I have a column, sort_order in a table that contains a string of numbers, a delimiter and some P values:
1150||P||1168||1144||1149||1147||1164||1152||P||1148||1162||1163||P||1156||1157||1154||
I would like to replace any P values in this string with another value from the event_tile_id column of another table.
So far I've drafted this SQL below with no luck. What changes can I make to this Query to get the effect I need?
`SELECT sort_order,
(
REPLACE(sort_order,'P',
(SELECT TOP 1 event_tile_id
FROM daily_email_sales_today)
)
)
as sort_order
FROM daily_email_preview`
Removed "default_SaleID" from Query. Replace should now have 4 arguments.
This is how I would do it.
Since you don't have any joins, why not do a simpler update query using a static value?
DECLARE #update VARCHAR(100)
SET #update = (SELECT TOP 1 event_tile_id FROM daily_email_sales_today)
update daily_email_preview
SET sort_order = replace(sort_order,'P', #update)
Or even,
update daily_email_preview
SET sort_order = replace(sort_order,'P', '<new value>')
Assuming you are using SQL Server.
Along the same thought process as #Eric_Hauenstein if you are running this in a TSQL process:
declare #rSTR as varchar(50)
SELECT TOP 1 #rSTR = event_tile_id FROM daily_email_sales_toda
SELECT sort_order, REPLACE(sort_order,'P', #rSTR) as sort_order
FROM daily_email_preview
Related
I am writing a stored procedure to get a particular value.
declare #num int
set #num = (SELECT Id
FROM [sometable]
WHERE Name like '%today%')
-- returns #num = 1
Select Value
FROM [anothertable]
where name like 'days1'
In the last line of the query I want to add "1" or any other number after 'days', depending on the variable #num.
How can I do it, sort of like how we use template literals in Javascript, using the ${} syntax but in SQL?
You can just use the first query as a sub-query of the second:
select [Value]
from anothertable
where [name] = Concat('days', (select Id from sometable where [Name] like '%today%'));
I am working on a sql database which will provide with data some grid. The grid will enable filtering, sorting and paging but also there is a strict requirement that users can enter free text to a text input above the grid for example
'Engine 1001 Requi' and that the result will contain only rows which in some columns contain all the pieces of the text. So one column may contain Engine, other column may contain 1001 and some other will contain Requi.
I created a technical column (let's call it myTechnicalColumn) in the table (let's call it myTable) which will be updated each time someone inserts or updates a row and it will contain all the values of all the columns combined and separated with space.
Now to use it with entity framework I decided to use a table valued function which accepts one parameter #searchQuery and it will handle it like this:
CREATE FUNCTION myFunctionName(#searchText NVARCHAR(MAX))
RETURNS #Result TABLE
( ... here come columns )
AS
BEGIN
DECLARE #searchToken TokenType
INSERT INTO #searchToken(token) SELECT value FROM STRING_SPLIT(#searchText,' ')
DECLARE #searchTextLength INT
SET #searchTextLength = (SELECT COUNT(*) FROM #searchToken)
INSERT INTO #Result
SELECT
... here come columns
FROM myTable
WHERE (SELECT COUNT(*) FROM #searchToken WHERE CHARINDEX(token, myTechnicalColumn) > 0) = #searchTextLength
RETURN;
END
Of course the solution works fine but it's kinda slow. Any hints how to improve its efficiency?
You can use an inline Table Valued Function, which should be quite a lot faster.
This would be a direct translation of your current code
CREATE FUNCTION myFunctionName(#searchText NVARCHAR(MAX))
RETURNS TABLE
AS RETURN
(
WITH searchText AS (
SELECT value token
FROM STRING_SPLIT(#searchText,' ') s(token)
)
SELECT
... here come columns
FROM myTable t
WHERE (
SELECT COUNT(*)
FROM searchText
WHERE CHARINDEX(s.token, t.myTechnicalColumn) > 0
) = (SELECT COUNT(*) FROM searchText)
);
GO
You are using a form of query called Relational Division Without Remainder and there are other ways to cut this cake:
CREATE FUNCTION myFunctionName(#searchText NVARCHAR(MAX))
RETURNS TABLE
AS RETURN
(
WITH searchText AS (
SELECT value token
FROM STRING_SPLIT(#searchText,' ') s(token)
)
SELECT
... here come columns
FROM myTable t
WHERE NOT EXISTS (
SELECT 1
FROM searchText
WHERE CHARINDEX(s.token, t.myTechnicalColumn) = 0
)
);
GO
This may be faster or slower depending on a number of factors, you need to test.
