Let's say I have below table script
DECLARE #result TABLE
(
[ID] Int
,[Data] Varchar(500)
)
DECLARE #codes TABLE
(
[ID] Varchar(500)
,[FullNames] Varchar(500)
)
INSERT INTO #result
SELECT 1
,'[A]-[B]'
INSERT INTO #result
SELECT 2
,'[D]-[A]'
INSERT INTO #result
SELECT 3
,'[A]+[C]'
INSERT INTO #codes
SELECT 'A'
,'10'
INSERT INTO #codes
SELECT 'B'
,'20'
INSERT INTO #codes
SELECT 'C'
,'30'
INSERT INTO #codes
SELECT 'D'
,'40'
SELECT * FROM #result
SELECT * FROM #codes
Output of those are as below:
#result
ID Data
-- -------
1 [A]-[B]
2 [D]-[A]
3 [A]+[C]
#codes
ID FullNames
-- -------
A 10
B 20
C 30
D 40
Now I want output as below also:
ID Data
-- -----
1 10-20
2 40-10
3 10+30
Please help me.
Please note: Data columns also contains ([A]-[B]+[D])*[C]
I found similar solution on https://stackoverflow.com/a/26650255/8454103 which is for your reference.
Try like this;
select Output from (
select Data, c1.FullNames as LeftSideName, c2.FullNames as RightSideName, LeftSide, RightSide, REPLACE(REPLACE(Data,'[' + LeftSide + ']',c1.FullNames),'[' + RightSide + ']',c2.FullNames) as Output from (
select r.ID, Data,SUBSTRING(Data, 2, 1) LeftSide ,SUBSTRING(Data, 6, 1) RightSide from #result r ) Result
inner join #codes c1 ON Result.LeftSide = c1.ID
inner join #codes c2 ON Result.RightSide = c2.ID)
Records
Output:
10-20
10+30
40-10
The query can perform replacing dynamically A,B,C,D,E according to #codes table etc.
Try this:
select ID, REPLACE(REPLACE(REPLACE(REPLACE(Data,
'[A]', (select FullNames from #codes where ID = 'A')),
'[B]', (select FullNames from #codes where ID = 'B')),
'[C]', (select FullNames from #codes where ID = 'C')),
'[D]', (select FullNames from #codes where ID = 'D'))
from #result
Related
I am trying to implement search functionality with list of values in SQL variable, including range. Appreciate any guidance/links pointing to correct approach for this.
Below is the dataset:
CREATE TABLE [dbo].[Books]
(
[ID] [NCHAR](10) NOT NULL,
[AUTHCODE] [NCHAR](10) NULL,
[TITLE] [NCHAR](10) NULL
) ON [PRIMARY]
GO
INSERT [dbo].[Books] ([ID], [AUTHCODE], [TITLE])
VALUES (N'1', N'nk', N'Book1'),
(N'2', N'an', N'Book2'),
(N'3', N'mn', N'Book3'),
(N'4', N'ra', N'Book4'),
(N'5', N'kd', N'Book5'),
(N'6', N'nk', N'Book6'),
(N'7', N'an', N'Book7'),
(N'8', N'ra', N'Book8'),
(N'9', N'kd', N'Book9'),
(N'10', N'mn', N'Book10 ')
GO
Below I am trying to filter using the SQL IN clause but this does not return desired result.
