I have to update a table in my sql server with data from an excel sheet It is a lot of parts I need to update and I need to update two columns in a 12 column table. What would be the easiest way doing this?
I was thinking access? I tried to do a SSIS job on the specific two columns but it failed.
Please help and thanks.
One way of doing it is to import the Excel file into your sql database and then do the update with a simple update statement like his:
UPDATE YourTable
SET Column1 = ExcelImported.Column1,
Column2 = ExcelImported.Column2
FROM YourTable
JOIN ExcelImported
ON YourTable.Key = ExcelImported.Key
Related
I am trying to use Update Set syntax to copy one column into another but its not working out. Any idea what to do here? Thankyou for replies.
SELECT PARSE_DATE('%B %d, %Y',SaleDate)
From sql-practice-350112.Nashville_housing.housing_sales
LIMIT 1000;
UPDATE sql-practice-350112.Nashville_housing.housing_sales
SET Date_of_sale = SaleDate
I added the new column Date_of_sale from schema edit so dont have code for it.
So perhaps the title is a little confusing. If you can suggest better wording for that please let me know and i'll update.
Here's the issue. I've got a table with many thousands of rows and i need to update a few thousand of those many to store latest email data.
For example:
OldEmail#1.com => NewEmail#1.com
OldEmail#2.com => NewEmail#2.com
I've got a list of old emails ('OldEmail#1.com','OldEmail#2.com') and a list of the new ('NewEmail#1.com','NewEmail#2.com'). The HOPE was was to sort of do it simply with something like
UPDATE Table
SET Email = ('NewEmail#1.com','NewEmail#2.com')
WHERE Email = ('OldEmail#1.com','OldEmail#2.com')
I hope that makes sense. Any questions just ask. Thanks!
You could use a case expression:
update mytable
set email = case email
when 'OldEmail#1.com' then 'NewEmail#1.com'
when 'OldEmail#2.com' then 'NewEmail#2.com'
end
where email in ('OldEmail#1.com','OldEmail#2.com')
Or better yet, if you have a large list of values, you might create a table to store them (like myref(old_email, new_email)) and join it in your update query, like so:
update t
set t.email = r.new_email
from mytable t
inner join myref r on r.old_email = t.email
The actual syntax for update/join does vary accross databases - the above SQL Server syntax.
With accuracy to the syntax in particular DBMS:
WITH cte AS (SELECT 'NewEmail#1.com' newvalue, 'OldEmail#1.com' oldvalue
UNION ALL
SELECT 'NewEmail#2.com', 'OldEmail#2.com')
UPDATE table
SET table.email = cte.newvalue
FROM cte
WHERE table.email = cte.oldvalue
or, if CTE is not available,
UPDATE table
SET table.email = cte.newvalue
FROM (SELECT 'NewEmail#1.com' newvalue, 'OldEmail#1.com' oldvalue
UNION ALL
SELECT 'NewEmail#2.com', 'OldEmail#2.com') cte
WHERE table.email = cte.oldvalue
Consider prepared statement for rows update in large batches.
Basically it works as following :
database complies a query pattern you provide the first time, keep the compiled result for current connection (depends on implementation).
then you updates all the rows, by sending shortened label of the prepared function with different parameters in SQL syntax, instead of sending entire UPDATE statement several times for several updates
the database parse the shortened label of the prepared function , which is linked to the pre-compiled result, then perform the updates.
next time when you perform row updates, the database may still use the pre-compiled result and quickly complete the operations (so the first step above can be skipped).
Here is PostgreSQL example of prepare statement, many of SQL databases (e.g. MariaDB,MySQL, Oracle) also support it.
first off, noob alert! :))
I need to construct a query that runs on many tables. The tables vary on name just on the last digits as per client code. The thing is, the values that change aren't sequential so looping as in i=1,2,3,... does not work. A possible solution would be to have those values on a given field on an other table.
Here is the code for the first two clients 015 and 061. The leading zero(s) must are essential.
SELECT LnMov2017015.CConta, RsMov2017015.DR, RsMov2017015.NInt, "015" AS CodCli
FROM LnMov2017015 INNER JOIN RsMov2017015 ON LnMov2017015.NReg = RsMov2017015.NReg
WHERE (((LnMov2017015.CConta)="6" And (LnMov2017015.CConta)="7") AND ((RsMov2017015.DR)=9999))
UNION SELECT LnMov2017061.CConta, RsMov2017061.DR, RsMov2017061.NInt, "061" AS CodCli
FROM LnMov2017061 INNER JOIN RsMov2017061 ON LnMov2017061.NReg = RsMov2017061.NReg
WHERE (((LnMov2017061.CConta)="6" And (LnMov2017061.CConta)="7") AND ((RsMov2017061.DR)=9999))
...
So for the first SELECT the table Name is LnMov2017015, the ending 015 being the value, the client code, that changes from table to table e.g. in the second SELECT the table name is LnMov2017061 (061) being what distinguishes the table.
For each client code there are two tables e.g. LnMov2017015 and RsMov2017015 (LnMov2017061 and RsMov2017061 for the second set client shown).
Is there a way that I can build the SQL, based upon the example SQL above?
Does anyone have an idea for a solution? :)
Apparently it is possible to build a query object to read data in another db without establishing table link. Just tested and to my surprise it works. Example:
SELECT * FROM [SoilsAgg] IN "C:\Users\Owner\June\DOT\Lab\Editing\ConstructionData.accdb";
I was already using this structure in VBA to execute DELETE and UPDATE action statements.