Since there is no data to test, i am not sure if the following will solve your issue:
-- Replace the last INSERT portion
INSERT INTO #Result
SELECT
... here come columns
FROM myTable T
JOIN #searchToken S ON CHARINDEX(S.token, T.myTechnicalColumn) > 0
I have a set of code that takes a string value, split it, and pass it to a table. The code works, but it runs slow. Any suggestion to modify the code and make it run faster would be greatly appreciated.
DECLARE #StrPropertyIDs VARCHAR(1000)
SET #StrPropertyIDs = '419,429,459'
DECLARE #TblPropertyID TABLE
(
property_id varchar(100)
)
INSERT INTO #TblPropertyID(property_id)
select x.Item
from dbo.SplitString(#StrPropertyIDs, ',') x
select *
from vw_nfpa_firstArv_RPT
where property_use IN
(
SELECT property_id
FROM #TblPropertyID
)
The best long term strategy here would be to move away from CSV data in your SQL tables if at all possible. As a quick fix here, we could try creating the table variable with an index on property_id:
DECLARE #TblPropertyID TABLE (
property_id varchar(100) INDEX idx CLUSTERED
);
This would make the WHERE IN clause of your query faster, though we could try rewriting it using EXISTS:
SELECT *
FROM vw_nfpa_firstArv_RPT t1
WHERE EXISTS (SELECT 1 FROM #TblPropertyID t2
WHERE t2.property_id = t1.property_use);
Note that this would only work on SQL Server 2014 or later.
Trying to update a SQL value with a concatenated value. Example, existing table has column named PONumber. Some numbers are stored by users as 4444 and some are stored as 4444.00. We want to update all the numbers listed as 4444 with the appended .00. I have the variables worked out and the concatenate worked out and binding the two together. I am just lost on the loop of getting and then updating it back. I am assuming I need a temp table for this or can I just use a set of variables for the old number, appending value, and new number?
DECLARE #ponumb nvarchar(255)
DECLARE #append nvarchar(255) = '-00'
DECLARE #BIND nvarchar(255) = CONCAT (#ponumb, #append)
CREATE TEMPORARY TABLE IF NOT EXISTS cache (SELECT #ponumb = PONumber FROM TABLE1 where PONumber not like '%-00%');
UPDATE TABLE1 SET PONumber=#BIND WHERE PONumber IN (SELECT PONumber FROM cache);
END;
Need to update the PONumbers to all have a trailing -00
Is this what you want to do?
UPDATE TABLE1
SET PONumber = PONumber + '.00'
WHERE PONumber NOT LIKE '%.00';
What would be the best approach in SQL Server 2008 to select something that can contain 10 list of data, then compare that data with a specific value in one of it's columns
So something like this below
SELECT bType FROM WORK_STATION WHERE nFileId = 123456789
Which could return either 1 - 10 values MAX (will return at least one value). Then to compare the data from that SQL statement above that we just selected to a specific value to something like
if bType = 1
--DO something
What is the best approach of doing something like this?
declare #table as table(btype int)
declare #btype int
insert into #table
SELECT bType FROM WORK_STATION WHERE nFileId = 123456789
while(exists(select top 1 'x' from #table)) --as long as #table contains records continue
begin
select top 1 #btype = btype from #table
if(#btype = 10)
print 'something'
delete top (1) from #table --remove the previously processed row. also ensures no infinite loop
end
I think you can use SP to declare variables and then compare it with the resultset, if you know that you have only 10 values you can use temp table and insert 10 values.
I hope this is helpful.