select * from books
declare #List1 varchar(max) = '2,4,6,7,8,9' --simple list
select *
from books
where id in (#List1)
declare #List2 varchar(max) = '2,4-7,9' --list with range
select *
from books
where id in (#List2)
You cannot directly use strings as lists, but you can do use STRING_SPLIT (Transact-SQL) if you really need to pass filtering parameters as strings:
declare #list varchar(max) = '2,4,6-8,9'
declare #filter table (id1 int, id2 int)
insert into #filter (id1,id2)
select
case when b.pos > 0 then left(a.[value], pos - 1) else a.[value] end as id1,
case when b.pos > 0 then right(a.[value], len(a.[value]) - pos) else a.[value] end as id2
from string_split(#list, ',') as a
cross apply (select charindex('-', a.[value]) as pos) as b
select *
from [dbo].[Books] as b
where
exists (select * from #filter as tt where b.id between tt.id1 and tt.id2)
Also it might be an idea to pass your filter as json and OPENJSON (Transact-SQL) so you can make parsing part simplier:
declare #list varchar(max) = '[2,4,[6,8],9]'
select
case when a.[type] = 4 then json_value(a.[value], '$[0]') else a.[value] end,
case when a.[type] = 4 then json_value(a.[value], '$[1]') else a.[value] end
from openjson(#list) as a
All above, of course, only applicable if you have Sql Server 2016 or higher
IN() operator determines whether a specified value matches any value in a subquery or a list. not a string and that what you are doing.
What you are trying to do can be done as
DECLARE #List1 AS TABLE (ID INT);
INSERT INTO #List1
SELECT 2 UNION SELECT 4 UNION SELECT 6 UNION
SELECT 7 UNION SELECT 8 UNION SELECT 9;
SELECT *
FROM Books
WHERE ID IN (SELECT ID FROM #List1);
DECLARE #List2 As TABLE (AFrom INT, ATo INT);
INSERT INTO #List2
SELECT 2, 4 UNION SELECT 7, 9;
SELECT *
FROM Books B CROSS APPLY #List2 L
WHERE B.ID BETWEEN L.AFrom AND L.ATo;
Live Demo
Suppose I have a table like:
id | parentId | name
1 NULL A
2 1 B
3 2 C
4 1 E
5 3 E
I am trying to write a scalar function I can call as:
SELECT dbo.GetId('A/B/C/E') which would produce "5" if we use the above reference table. The function would do the following steps:
Find the ID of 'A' which is 1
Find the ID of 'B' whose parent is 'A' (id:1) which would be id:2
Find the ID of 'C' whose parent is 'B' (id:2) which would be id:3
Find the ID of 'E' whose parent is 'C' (id:3) which would be id:5
I was trying to do it with a WHILE loop but it was getting very complicated very fast... Just thinking there must be a simple way to do this.
CTE version is not optimized way to get the hierarchical data. (Refer MSDN Blog)
You should do something like as mentioned below. It's tested for 10 millions of records and is 300 times faster than CTE version :)
Declare #table table(Id int, ParentId int, Name varchar(10))
insert into #table values(1,NULL,'A')
insert into #table values(2,1,'B')
insert into #table values(3,2,'C')
insert into #table values(4,1,'E')
insert into #table values(5,3,'E')
DECLARE #Counter tinyint = 0;
IF OBJECT_ID('TEMPDB..#ITEM') IS NOT NULL
DROP TABLE #ITEM
CREATE TABLE #ITEM
(
ID int not null
,ParentID int
,Name VARCHAR(MAX)
,lvl int not null
,RootID int not null
)
INSERT INTO #ITEM
(ID,lvl,ParentID,Name,RootID)
SELECT Id
,0 AS LVL
,ParentId
,Name
,Id AS RootID
FROM
#table
WHERE
ISNULL(ParentId,-1) = -1
WHILE ##ROWCOUNT > 0
BEGIN
SET #Counter += 1
insert into #ITEM(ID,ParentId,Name,lvl,RootID)
SELECT ci.ID
,ci.ParentId
,ci.Name
,#Counter as cntr
,ch.RootID
FROM
#table AS ci
INNER JOIN
#ITEM AS pr
ON
CI.ParentId=PR.ID
LEFT OUTER JOIN
#ITEM AS ch
ON ch.ID=pr.ID
WHERE
ISNULL(ci.ParentId, -1) > 0
AND PR.lvl = #Counter - 1
END
select * from #ITEM
Here is an example of functional rcte based on your sample data and requirements as I understand them.
