I have a table with a column that has concatenated values like this
Table CHILD:
ChildId Values
2 x123,j455
3 f456,z789
4 m333,y567
5 x123,h888
And I have a master table MASTER that has
Table MASTER:
MainValues
x123
f456
y567
I need to get a query that'll select the following data
ChildId MainValues
2 x123
3 f456
4 y567
5 x123
Basically match value from MASTER in child values and return only the master value. How can I do this ? I have tried IN and LIKE clause matching with second table but that doesnt help much since the values are csv. Is there a way to split and match in sqlite ?
EDIT: Table and column names are fictional and intended just to explain this question better
Use a regular expression:
SELECT ChildId,MainValues FROM CHILD INNER JOIN MASTER WHERE ','||[Values]||',' like '%,'||MainValues||',%'
Also, please refrain from using keywords like values for column names...
Unfortunately SQLite doesn't have a function to find the index of a character from a string. So you have to rely on something else. Idan's method is good too but can be slower. You may try this:
SELECT c.childID, m.mainvalues
FROM CHILD c
JOIN MASTER m
WHERE m.mainvalues = substr(c.ivalues, -length(c.ivalues), 4)
OR m.mainvalues = substr(c.ivalues, 6);
I have used 4 and 6 assuming your number of characters before and after the ,. If that's not fixed you can try:
SELECT c.childID, m.mainvalues
FROM CHILD c
JOIN MASTER m
WHERE m.mainvalues = substr(c.ivalues, -length(c.ivalues), length(m.mainvalues))
OR m.mainvalues = substr(c.ivalues, length(m.mainvalues) + 2);
Related
I have two tables that I want to join together into 1 row by accessruleId for an ssrs report. The issue is FieldName has dynamic values and the same fieldName could appear more than once It seems like Pivot table is what I want but examples I've looked at is pivoting off a unique value and doing an aggregate function. Below is the output for query 1 and 2 and I want to combine the results so it looks like screenshot 3. If a given fieldname shows up more than once (businessArea in this case) I want to make the values comma delimited. Any links to examples similar to my need would be greatly appreciated. I'm using sql server 2016
Query 1
select ar.AccessRuleId, ar.EffectiveDate, ar.TermDate, ar.CreatedByUser, ar.LastUpdatedUser
from [AccessRule].[AccessRule] ar
where ar.AccessRuleId = 1
Query 2
select rf.FieldName, ro.[Value]
from [AccessRule].[RuleOperation] ro
join [AccessRule].[RuleField] rf on ro.FieldId = rf.RuleFieldId
where ro.AccessRuleId = 1
I need some help on this one. I have a query that I need to make work but I need to limit it by the results of another query.
SELECT ItemID, ItemNums
FROM dbo.Tables
ItemNums is a varchar field that is used to store the strings of the various item numbers.
This produces the following.
ItemID ItemNums
1 1, 4, 5
2 1, 3, 4, 5
3 2
4 4
5 1
I have another table that has each item number as an INT that I need to use to pull all ItemIDs that have the associated ItemNums
Something like this.
SELECT *
FROM dbo.Tables
WHERE ItemNums IN (4,5)
Any help would be appreciated.
If possible, you should change your database schema. In general, it's not good to store comma delimited lists in a relational database.
However, if that's not an option, here's one way using a join with like:
select *
from dbo.Tables t
join dbo.SecondTable st on ', '+t.ItemNums+',' like '%, '+st.ItemNumId+',%'
This concatenates commas to the beginning and end of the itemnums to ensure you only match on the specific ids.
I personally would recommend normalizing your dbo.tables.
It would be better as:
ItemID ItemNums
1 1
1 4
1 5
2 1
etc.
Then you can use a join or a sub query to pull out the rows with ItemNums in some list.
Otherwise, it's going to be a mess and not very fast.
I have an SQL table with a lot of rows. A column in this row is called Label.
