try This for all ward ID's
SELECT M.Ward_ID,BED_STRENGTH -COUNT(WARD_id)
FROM IP_Admission A
JOIN Ward_Master M ON A.WARD_ID = M.WARD_ID
WHERE (A.Status='V' OR A.Status='D')
GROUP BY M.Ward_ID
You can use inner join like this. Please let me know if this doesn't work.
create table #Tmp1
(
Ward_Id INT,
Status Char(1)
)
create table #tmp2
(
Ward_Id INT,
BED_STRENGTH INT
)
INSERT INTO #Tmp1 VALUES (1,'V'),(1,'D')
INSERT INTO #tmp2 VALUES (1,6)
SELECT COUNT(WARD_id)
FROM #Tmp1
WHERE (Status='V' OR Status='D') AND WARD_ID=1
SELECT BED_STRENGTH FROM #Tmp2 WHERE Ward_ID=1
SELECT #tmp2.BED_STRENGTH - COUNT(#tmp1.WARD_id)
FROM #Tmp1
INNER JOIN #tmp2 ON #tmp2.Ward_Id = #tmp1.Ward_Id
WHERE (Status='V' OR Status='D') AND #tmp1.WARD_ID=1
GROUP BY #tmp2.BED_STRENGTH
DROP TABLE #Tmp1
DROP TABLE #Tmp2
Since you are pulled these values from two different tables, the best way to do this will to be to join the table on ward id.
SELECT wm.BED_STRENGTH - COUNT(ip.WARD_id)
FROM Ward_Master wm inner join IP_Admission ip
On wm.ward_id = ip.ward_id
WHERE (ip.Status='V' OR ip.Status='D')
Group by wm.BED_STRENGTH
This should work, but it might not depending on the schema. The advantage with this method is that it will find the value for all ward ids.
The simplest solution is:
SELECT (subquery1) - (subquery2)
This will only show the value for the ward id that you specify.
Thanks everyone i solved my query as
SELECT M.Bed_Strength - COUNT(A.WARD_id) as diff
FROM IP_Admission A
JOIN Ward_Master M ON A.WARD_ID = M.WARD_ID
WHERE (A.Status='V' OR A.Status='D') and M.Ward_ID=1 group by M.Bed_Strength;
This MySQL statement give me all id_duel_player for player with id_player=30 and it work fine.
SELECT b.id_duel_player
FROM duels a
INNER JOIN duel_player b
ON a.id_duel = b.id_duel
WHERE id_player = 30
UNION ALL
SELECT c.id_duel_player
FROM duel_player c
INNER JOIN
(
SELECT aa.*
FROM duels aa
INNER JOIN duel_player bb
ON aa.id_duel = bb.id_duel
WHERE bb.id_player = 30
) d ON c.id_duel = d.id_duel AND c.id_player <> 30
I want to make MySQL statement for UPDATE (fields from duel_player table) all of this id_duel_player that returns this select statement.
UPDATE duel_player
SET num = 2,
total = 5
WHERE (duel_player.id_duel_player = id_duel_player's from above SELECT statement)
I want most effective and fastest way to do this.
Thanks
For 200-400 rows it's likely fastest to create a temporary table with the results, and then do the UPDATE with a join:
CREATE TEMPORARY TABLE id_duel_players AS
SELECT b.id_duel_player as id FROM duels a ...
UPDATE duel_player
JOIN id_duel_players ON duel_player.id_duel_player = id_duel_players.id
SET num = 2,
total = 5
For smaller result sets you may find the IN operator sufficiently fast (... WHERE id_duel_player IN (SELECT ...)), but I've found it unreliable for result sets with hundreds of rows. (Unreliable = suddenly no matches are found, no idea why, I haven't investigated.)
I need to update multiple records in a table based upon the sum of some values in another table. Here is my query:
UPDATE aallinnot2 c SET c.Energ_Kcal = ( SELECT d.id1, SUM( c.Energ_Kcal)
FROM aaingred a
LEFT JOIN aaweight b ON a.unit = b.uni
LEFT JOIN aallinnot2 c ON a.mfdfsds = c.NDB_No
LEFT JOIN aalinfsds d ON a.fsdsnum = d.id1
WHERE d.own_id =42
GROUP BY id1 )
WHERE c.NDB_No
IN ( SELECT DISTINCT `fsdsnum`
FROM `aaingred`
WHERE `usernum` LIKE '42'
)
MySQL said:
#1093 - You can't specify target table 'c' for update in FROM clause
Unfortunately, I don't know how to get my values without referencing target table 'c'! Is there a workaround for this?
With the crazy table/column names and indecipherable logic, this might be the ugliest query I have ever seen. Congrats. :)
I think the following should work (or this approach). The main problem was untangling the group-by expression-- you need to give the database engine a dataset where each row in the target table is joined to a set that contains the updated value for that row. So here, select the new values in a sub-query, then join that sub-query to the original table.