if OBJECT_ID('tempdb..#Something') is not null
drop table #Something
create table #Something
(
id int
, parentId int
, name char(1)
)
insert #Something
select 1, NULL, 'A' union all
select 2, 1, 'B' union all
select 3, 2, 'C' union all
select 4, 1, 'E' union all
select 5, 3, 'E'
declare #Root char(1) = 'A';
with MyData as
(
select *
from #Something
where name = #Root
union all
select s.*
from #Something s
join MyData d on d.id = s.parentId
)
select *
from MyData
Note that if you change the value of your variable the output will adjust. I would make this an inline table valued function.
I think I have it based on #SeanLange's recommendation to use a recursive CTE (above in the comments):
CREATE FUNCTION GetID
(
#path VARCHAR(MAX)
)
/* TEST:
SELECT dbo.GetID('A/B/C/E')
*/
RETURNS INT
AS
BEGIN
DECLARE #ID INT;
WITH cte AS (
SELECT p.id ,
p.parentId ,
CAST(p.name AS VARCHAR(MAX)) AS name
FROM tblT p
WHERE parentId IS NULL
UNION ALL
SELECT p.id ,
p.parentId ,
CAST(pcte.name + '/' + p.name AS VARCHAR(MAX)) AS name
FROM dbo.tblT p
INNER JOIN cte pcte ON
pcte.id = p.parentId
)
SELECT #ID = id
FROM cte
WHERE name = #path
RETURN #ID
END
I have problem when I use my query bellow to have a looping inside the cursor.
data in table1 will be like this:
id | data
----|---------
A | 4
B | 2
C | 5
the result in table2 should be like this:
id | data
----|---------
A | 1
A | 1
A | 1
A | 1
B | 1
B | 1
C | 1
C | 1
C | 1
C | 1
C | 1
I have SQL query with cursor like this:
DECLARE #table2 table ( id VARCHAR(500), data INTEGER)
DECLARE Cur CURSOR FOR
SELECT id, data FROM table1
OPEN Cur
WHILE ( ##FETCH_STATUS = 0 )
BEGIN
DECLARE #LoopNum INTEGER
DECLARE #tempID VARCHAR(255)
DECLARE #tempDATA INTEGER
FETCH NEXT FROM Cur INTO #tempID, #tempDATA
set #LoopNum = 0
WHILE #LoopNum < #tempDATA
BEGIN
INSERT INTO table2 (id, data)
VALUES( #tempID, 1)
SET #LoopNum = #LoopNum + 1
END
END
CLOSE Cur
DEALLOCATE Cur
SELECT * FROM table2
but the query didn't work. is there something wrong with my query?
Thank you.
Use this query to the expected result.
CREATE TABLE #test
(id CHAR(1),data INT)
INSERT #test VALUES ('A',4)
INSERT #test VALUES('B',2)
INSERT #test VALUES('C',5);
SELECT s.id, 1 AS data
FROM #test s
INNER JOIN
master.dbo.spt_values t ON t.type='P'
AND t.number BETWEEN 1 AND s.data
Note: Refer this Why (and how) to split column using master..spt_values?
You actually don't need a loop
IF OBJECT_ID('TEMPDB..#TEMP') IS NOT NULL
DROP TABLE #TEMP
SELECT 'A' AS ID, 4 AS DATA
INTO #TEMP UNION
SELECT 'B', 2 UNION
SELECT 'C', 5
;WITH CTE AS
(
SELECT 1 AS NUMBER
UNION ALL
SELECT NUMBER + 1
FROM CTE
WHERE NUMBER < 100
)
SELECT T.ID, 1
FROM CTE C
INNER JOIN #TEMP T
ON C.NUMBER <= T.DATA
ORDER BY T.ID
Carefull that if you want ot generate a large set of numbers in the CTE it may become slower.
Use a Recursive CTE which will help you to loop through the records.