Solution found :)
Thank you all for your input.
Instead of linking 100 tables (password protected), I'll access them with SLQ
FROM Table2 IN '' ';database=C:\db\db2.mdb;PWD=mypwd'
And merge them all with a query, before any other thing!
I am stuck in the following query. This was working properly on mySQL but it gives error on MSSQL-2005. The main purpose of the query is to copy data from one table to another without duplicates based on multiple columns comparison from both tables.
I can do this to compare one column for duplication, but I can't do when I compare more then one column for duplication.
Here is my query.
INSERT INTO eBayStockTaking (OrderLineItemID,Qty,SKU,SubscriberID,eBayUserID)
SELECT OrderLineItemID,Qty,SKU,SubscriberID,eBayUserID
FROM tempEBayStockTaking WHERE (OrderLineItemID,SubscriberID,eBayUserID)
Not In (SELECT OrderLineItemID,SubscriberID,eBayUserID FROM eBayStockTaking)
Note: I have been through many similar questions but all in vain.
Thanks
Rather try NOT EXISTS
Something like
INSERT INTO eBayStockTaking (OrderLineItemID,Qty,SKU,SubscriberID,eBayUserID)
SELECT OrderLineItemID,
Qty,
SKU,
SubscriberID,
eBayUserID
FROM tempEBayStockTaking t
WHERE Not EXISTS (
SELECT *
FROM eBayStockTaking e
WHERE e.OrderLineItemID = t.OrderLineItemID
AND e.SubscriberID = t.SubscriberID
AND e.eBayUserID = t.eBayUserID)
)
I know MySQL allows Row Subqueries, nut SQL Server does not allow this.
I am in a situation where I am having to update about 12,000 items in my DB.
Each row needs to mirror an excel file that I made previously.
I have made the file that creates each line of SQL statement, but I am not sure if I can run each line in a single query.
This is an example of what I am trying to do.
UPDATE [STORESQL].[dbo].[RPT_ITM_D] SET F1301='1.29' WHERE F01='0000000000001'
UPDATE [STORESQL].[dbo].[RPT_ITM_D] SET F1301='1.39' WHERE F01='0000000000002'
Will this work, or are there any better options for what I am trying to achieve?
Each item will have a unique value and the column to be changed will have a unique value as well. I don't see how I could make this work with a loop, or any other methods I've found so far. I realize that this might take a long time to process, but time is not an issue.
Thank you in advance
Something like this is the best you can do:-
UPDATE [STORESQL].[dbo].[RPT_ITM_D]
SET F1301 =
case F01
when '0000000000001' then '1.29'
when '0000000000002' then '1.30'
ELSE F1301
end
Other than that, running multiple updates is the way to go.
Yes, you could add all the single-line-Update-statements in one query like you are doing.
Take a look at MERGE e.g. something like:
MERGE INTO [STORESQL].[dbo].[RPT_ITM_D]
USING (
VALUES ('1.29', '0000000000001'),
('1.39', '0000000000002')
) AS source (F1301, F01)
ON F01 = source.F01
WHEN MATCHED THEN
UPDATE
SET F1301 = source.F1301;
...but using a table value constructor in this way would not scale to 12,000 rows! So look to first copying the data from Excel to a table on the server, then use the table as the source e.g.
MERGE INTO [STORESQL].[dbo].[RPT_ITM_D]
USING [STORESQL].[dbo].MyStagingTable AS source
ON F01 = source.F01
WHEN MATCHED THEN
UPDATE
SET F1301 = source.F1301;
If you have a significant amount of data to update, it may be advantageous to load the excel file into the database as a table, then update your table based on the data in this loaded table.
UPDATE RPT_ITM_D
SET F1301 = NewTable.Value
FROM RPT_ITM_D INNER JOIN NewTable ON (NewTable.F01 = RPT_ITEM_D.F01);
If you're on SQL server, you could use SSIS to load the file pretty quickly.
I think the best way is to import the Excel sheet into a table in your SQL database. From there you could be able to use a join to create a single update statement for all 12,000 items.
For information on how to import Excel sheet into SQL: http://msdn.microsoft.com/en-us/library/ms141209.aspx
The update statement would then look something like this:
UPDATE itemTable
SET F1301 = excelTable.<column with your value>
FROM [STORESQL].[dbo].[RPT_ITM_D] itemTable inner join [STORESQL].[dbo].[importedExcelTableName] excelTable on itemTable.F01 = excelTable.<column with the item code>
If you aren't sure if this would work safely, you can try this query for a single value by simple adding:
WHERE itemTable.F01 = '0000000000001'
You can use the concatenate function in Excel to frame a query, All you need to do is to frame a single update query and drag the same for the rest
concatenate("Update set =",,",where =
",,";")
Use the above format and drag the cell till the end or double click on the bottom right corner for Auto fill of the Update statement. I beleive this is the shortest way possible and run it in a single Go.
Make a unique constraint on the F01 column and then use an insert statement with an 'ON DUPLICATE KEY UPDATE' statement.
INSERT INTO [STORESQL].[dbo].[RPT_ITM_D] (F01, F1301)
VALUES
('0000000000001','1.29'),
('0000000000002','1.39')
ON DUPLICATE KEY UPDATE F1301 = VALUES(F1301);