EDIT Fixed some syntax
UPDATE
(
SELECT d.id1, SUM (c.Energ_Kcal) AS Sum_Energ_Kcal
FROM aaingred a
LEFT JOIN aaweight b ON a.unit = b.uni
LEFT JOIN aallinnot2 c ON a.mfdfsds = c.NDB_No
LEFT JOIN aalinfsds d ON a.fsdsnum = d.id1
WHERE d.own_id =42
GROUP BY id1
) d
,aaingred a, aallinnot2 d
SET Energ_Kcal = d.Sum_Energ_Kcal
WHERE d.id1 = a.fsdsnum
AND a.mfdfsds = aallinnot2.NDB_No
AND c.NDB_No IN (
SELECT DISTINCT `fsdsnum`
FROM `aaingred`
WHERE `usernum` LIKE '42'
);
I'm not sure about mysql, but with SQL Server the statement would be something like this:
UPDATE aallinnot2
SET Energ_Kcal = (
SELECT SUM( c.Energ_Kcal)
FROM aaingred a
LEFT JOIN aaweight b ON a.unit = b.uni
LEFT JOIN aallinnot2 c ON a.mfdfsds = c.NDB_No
LEFT JOIN aalinfsds d ON a.fsdsnum = d.id1
WHERE d.own_id =42)
WHERE c.NDB_No
IN ( SELECT DISTINCT `fsdsnum`
FROM `aaingred`
WHERE `usernum` LIKE '42')
You can't alias the table to be updated in the UPDATE clause, but you can in the FROM clause.
I need to check (from the same table) if there is an association between two events based on date-time.
One set of data will contain the ending date-time of certain events and the other set of data will contain the starting date-time for other events.
If the first event completes before the second event then I would like to link them up.
What I have so far is:
SELECT name as name_A, date-time as end_DTS, id as id_A
FROM tableA WHERE criteria = 1
SELECT name as name_B, date-time as start_DTS, id as id_B
FROM tableA WHERE criteria = 2
Then I join them:
SELECT name_A, name_B, id_A, id_B,
if(start_DTS > end_DTS,'VALID','') as validation_check
FROM tableA
LEFT JOIN tableB ON name_A = name_B
Can I then, based on my validation_check field, run a UPDATE query with the SELECT nested?
You can actually do this one of two ways:
MySQL update join syntax:
UPDATE tableA a
INNER JOIN tableB b ON a.name_a = b.name_b
SET validation_check = if(start_dts > end_dts, 'VALID', '')
-- where clause can go here
ANSI SQL syntax:
UPDATE tableA SET validation_check =
(SELECT if(start_DTS > end_DTS, 'VALID', '') AS validation_check
FROM tableA
INNER JOIN tableB ON name_A = name_B
WHERE id_A = tableA.id_A)
Pick whichever one seems most natural to you.
UPDATE
`table1` AS `dest`,
(
SELECT
*
FROM
`table2`
WHERE
`id` = x
) AS `src`
SET
`dest`.`col1` = `src`.`col1`
WHERE
`dest`.`id` = x
;
Hope this works for you.
Easy in MySQL:
UPDATE users AS U1, users AS U2
SET U1.name_one = U2.name_colX
WHERE U2.user_id = U1.user_id
If somebody is seeking to update data from one database to another no matter which table they are targeting, there must be some criteria to do it.
This one is better and clean for all levels:
UPDATE dbname1.content targetTable
LEFT JOIN dbname2.someothertable sourceTable ON
targetTable.compare_field= sourceTable.compare_field
SET
targetTable.col1 = sourceTable.cola,
targetTable.col2 = sourceTable.colb,
targetTable.col3 = sourceTable.colc,
targetTable.col4 = sourceTable.cold
Traaa! It works great!
With the above understanding, you can modify the set fields and "on" criteria to do your work. You can also perform the checks, then pull the data into the temp table(s) and then run the update using the above syntax replacing your table and column names.
Hope it works, if not let me know. I will write an exact query for you.
UPDATE
receipt_invoices dest,
(
SELECT
`receipt_id`,
CAST((net * 100) / 112 AS DECIMAL (11, 2)) witoutvat
FROM
receipt
WHERE CAST((net * 100) / 112 AS DECIMAL (11, 2)) != total
AND vat_percentage = 12
) src
SET
dest.price = src.witoutvat,
dest.amount = src.witoutvat
WHERE col_tobefixed = 1
AND dest.`receipt_id` = src.receipt_id ;
Hope this will help you in a case where you have to match and update between two tables.
I found this question in looking for my own solution to a very complex join. This is an alternative solution, to a more complex version of the problem, which I thought might be useful.
I needed to populate the product_id field in the activities table, where activities are numbered in a unit, and units are numbered in a level (identified using a string ??N), such that one can identify activities using an SKU ie L1U1A1. Those SKUs are then stored in a different table.
