DROP TABLE #ABC
CREATE TABLE #ABC (ID INT, Name VARCHAR (2))
INSERT INTO #ABC (ID, NAME)
VALUES (1,'01'),(1,'F5'),(1,'05'),(2,'08'),(2,'G4'),(3,'Y7'),(3,'18')
drop table #XYZ
CREATE TABLE #XYZ (ID INT, Name char(20))
INSERT INTO #XYZ (ID,Name)
SELECT ID, SUBSTRING(REPLACE(CONVERT(VARCHAR(36), NEWID()) , '-', ''), 0, 3) from #ABC
Select * from #XYZ
I want the process to create a new name which is already not taken by the same ID. in other words, same ID (say ID =1) can not have the same "Name" columns. This is just very few records but my real data is huge, I want system to generate only new Names with 2 characters in table#XYZ which are already not taken by the same ID in #ABC. Any help is appreciated. Thanks
I added another temp table #DEF to hold the Names you're generating from NEWID(). It's a little clearer to use SUBSTRING('123456', 1, 2) to obtain the first two characters. I also added a GROUP BY ID so that it will generate only one Name per ID.
Finally, I used a LEFT JOIN and a NULL match to look for #DEF entries that were not already present in #ABC.
DROP TABLE #ABC
CREATE TABLE #ABC (ID INT, Name VARCHAR (2))
INSERT INTO #ABC (ID, NAME)
VALUES (1,'01'),(1,'F5'),(1,'05'),(2,'08'),(2,'G4'),(3,'Y7'),(3,'18')
DROP TABLE #DEF
CREATE TABLE #DEF (ID INT, Name char(20))
INSERT INTO #DEF (ID, Name)
SELECT ID, SUBSTRING(REPLACE(CONVERT(VARCHAR(36), NEWID()) , '-', ''), 1, 2) AS Name
FROM #ABC
GROUP BY ID
DROP TABLE #XYZ
CREATE TABLE #XYZ (ID INT, Name char(20))
INSERT INTO #XYZ (ID, Name)
SELECT #DEF.ID, #DEF.Name
FROM #DEF
LEFT JOIN #ABC ON #ABC.ID = #DEF.ID AND #ABC.Name = #DEF.Name
WHERE #ABC.ID IS NULL
GROUP BY #DEF.ID, #DEF.Name
SELECT * FROM #XYZ
Does this work for you?
Related
I'm migrating data from one table to another table in SQL Server, In this process what I need to do is "I have 10 columns in old table one column is 'CityName' which is varchar and in the new table, I have a column 'CityId' which is an integer. And I have other table which has data about city id and names. I need store the appropriate cityId in new table instead of CityName. Please help me. Thanks in advance.
You'll need to join the source table to the CityName field in the city information table:
INSERT INTO dbo.Destination (CityID, OtherStuff)
SELECT t1.CityID, t2.OtherStuff
FROM CityInformationTable t1
INNER JOIN SourceTable t2
ON t1.CityName = t2.CityName
Below should give you an idea, you need to inner join to your look up table to achieve this.
declare #t_cities table (Id int, City nvarchar(20))
insert into #t_cities
(Id, City)
values
(1, 'London'),
(2, 'Dublin'),
(3, 'Paris'),
(4, 'Berlin')
declare #t table (City nvarchar(20), SomeColumn nvarchar(10))
insert into #t
values
('London', 'AaaLon'),
('Paris', 'BeePar'),
('Berlin', 'CeeBer'),
('London', 'DeeLon'),
('Dublin', 'EeeDub')
declare #finalTable table (Id int, SomeColumn nvarchar(10))
insert into #finalTable
select c.Id, t.SomeColumn
from #t t
join #t_cities c on c.City = t.City
select * from #finalTable
Output:
Id SomeColumn
1 AaaLon
3 BeePar
4 CeeBer
1 DeeLon
2 EeeDub
I'm new in query and SQL server, and I wanted to know about DDL.
I have an attribute in my Table which has more than 1 value, such as
Size = {'S', 'M', 'L'}.
How could i make the attribute in my Table with query, so i can insert multi values to one of my attribute?