CREATE TABLE #test
(id CHAR(1),data INT)
INSERT #test
VALUES ('A',4),('B',2),('C',5);
WITH cte
AS (SELECT 1 AS da,id,data
FROM #test a
UNION ALL
SELECT da + 1,id,data
FROM cte a
WHERE da < (SELECT data
FROM #test b
WHERE a.id = b.id))
SELECT id,
1 AS data
FROM cte
ORDER BY id
i used two loops
1. for each row
2. for number for duplicate insert
SET NOCOUNT on;
DECLARE #t table(row int IDENTITY(1,1),id varchar(10),data int)
INSERT INTO #t
SELECT * from xyz
DECLARE #x table(id varchar(10),data int) --table to hold the new data
DECLARE #i int=(SELECT count (*) from xyz) --number of rows main table
DECLARE #y int --number of duplicate
DECLARE #p int=1 --number of rows
WHILE #i!=0 --loop until last row of main table
BEGIN
SET #y=(SELECT data FROM #t WHERE row=#p) --set #y for number of 'row duplicate'
WHILE #y!=0
BEGIN
INSERT INTO #x
SELECT id,1
FROM #t
WHERE row=#p
SET #y=#y-1
END
SET #p=#p+1
SET #i=#i-1
END
SELECT * FROM #x
I have column looks like below
SID101
SID102
SID103
SID105
SID107
In the above criteria i need to find missed SID numbers. SID104 and SID 106 are missed while ordering.
How can i find the missed id numbers.Could any one help me finding it.
Thanks in advance.
If your table contains gaps with length more than 1 item, you can use this query:
declare #t table(s varchar(20))
insert #t values ('SID101'),('SID102'),('SID103'),('SID105'),('SID108');
with cte as
(
select substring(t.s, 4, len(t.s)) [i]
from #t t
)
select 'SID' + cast(m.number as varchar(20))
from master..spt_values m
left join cte c on c.i = m.number
where [Type] = 'P'
and m.number >= (select min(i) from cte)
and m.number <= (select max(i) from cte)
and c.i is null
Output:
-----------------------
SID104
SID106
SID107
Something like this should work:
DECLARE #i INT;
SET #i = 100;
CREATE TABLE #idsToCheck (checkId varchar(100));
WHILE (#i < 200)
BEGIN
INSERT INTO #idsToCheck VALUES ('SID' + CONVERT(varchar(100), #i));
SET #i = #i + 1;
END
SELECT * FROM #idsToCheck itc
LEFT OUTER JOIN MainTable mt ON itc.checkId = mt.realId
WHERE mt.realId = NULL
DROP TABLE #idsToCheck
... where MainTable is your table containing the SID101, SID102, etc. column values, and MainTable.realId is the column containing those IDs. Modify the #i initial value and number in the while loop condition based on which SIDs you want to check from/to.
