I want to compare two multiple value strings with each other to see if one of the values exists in the other string.
I have a table with a nvarchar row with pipe separated values, e.g.
'value1|value2|value3'
I also have an nvarchar variable with a comma separated string, e.g.
'value2,value3'
until now the column in the table had one value, I used a table function to spit the string in the variable and used the IN clause to see if the value was in the generated table. e.g.
select * from table1
WHERE column in (select val from dbo.split(#variable,','))
this won't work if the column also contains more values.
select * from table1
WHERE (select val from dbo.split(column,'|')) in (select val from dbo.split(#variable,','))
here it tries to compare 2 generated tables with each other which fails. I have tried this using joins, but can't find a way to properly do this. I'm using MSSQL 2008R2
Maybe this can help you:
select * from table1 where exists
(select * from
(select val from dbo.split(table1.column,'|')) a,
(select val from dbo.split(#variable,',')) b
where a.val=b.val)
Related
We have a PostgreSQL database where I have two tables with column text[] datatype. When I use an inner join to get details I do not see it is matching with any row.
for e.g.
create table test{
names text[],
id
}
create table test_b{
names text[],
id
}
now when I run below query,
SELECT t.* from test t inner join test_b tt
where t.names=tt.names;
I don't see any results. I even tried normal query with
SELECT * FROM test where names='{/test/test}';
It also did not work.
Any suggestions?
I suspect that you want array overlap operator &&. Also, since you don't need to return anything from test_b, using exists with a correlated subquery is more relevant than a join:
select t.*
from test t
where exists (select 1 from test_b b where t.names && b.names)
hello I have here a comma delimited query:
select [Product_Name]
,(select h2.Location_name + ', ' from (select distinct * from [dbo].[Product_list]) h2 where h1.Product_Name = h2.Product_Name
order by h2.Product_Name for xml path ('')) as Location_name
,(select h2.[Store name] + ', ' from [dbo].[Product_list] h2 where h1.Product_Name = h2.Product_Name
order by h2.Product_Name for xml path ('')) as store_name, sum(Quantity) as Total_Quantity from [dbo].[Product_list] h1
group by [Product_Name]
but this query shows duplicated data in comma delimited form, my problem is how will I only show the distinct values of the column in comma delimited form? can anyone please help me?
Well, if you don't SELECT DISTINCT * FROM dbo.Product_list and instead SELECT DISTINCT location_name FROM dbo.Product_list, which is anyway the only column you need, it will return only distinct values.
T-SQL supports the use of the asterisk, or “star” character (*) to
substitute for an explicit column list. This will retrieve all columns
from the source table. While the asterisk is suitable for a quick
test, avoid using it in production work, as changes made to the table
will cause the query to retrieve all current columns in the table’s
current defined order. This could cause bugs or other failures in
reports or applications expecting a known number of columns returned
in a defined order. Furthermore, returning data that is not needed can
slow down your queries and cause performance issues if the source
table contains a large number of rows. By using an explicit column
list in your SELECT clause, you will always achieve the desired
results, providing the columns exist in the table. If a column is
dropped, you will receive an error that will help identify the problem
and fix your query.
Using SELECT DISTINCT will filter out duplicates in the result set.
SELECT DISTINCT specifies that the result set must contain only unique
rows. However, it is important to understand that the DISTINCT option
operates only on the set of columns returned by the SELECT clause. It
does not take into account any other unique columns in the source
table. DISTINCT also operates on all the columns in the SELECT list,
not just the first one.
From Querying Microsoft SQL Server 2012 MCT Manual.
I have an insert Query and inserting data using SELECT query and certain joins between tables.
While running that query, it is giving error "String or binary data would be truncated".
There are thousands of rows and multiple columns I am trying to insert in that table.
So it is not possible to visualize all data and see what data is throwing this error.
Is there any specific way to identify which column is throwing this error? or any specific record not getting inserted properly and resulted into this error?
I found one article on this:
RareSQL
But this is when we insert data using some values and that insert is one by one.
I am inserting multiple rows at the same time using SELECT statements.
E.g.,
INSERT INTO TABLE1 VALUES (COLUMN1, COLUMN2,..) SELECT COLUMN1, COLUMN2,.., FROM TABLE2 JOIN TABLE3
Also, in my case, I am having multiple inserts and update statements and even not sure which statement is throwing this error.
You can do a selection like this:
select TABLE2.ID, TABLE3.ID TABLE1.COLUMN1, TABLE1.COLUMN2, ...
FROM TABLE2
JOIN TABLE3
ON TABLE2.JOINCOLUMN1 = TABLE3.JOINCOLUMN2
LEFT JOIN TABLE1
ON TABLE1.COLUMN1 = TABLE2.COLUMN1 and TABLE1.COLUMN2 = TABLE2.COLUMN2, ...