You don't want to do this, because this is denormalizing your data. But, if you must.
declare #table table (id int identity(1,1), size varchar(16))
insert into #table
values
('S')
,('M')
select * from #table
update #table
set size = size + ',M'
where id = 1
select * from #table
Here is a one to many approach with a foreign key
create table #items (id int identity(1,1), descrip varchar(64))
insert into #items
values
('shirt'),
('pants')
create table #item_sizes (id int identity(1,1), size char(1), item_id int)
alter table #item_sizes
add constraint FK_item foreign key (item_id) references #items(id)
insert into #item_sizes
values
('S',1)
,('M',1)
,('L',1)
,('S',2)
select
ItemID = i.id
,i.descrip
,isiz.size
from #items i
inner join #item_sizes isiz
on isiz.item_id = i.id
drop table #items, #item_sizes
As per your requirement :
Product (...,ProductSize);
INSERT INTO Product (ProductSize) VALUES ('S')
How to query the row of ProductSize so i can insert more than one values in SQL? –
you can query like below
select * from Product where ProductSize like '%S%' or ProductSize like '%L%' or ProductSize like '%M%'
I am trying to get column names from 2 diff tables in diff db and compare them to see if there is any extra column in any table. They should match exactly. One possible solution could be getting all the column names from both table and dump in a temp table side by side and compare? Pls help.
IF OBJECT_ID('tempdb..#myTable') IS NOT NULL DROP TABLE #myTable
CREATE table #myTable (
table1 varchar(100) null,
table2 varchar(100) null
)
INSERT INTO #myTable (table1)
SELECT name
FROM sys.columns
WHERE object_id = OBJECT_ID('table1')
select * from #mytable
DROP TABLE #mytable
I modified your query to this
IF OBJECT_ID('tempdb..#myTable') IS NOT NULL DROP TABLE #myTable
CREATE table #myTable
(
rowNum int IDENTITY(1,1),
table1 varchar(100) null
)
GO
IF OBJECT_ID('tempdb..#myTable2') IS NOT NULL DROP TABLE #myTable2
CREATE table #myTable2
(
rowNum int IDENTITY(1,1),
table2 varchar(100) null
)
GO
USE database1 --your 1st database name here
GO
INSERT INTO #myTable (table1)
(
SELECT
name
FROM sys.columns
WHERE object_id = OBJECT_ID('Table_1'))
GO
USE database2 -- your 2nd database name here
GO
INSERT INTO #myTable2 (table2)
(
SELECT
name
FROM sys.columns
WHERE object_id = OBJECT_ID('Table_2'))
GO
SELECT table1,table2
FROM #myTable m
FULL OUTER JOIN #myTable2 m2 ON m.rowNum = m2.rowNum
ORDER BY table1,table2
DROP TABLE #mytable
DROP TABLE #mytable2
I am trying to insert data to a table from another where data is not already exists
The table I am inserting the data into
CREATE TABLE #T(Name VARCHAR(10),Unit INT, Id INT)
INSERT INTO #T
VALUES('AAA',10,100),('AAB',11,102),('AAC',12,130)
The table I am selecting the data from
CREATE TABLE #T1(Name VARCHAR(10),TypeId INT,Unit INT, Id INT)
INSERT INTO #T1
VALUES('AAA',3,10,100),('AAA',3,10,106)
In this case I want to select ('AAA',3,10,106) from #T1 because AAA,106 combination not exists in #T
Basically what I want is to populate unique Name and Id combination
I tried below which doesn't seems to work
SELECT *
FROM #T1
WHERE NOT EXISTS(SELECT * FROM #T)
You have to somehow correlate the two tables:
SELECT *
FROM #T1
WHERE NOT EXISTS(SELECT *
FROM #T
WHERE #T1.Name = #T.Name AND #T1.ID = #T.ID)
The above query essentially says: get me those records of table #T1 which do not have a related record in #T having the same Name and ID values.
Your best bet is probably to use a insert statement with a subquery. Something like this:
SQL Insert Into w/Subquery - Checking If Not Exists
Edit: If you're still stuck, try this--
INSERT INTO #T (Name, Unit, Id)
SELECT Name, Unit, Id
FROM #T1
WHERE
NOT EXISTS (SELECT Name, Unit, Id FROM #T
WHERE #T.Name = #T1.Name AND #T.Unit = #T1.Unit AND #T.Id = #T1.Id)
I want to know if it is possible to insert to a table from a specific column of result from a stored procedure?
Something like:
declare #temp as table(
id int
)
insert #temp
exec getlistofStudents --returns multiple columns
this is an example only, Thanks for the help..
You can take a 2 step approach. First INSERT INTO a #TempTable, then populate the #TempVariable with another INSERT INTO, selecting the single column.
DECLARE #temp AS TABLE
(
ID int
);
CREATE TABLE #tempTable1
(
Column1 int,
Column2 int
);
INSERT INTO #tempTable1
Exec getlistofStudents
INSERT INTO #temp
SELECT Column1 FROM #tempTable1