It's difficult. With
SELECT COUNT(*),MAX(CAST(REPLACE(y.name,'SID','') AS INT)) AS col_max FROM
sys.objects x INNER JOIN sys.columns y ON x.object_id=y.object_id
WHERE x.name='<TABLE_NAME>'
you should know, how much columns are missing (i.e. COUNT(*) is 5 and col_max is 107)
When you have a table, which contains only one column with all possible IDs from 1 to max (i.e. 100,101,102,103,104,...,132) then you could do
SELECT * FROM (
SELECT CAST(REPLACE(y.name,'SID','') AS INT) AS col_id FROM
sys.objects x INNER JOIN sys.columns y ON x.object_id=y.object_id
WHERE x.name='<TABLE_NAME>'
) a
RIGHT JOIN <TABLE_IDS> b ON a.col_id=b.id
WHERE a.col_id IS NULL AND b.id<=(
SELECT MAX(CAST(REPLACE(y.name,'SID','') AS INT)) AS col_max FROM
sys.objects x INNER JOIN sys.columns y ON x.object_id=y.object_id
WHERE x.name='<TABLE_NAME>'
)
EDIT: sorry, I've seen just now, that these values aren't column names, but values. My solution will find missing column names
Declare #St int
declare #end int
set #st = CAST( (select RIGHT( max(data),4) from orderno)as int)
set #end = CAST( (select RIGHT( min(data),4) from orderno)as int)
create table #temp(data int)
while(#St <= #end )
begin
insert into #temp values(#St)
set #St = #St +1
end
select * from orderno
select * from #temp
select data from #temp where data not in (select cast(RIGHT(data,4))
declare #t table(s varchar(20))
insert #t values ('SID101'),('SID102'),('SID103'),('SID105'),('SID107');
with cte as
(
select substring(t.s, 4, len(t.s)) [i]
from #t t
)
select 'SID' + cast(t1.i + 1 as varchar(20))
from cte t1
join cte t2 on t2.i > t1.i
and not exists(
select 1
from cte c3
where c3.i > t1.i and c3.i < t2.i
)
where t2.i <> t1.i + 1
Output:
-----------------------
SID104
SID106
I have a column named sequence. The data in this column looks like 1, 2, 3, 4, 5, 7, 9, 10, 15.
I need to find the missing sequence numbers from the table. What SQL query will find the missing sequence numbers from my table? I am expecting results like
Missing numbers
---------------
6
8
11
12
13
14
I am using only one table. I tried the query below, but am not getting the results I want.
select de.sequence + 1 as sequence from dataentry as de
left outer join dataentry as de1 on de.sequence + 1 = de1.sequence
where de1.sequence is null order by sequence asc;
How about something like:
select (select isnull(max(val)+1,1) from mydata where val < md.val) as [from],
md.val - 1 as [to]
from mydata md
where md.val != 1 and not exists (
select 1 from mydata md2 where md2.val = md.val - 1)
giving summarised results:
from to
----------- -----------
6 6
8 8
11 14
I know this is a very old post but I wanted to add this solution that I found HERE so that I can find it easier:
WITH Missing (missnum, maxid)
AS
(
SELECT 1 AS missnum, (select max(id) from #TT)
UNION ALL
SELECT missnum + 1, maxid FROM Missing
WHERE missnum < maxid
)
SELECT missnum
FROM Missing
LEFT OUTER JOIN #TT tt on tt.id = Missing.missnum
WHERE tt.id is NULL
OPTION (MAXRECURSION 0);
Try with this:
declare #min int
declare #max int
select #min = min(seq_field), #max = max(seq_field) from [Table]
create table #tmp (Field_No int)
while #min <= #max
begin
if not exists (select * from [Table] where seq_field = #min)
insert into #tmp (Field_No) values (#min)
set #min = #min + 1
end
select * from #tmp
drop table #tmp
The best solutions are those that use a temporary table with the sequence. Assuming you build such a table, LEFT JOIN with NULL check should do the job:
SELECT #sequence.value
FROM #sequence
LEFT JOIN MyTable ON #sequence.value = MyTable.value
WHERE MyTable.value IS NULL
But if you have to repeat this operation often (and more then for 1 sequence in the database), I would create a "static-data" table and have a script to populate it to the MAX(value) of all the tables you need.
SELECT CASE WHEN MAX(column_name) = COUNT(*)
THEN CAST(NULL AS INTEGER)
-- THEN MAX(column_name) + 1 as other option
WHEN MIN(column_name) > 1
THEN 1
WHEN MAX(column_name) <> COUNT(*)
THEN (SELECT MIN(column_name)+1
FROM table_name
WHERE (column_name+ 1)
NOT IN (SELECT column_name FROM table_name))
ELSE NULL END
FROM table_name;
Here is a script to create a stored procedure that returns missing sequential numbers for a given date range.