The label is a combination of different numbers; example of this is
11-1234-1-1
or
11-1234-12-20
The first two positions are always a combination of 2 (11), after the first delimiter it is always 4 (1234). The third part of the label can be either 1 or 2 values (I.e it can be 1 or 12 or some other random nmr). The fourth part is random and ranging from 1-99
In this table, I also have the exact same values but in the fourth part it leads with 10 or 100 (so the fourth part receives 4 values).
Example of this is: 11-1234-12-1020
11-1234-12-20 and 11-1234-12-1020 are the same.
I want to find all these values where part B contains Part A.
The labels are found in the same column.
I have joined the columns with each other:
SELECT A.LABEL, B.LABEL
FROM TABLE A
JOIN TABLE B ON A.LABEL = B.LABEL
WHERE ??
What should my WHERE-clause be?
I have tried with LIKE and SUBSTRING but I'm missing getting values.
I.e.
WHERE A.LABEL LIKE SUBSTRING(B.LABEL,1,12) + '10' + '%'
Seeing I'm a beginner at this I'm kind of stuck. Help please :)
This should work
SELECT A.LABEL, B.LABEL FROM TABLE A
JOIN TABLE B ON
CASE WHEN LEN(RIGHT(A.LABEL, CHARINDEX('-', reverse(A.LABEL))-1)) = 1
THEN
STUFF(A.LABEL, LEN(A.LABEL) - CHARINDEX('-', reverse(A.LABEL))+1, 1, '-100')
ELSE
STUFF(A.LABEL, LEN(A.LABEL) - CHARINDEX('-', reverse(A.LABEL))+1, 1, '-10')
END = B.LABEL
So basically we find the last position of a - character in the string by reversing the string:
CHARINDEX('-', reverse(A.LABEL)
Then we insert either a 10 or a 100 at that point to compare with the other labels.
You need to do it on the join - remember you are joining two independent sets (tables) and you want the intersection where your pattern matches.
SELECT A.LABEL, B.LABEL
FROM TABLE A
INNER JOIN TABLE B ON B.LABEL LIKE A.LABEL + '%'
Cheers, T
I have one table that stores a range of integers in a field, sort of like a print range, (e.g. "1-2,4-7,9-11"). This field could also contain a single number.
My goal is to join this table to a second one that has discrete values instead of ranges.
So if table one contains
1-2,5
9-15
7
And table two contains
1
2
3
4
5
6
7
8
9
10
The result of the join would be
1-2,5 1
1-2,5 2
1-2,5 5
7 7
9-15 9
9-15 10
Working in SQL Server 2008 R2.
Use a string split function of your choice to split on comma. Figure out the min/max values and join using between.
SQL Fiddle
MS SQL Server 2012 Schema Setup:
create table T1(Col1 varchar(10))
create table T2(Col2 int)
insert into T1 values
('1-2,5'),
('9-15'),
('7')
insert into T2 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10)
Query 1:
select T1.Col1,
T2.Col2
from T2
inner join (
select T1.Col1,
cast(left(S.Item, charindex('-', S.Item+'-')-1) as int) MinValue,
cast(stuff(S.Item, 1, charindex('-', S.Item), '') as int) MaxValue
from T1
cross apply dbo.Split(T1.Col1, ',') as S
) as T1
on T2.Col2 between T1.MinValue and T1.MaxValue
Results:
| COL1 | COL2 |
----------------
| 1-2,5 | 1 |
| 1-2,5 | 2 |
| 1-2,5 | 5 |
| 9-15 | 9 |
| 9-15 | 10 |
| 7 | 7 |
Like everybody has said, this is a pain to do natively in SQL Server. If you must then I think this is the proper approach.
First determine your rules for parsing the string, then break down the process into well-defined and understood problems.
Based on your example, I think this is the process:
Separate comma separated values in the string into rows
If the data does not contain a dash, then it's finished (it's a standalone value)
If it does contain a dash, parse the left and right sides of the dash
Given the left and right sides (the range) determine all the values between them into rows
I would create a temp table to populate the parsing results into which needs two columns:
SourceRowID INT, ContainedValue INT
and another to use for intermediate processing:
SourceRowID INT, ContainedValues VARCHAR
Parse your comma-separated values into their own rows using a CTE like this Step 1 is now a well-defined and understood problem to solve:
Turning a Comma Separated string into individual rows
So your result from the source
'1-2,5'
will be:
'1-2'
'5'
From there, SELECT from that processing table where the field does not contain a dash. Step 2 is now a well-defined and understood problem to solve These are standalone numbers and can go straight into the results temp table. The results table should also get the ID reference to the original row.