I identified the following to get a list of activity_id vs product_id:-
SELECT a.activity_id, w.product_id
FROM activities a
JOIN units USING(unit_id)
JOIN product_types USING(product_type_id)
JOIN web_products w
ON sku=CONCAT('L',SUBSTR(product_type_code,3), 'U',unit_index, 'A',activity_index)
I found that that was too complex to incorporate into a SELECT within mysql, so I created a temporary table, and joined that with the update statement:-
CREATE TEMPORARY TABLE activity_product_ids AS (<the above select statement>);
UPDATE activities a
JOIN activity_product_ids b
ON a.activity_id=b.activity_id
SET a.product_id=b.product_id;
I hope someone finds this useful
UPDATE [table_name] AS T1,
(SELECT [column_name]
FROM [table_name]
WHERE [column_name] = [value]) AS T2
SET T1.[column_name]=T2.[column_name] + 1
WHERE T1.[column_name] = [value];
You can update values from another table using inner join like this
UPDATE [table1_name] AS t1 INNER JOIN [table2_name] AS t2 ON t1.column1_name] = t2.[column1_name] SET t1.[column2_name] = t2.column2_name];
Follow here to know how to use this query http://www.voidtricks.com/mysql-inner-join-update/
or you can use select as subquery to do this
UPDATE [table_name] SET [column_name] = (SELECT [column_name] FROM [table_name] WHERE [column_name] = [value]) WHERE [column_name] = [value];
query explained in details here http://www.voidtricks.com/mysql-update-from-select/
You can use:
UPDATE Station AS st1, StationOld AS st2
SET st1.already_used = 1
WHERE st1.code = st2.code
For same table,
UPDATE PHA_BILL_SEGMENT AS PHA,
(SELECT BILL_ID, COUNT(REGISTRATION_NUMBER) AS REG
FROM PHA_BILL_SEGMENT
GROUP BY REGISTRATION_NUMBER, BILL_DATE, BILL_AMOUNT
HAVING REG > 1) T
SET PHA.BILL_DATE = PHA.BILL_DATE + 2
WHERE PHA.BILL_ID = T.BILL_ID;
I had an issue with duplicate entries in one table itself. Below is the approaches were working for me. It has also been advocated by #sibaz.
Finally I solved it using the below queries:
The select query is saved in a temp table
IF OBJECT_ID(N'tempdb..#New_format_donor_temp', N'U') IS NOT NULL
DROP TABLE #New_format_donor_temp;
select *
into #New_format_donor_temp
from DONOR_EMPLOYMENTS
where DONOR_ID IN (
1, 2
)
-- Test New_format_donor_temp
-- SELECT *
-- FROM #New_format_donor_temp;
The temp table is joined in the update query.
UPDATE de
SET STATUS_CD=de_new.STATUS_CD, STATUS_REASON_CD=de_new.STATUS_REASON_CD, TYPE_CD=de_new.TYPE_CD
FROM DONOR_EMPLOYMENTS AS de
INNER JOIN #New_format_donor_temp AS de_new ON de_new.EMP_NO = de.EMP_NO
WHERE
de.DONOR_ID IN (
3, 4
)
I not very experienced with SQL please advise any better approach you know.
Above queries are for MySql server.
if you are updating from a complex query. The best thing is create temporary table from the query, then use the temporary table to update as one query.
DROP TABLE IF EXISTS cash_sales_sums;
CREATE TEMPORARY TABLE cash_sales_sums as
SELECT tbl_cash_sales_documents.batch_key, COUNT(DISTINCT tbl_cash_sales_documents.cash_sale_number) no_of_docs,
SUM(tbl_cash_sales_documents.paid_amount) paid_amount, SUM(A.amount - tbl_cash_sales_documents.bonus_amount - tbl_cash_sales_documents.discount_given) amount,
SUM(A.recs) no_of_entries FROM
tbl_cash_sales_documents
RIGHT JOIN(
SELECT
SUM(
tbl_cash_sales_transactions.amount
)amount,
tbl_cash_sales_transactions.cash_sale_document_id,
COUNT(transaction_id)recs
FROM
tbl_cash_sales_transactions
GROUP BY
tbl_cash_sales_transactions.cash_sale_document_id
)A ON A.cash_sale_document_id = tbl_cash_sales_documents.cash_sale_id
GROUP BY
tbl_cash_sales_documents.batch_key
ORDER BY batch_key;
UPDATE tbl_cash_sales_batches SET control_totals = (SELECT amount FROM cash_sales_sums WHERE cash_sales_sums.batch_key = tbl_cash_sales_batches.batch_key LIMIT 1),
expected_number_of_documents = (SELECT no_of_docs FROM cash_sales_sums WHERE cash_sales_sums.batch_key = tbl_cash_sales_batches.batch_key),
computer_number_of_documents = expected_number_of_documents, computer_total_amount = control_totals
WHERE batch_key IN (SELECT batch_key FROM cash_sales_sums);
INSERT INTO all_table
SELECT Orders.OrderID,
Orders.CustomerID,
Orders.Amount,
Orders.ProductID,
Orders.Date,
Customer.CustomerName,
Customer.Address
FROM Orders
JOIN Customer ON Orders.CustomerID=Customer.CustomerID
WHERE Orders.OrderID not in (SELECT OrderID FROM all_table)