WHERE TABLE1.ID = NULL
The first join reproduces the selection you have been using for the insert and the second join is a left join, which will yield null values for TABLE1 if a row having the exact column values you wanted to insert does not exist. You can apply this logic to your other queries, which were not given in the question.
You might just have to do it the hard way. To make it a little simpler, you can do this
Temporarily remove the insert command from the query, so you are getting a result set out of it. You might need to give some of the columns aliases if they don't come with one. Then wrap that select query as a subquery, and test likely columns (nvarchars, etc) like this
Select top 5 len(Col1), *
from (Select col1, col2, ... your query (without insert) here) A
Order by 1 desc
This will sort the rows with the largest values in the specified column first and just return the rows with the top 5 values - enough to see if you've got a big problem or just one or two rows with an issue. You can quickly change which column you're checking simply by changing the column name in the len(Col1) part of the first line.
If the subquery takes a long time to run, create a temp table with the same columns but with the string sizes large (like varchar(max) or something) so there are no errors, and then you can do the insert just once to that table, and run your tests on that table instead of running the subquery a lot
From this answer,
you can use temp table and compare with target table.
for example this
Insert into dbo.MyTable (columns)
Select columns
from MyDataSource ;
Become this
Select columns
into #T
from MyDataSource;
select *
from tempdb.sys.columns as TempCols
full outer join MyDb.sys.columns as RealCols
on TempCols.name = RealCols.name
and TempCols.object_id = Object_ID(N'tempdb..#T')
and RealCols.object_id = Object_ID(N'MyDb.dbo.MyTable)
where TempCols.name is null -- no match for real target name
or RealCols.name is null -- no match for temp target name
or RealCols.system_type_id != TempCols.system_type_id
or RealCols.max_length < TempCols.max_length ;
I cannot get this type of select query (pseudo-code) to work. The UDF returns a table with 8 columns in a single row for a given 'UID_VEHICLE'. It works perfectly when the 'UID_VEHICLE' is provided as a constant like 3308. But I need one row of these function-results for each vehicle for a given customer -- up to 100 rows to be returned.
SELECT
*
FROM
[dbo].[fnGetNextDOT_InspectionData](UID_VEHICLE)
WHERE
UID_VEHICLE IN (SELECT UID_VEHICLE
FROM tVEHICLES
WHERE UID_CUSTOMER = 88);
Your comments and solutions are welcome...thanks...John
When passing row values from a query into a TVF, you need to use CROSS APPLY or OUTER APPLY (starting with SQL Server 2005):
SELECT * -- or dot.*, or whatever is desired
FROM tVEHICLES veh
CROSS APPLY [dbo].[fnGetNextDOT_InspectionData](veh.UID_VEHICLE) dot
WHERE veh.UID_CUSTOMER = 88;
I have a table's structure:
[Subjects]:
id int Identity Specification yes
Deleted bit
[Juridical]:
id int
Name varchar
typeid int
[Individual]:
id int
Name varchar
Juridical and Individual it's a children classes of Subjects class. So it's mean that same rows in tables Individual and Subjects have a same id.
Now I have a table:
[MyTable]:
typeid varchar
Name varchar
And I want to select data from this table and insert it into my table structure. But I don't know what to do. I tried to use OUTPUT:
INSERT INTO [Individual](Name)
OUTPUT false
INTO [Subjects].[Deleted]
SELECT [MyTable].[Name] as Name
FROM [MyTable]
WHERE [MyTable].[type] = 'Indv'
But the syntax is not correct.
Just use:
INSERT INTO Individual(Name)
SELECT [MyTable].[Name] as Name
FROM [MyTable]
WHERE [MyTable].[type] = 'Indv'
and
INSERT INTO Subjects(Deleted)
SELECT [MyTable].[Name] as Name
FROM [MyTable]
WHERE [MyTable].[type] = 'Indv'
You can't insert in a single query in two tables, you need two separate queries for that. For that reason I split your initial query into two INSERT statements, to add records to both your Individual and Subjects table.
Just as #marc_s said, you must select the exact number of columns in your SELECT statement with the number of columns you want to insert data into your tables.
Other than these two constraints, which are both related to syntax, you are fully allowed to do any filtering in the SELECT part or make any complex logic as you would do in a normal SELECT query.
You need to use this syntax:
INSERT INTO [Individual] (Name)
SELECT [MyTable].[Name]
FROM [MyTable]
WHERE [MyTable].[type] = 'Indv'
You should define the list of column to insert into in the INSERT INTO line, and then you must have a SELECT that returns exactly that many columns as you need (and the column types need to match, too)