Next would be to parse the values to the left and right of the dash using CHARINDEX to locate it, then the appropriate LEFT and RIGHT functions as needed. This will give you the starting and ending value.
Here is a relevant question for accomplishing this step 3 is now a well-defined and understood problem to solve:
T-SQL substring - separating first and last name
Now you have separated the starting and ending values. Use another function which can explode this range. Step 4 is now a well-defined and understood problem to solve:
SQL: create sequential list of numbers from various starting points
SELECT all N between #min and #max
What is the best way to create and populate a numbers table?
and, also, insert it into the temp table.
Now what you should have is a temp table with every value in the exploded range.
Simply JOIN that to the other table on the values now, then to your source table on the ID reference and you're there.
My suggestion is to add one more field and many more records to your ranges table. Specifically, the primary key would be the integer and the other field would be the range. Records would look like this:
number range
1 1-2,5
2 1-2,5
3 na
4 na
5 1-2,5
etc
Having said that, this is still rather limiting because a number can only have one range. If you want to be thorough, set up a many to many relationship between numbers and ranges.
As far as I can tell you best option is something like below:
Create a table value function that accepts your ranges an converts them to a collection of ints. So 1-3,5 would return:
1
2
3
5
Then use these results to join to other tables. I don't have an exact function to do this at hand, but this one seems like an excellent start.
I’m somewhat of a newbie to SQL queries, especially anything containing logic, and although I've searched for hours finding the exact terms to search for is not easy in this case! I have a relatively simple one, I’m sure:
A table has 2 columns, and each row contains data about a function in a program. Some functions have a parent function associated (for grouping). Column A is the unique function ID. Column B indicates, when applicable, the parent function’s ID. All parent function IDs are independent and valid function IDs that exist elsewhere in column A.
For reporting purposes I need to list the functions grouped by their parent ID, listing the parent function with the child functions. I can easily report by parent function ID, but the problem is that a parent function does not know that it is a parent function because its column B is empty!
What I need to do is complete the value in Column B if it is empty and the function is referenced elsewhere as a parent function.
Otherwise stated, for each row that has a null value in Column B:
Take the value from column A
Check for the existence of that value in ANY row on column B
If there is a match, inject the value into column B (so that Column A and B have the same value)
What I have: (Query: SELECT function_id, parent_function FROM functions)
FUNCTION_ID PARENT_FUNCTION
4
13 4
79
138 4
195
314 345
345
What I need to have:
FUNCTION_ID PARENT_FUNCTION
4 4
13 4
79
138 4
195
314 345
345 345
Any Ideas? I can't wait to get more familiar with SQL! Thanks ahead of time.
This should work for you:
UPDATE functions
SET parent_function = function_id
WHERE parent_function IS NULL
AND function_id IN (SELECT parent_function FROM functions)
This will set parent_function equal to function_id where it has not yet been set, and where it appears somewhere in the parent_function column.
If you don't actually want to modify the table data but still return values that you need, you can use similar logic like this:
SELECT f.function_id, COALESCE(f.parent_function, f2.function_id) as parent_function
FROM functions f
LEFT JOIN functions f2
ON f.function_id = f2.function_id
AND f2.function_id IN (SELECT parent_function FROM functions)
maybe you can compare the two table using EXCEPT or INTERSECT
http://msdn.microsoft.com/en-us/library/ms188055.aspx
more tutorials>:
http://www.mssqltips.com/sqlservertip/1327/compare-sql-server-datasets-with-intersect-and-except/
How's this look?
select distinct
t1.funx, t1.parent,
case when t2.parent is null then t1.parent
else t2.parent end as newparent
from
tbl t1 left outer join
tbl t2 on
t1.funx = t2.parent
sqlFiddle