CREATE PROCEDURE dbo.ddc_RolledBackOrders
-- Add the parameters for the stored procedure here
#StartDate DATETIME ,
#EndDate DATETIME
AS
BEGIN
SET NOCOUNT ON;
DECLARE #Min BIGINT
DECLARE #Max BIGINT
DECLARE #i BIGINT
IF OBJECT_ID('tempdb..#TempTable') IS NOT NULL
BEGIN
DROP TABLE #TempTable
END
CREATE TABLE #TempTable
(
TempOrderNumber BIGINT
)
SELECT #Min = ( SELECT MIN(ordernumber)
FROM dbo.Orders WITH ( NOLOCK )
WHERE OrderDate BETWEEN #StartDate AND #EndDate)
SELECT #Max = ( SELECT MAX(ordernumber)
FROM dbo.Orders WITH ( NOLOCK )
WHERE OrderDate BETWEEN #StartDate AND #EndDate)
SELECT #i = #Min
WHILE #i <= #Max
BEGIN
INSERT INTO #TempTable
SELECT #i
SELECT #i = #i + 1
END
SELECT TempOrderNumber
FROM #TempTable
LEFT JOIN dbo.orders o WITH ( NOLOCK ) ON tempordernumber = o.OrderNumber
WHERE o.OrderNumber IS NULL
END
GO
Aren't all given solutions way too complex?
wouldn't this be much simpler:
SELECT *
FROM (SELECT row_number() over(order by number) as N from master..spt_values) t
where N not in (select 1 as sequence union
select 2 union
select 3 union
select 4 union
select 5 union
select 7 union
select 10 union
select 15
)
This is my interpretation of this issue, placing the contents in a Table variable that I can easily access in the remainder of my script.
DECLARE #IDS TABLE (row int, ID int)
INSERT INTO #IDS
select ROW_NUMBER() OVER (ORDER BY x.[Referred_ID]), x.[Referred_ID] FROM
(SELECT b.[Referred_ID] + 1 [Referred_ID]
FROM [catalog].[dbo].[Referrals] b) as x
LEFT JOIN [catalog].[dbo].[Referrals] a ON x.[Referred_ID] = a.[Referred_ID]
WHERE a.[Referred_ID] IS NULL
select * from #IDS
Just for fun, I decided to post my solution.
I had an identity column in my table and I wanted to find missing invoice numbers.
I reviewed all the examples I could find but they were not elegant enough.
CREATE VIEW EENSkippedInvoicveNo
AS
SELECT CASE WHEN MSCNT = 1 THEN CAST(MSFIRST AS VARCHAR (8)) ELSE
CAST(MSFIRST AS VARCHAR (8)) + ' - ' + CAST(MSlAST AS VARCHAR (8)) END AS MISSING,
MSCNT, INV_DT FROM (
select invNo+1 as Msfirst, inv_no -1 as Mslast, inv_no - invno -1 as msCnt, dbo.fmtdt(Inv_dt) AS INV_dT
from (select inv_no as invNo, a4glidentity + 1 as a4glid
from oehdrhst_sql where inv_dt > 20140401) as s
inner Join oehdrhst_sql as h
on a4glid = a4glidentity
where inv_no - invno <> 1
) AS SS
DECLARE #MaxID INT = (SELECT MAX(timerecordid) FROM dbo.TimeRecord)
SELECT SeqID AS MissingSeqID
FROM (SELECT ROW_NUMBER() OVER (ORDER BY column_id) SeqID from sys.columns) LkUp
LEFT JOIN dbo.TimeRecord t ON t.timeRecordId = LkUp.SeqID
WHERE t.timeRecordId is null and SeqID < #MaxID
I found this answer here:
http://sql-developers.blogspot.com/2012/10/how-to-find-missing-identitysequence.html
I was looking for a solution and found many answers. This is the one I used and it worked very well. I hope this helps anyone looking for a similar answer.
-- This will return better Results
-- ----------------------------------
;With CTERange
As (
select (select isnull(max(ArchiveID)+1,1) from tblArchives where ArchiveID < md.ArchiveID) as [from],
md.ArchiveID - 1 as [to]
from tblArchives md
where md.ArchiveID != 1 and not exists (
select 1 from tblArchives md2 where md2.ArchiveID = md.ArchiveID - 1)
) SELECT [from], [to], ([to]-[from])+1 [total missing]
From CTERange
ORDER BY ([to]-[from])+1 DESC;
from to total missing
------- ------- --------------
6 6 1
8 8 1
11 14 4
DECLARE #TempSujith TABLE
(MissingId int)
Declare #Id Int
DECLARE #mycur CURSOR
SET #mycur = CURSOR FOR Select Id From tbl_Table
OPEN #mycur
FETCH NEXT FROM #mycur INTO #Id
Declare #index int
Set #index = 1
WHILE ##FETCH_STATUS = 0
BEGIN
if (#index < #Id)
begin
while #index < #Id
begin
insert into #TempSujith values (#index)
set #index = #index + 1
end
end
set #index = #index + 1
FETCH NEXT FROM #mycur INTO #Id
END
Select Id from tbl_Table
select MissingId from #TempSujith
Create a useful Tally table:
-- can go up to 4 million or 2^22
select top 100000 identity(int, 1, 1) Id
into Tally
from master..spt_values
cross join master..spt_values
Index it, or make that single column as PK.
Then use EXCEPT to get your missing number.
select Id from Tally where Id <= (select max(Id) from TestTable)
except
select Id from TestTable
You could also solve using something like a CTE to generate the full sequence:
create table #tmp(sequence int)
insert into #tmp(sequence) values (1)
insert into #tmp(sequence) values (2)
insert into #tmp(sequence) values (3)
insert into #tmp(sequence) values (5)
insert into #tmp(sequence) values (6)
insert into #tmp(sequence) values (8)
insert into #tmp(sequence) values (10)
insert into #tmp(sequence) values (11)
insert into #tmp(sequence) values (14)
DECLARE #max INT
SELECT #max = max(sequence) from #tmp;
with full_sequence
(
Sequence
)
as
(
SELECT 1 Sequence
UNION ALL
SELECT Sequence + 1
FROM full_sequence
WHERE Sequence < #max
)
SELECT
full_sequence.sequence
FROM
full_sequence
LEFT JOIN
#tmp
ON
full_sequence.sequence = #tmp.sequence
WHERE
#tmp.sequence IS NULL
Hmmmm - the formatting is not working on here for some reason? Can anyone see the problem?
i had made a proc so you can send the table name and the key and the result is a list of missing numbers from the given table
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
create PROCEDURE [dbo].[action_FindMissing_Autoincremnt]
(
#tblname as nvarchar(50),
#tblKey as nvarchar(50)
)
AS
BEGIN
SET NOCOUNT ON;
declare #qry nvarchar(4000)
set #qry = 'declare #min int '
set #qry = #qry + 'declare #max int '
set #qry = #qry +'select #min = min(' + #tblKey + ')'
set #qry = #qry + ', #max = max('+ #tblKey +') '
set #qry = #qry + ' from '+ #tblname
set #qry = #qry + ' create table #tmp (Field_No int)
while #min <= #max
begin
if not exists (select * from '+ #tblname +' where '+ #tblKey +' = #min)
insert into #tmp (Field_No) values (#min)
set #min = #min + 1
end
select * from #tmp order by Field_No
drop table #tmp '
exec sp_executesql #qry
END
GO
SELECT TOP 1 (Id + 1)
FROM CustomerNumberGenerator
WHERE (Id + 1) NOT IN ( SELECT Id FROM CustomerNumberGenerator )
Working on a customer number generator for my company. Not the most efficient but definitely most readable
The table has one Id column.
The table allows for Ids to be inserted at manually by a user off sequence.
The solution solves the case where the user decided to pick a high number