I have two tables in MS Access that have the same Name_ID column, the only problem is that they differ slightly. Name_ID in table 1 looks like this:
Name_ID
Newton, Kate Little
River, Jane Armen
Barker, Bob Jep
Jake, Lee
And in table 2 it looks like this:
Name_ID
NEWTON, KATE L MD
RIVER, JANE A DO MS
BARKER, BOB J. (MD)
JAKE, LEE I.
I'm struggling with how to join the tables. I tried doing a join using like, based on Access/SQL Server 2008 Join using Like not working, but it's not working:
Select table1.*, table2.col from table1
left join
table2
on table1.Name_ID like '*' & table2.Name_ID & '*';
I also tried:
Select table1.*, table2.col from table1
left join
table2
on instr(table1.Name_ID, table2.Name_ID) > 0;
Both queries execute, but return blank columns. Any idea why it's not working, or a better way?
Both queries are looking for a full name string within another full name string. How would you expect Newton, Kate Little to match to *NEWTON, KATE L MD*? And for the second query, NEWTON, KATE L MD is not within Newton, Kate Little.
Probably best can do is extract last name part and match on that. Assumes names are not repeated and not multiple people with same last name and always last name followed by a comma.
SELECT Table1.Name_ID, Table2.Name_ID
FROM Table1 LEFT JOIN Table2
ON Table1.Name_ID LIKE Left(Table2.Name_ID, InStr(Table2.Name_ID,",")) & "*";
Related
I have the following view X
SELECT
ssn AS "Return1"
bla AS "Return2"
dla AS "Return3"
FROM v_stored_values
When using this view, I want to replace the number value of "svn" with a string value that can be found in the following view Y
SELECT
ssn AS "Return1"
string AS "Return2"
FROM v_ssn
So instead of
ssn | bla | dla
342 dff fdd
it should be
name | bla | dla
Thomas dff fdd
What would be the best way to combine those two views, who otherwise share no similarities, in a query?
You seem to be looking for a join. Assuming that v_ssn has columns ssn and name, that would look like:
select s.name return1, v.bla return2, v.dla return3
from v_stored_values v
inner join v_ssn s on s.ssn = v.ssn
If there is a possibility that some of ssns from v_stored_value are not available in v_ssn, you might want to use a left join instead, so the records are not eliminated from the resultset.
I have a counselling appointment website. Currently I list clients in one table, but also have couples listed by id in a second table for when they book a couples session. ie:
client
id_no first last
564 John Smith
983 Mary Jones
999 Mark Fields
882 Joan Hancock
couple
id_no client1 client2
623 564 983
555 999 882
I would like to write a single select statement, using aliases, which will list out couples on a single line. Up until now, I have been doing a simple join then cleaning up the result using php after running the query, but would like to clean this up in sql so that I get a result like the following
id_no first_1 last_1 first_2 last_2
623 John Smith Mary Jones
555 Mark Fields Joan Hancock
I suspect that sub queries might be involved, but can't for the life of me wrangle them to get this result.
Update
I just tried the following:
SELECT id_no,first_1,last_1,first_2,last_2
FROM ( SELECT a.id_no AS id_no, b.first AS first_1,b.last AS last_1
FROM couple AS a, client AS b WHERE a.client1=b.id_no ) c1
JOIN ( SELECT a.id_no AS id_no, b.first AS first_2,b.last AS last_2
FROM couple AS a, client AS b WHERE a.client2=b.id_no ) c2 ON
(c1.id_no=c2.id_no)
And am getting a message that "Column 'id_no' in field list is ambiguous". Not sure if I am on the right track
You are getting the exception because you did not specified the table alias to id_no as this column belongs to both tables, so SQL is not sure which column to return, so it will throw ambiguous column error.
Also you don't have to use sub queries, you just need to join client table twice with couple table, one for client1 and other one for client2 like below
Select cp.id_no,
cl1.first as first_1,
cl1.last as last_1,
cl2.first as first_2,
cl2.last as last_2
From couple cp
inner join client cl1 on cl1.id_no = cp.client1
inner join client cl2 on cl2.id_no = cp.client2
I have got the following 3 fields in a file: person_ows person_is_owed amount
Example content:
Bob John 100
John Bob 110
What does a SQL look like that produces:
Bob John 100 110
John Bob 110 100
Sorry if this is a trivial question, but I am just trying to learn SQL and I find it really like HELL!
So, what you need is to be able to JOIN two rows. In this case you'll probably want an OUTER JOIN assuming that there isn't always a match of each owing the other. Now you just need to come up with your JOIN criteria, which in this case is going to be based on the names (person_owes and person_is_owed):
SELECT
T1.person_owes,
T1.person_is_owed,
T1.amount AS owes_amount,
COALESCE(T2.amount, 0) AS is_owed_amount
FROM
My_Table T1
LEFT OUTER JOIN My_Table T2 ON T2.person_is_owed = T1.person_owes
The COALESCE is just to make sure that when there is no match that you get a value of 0 instead of NULL.
Also, this assumes that there is only going to be one of each combination of person_owes and person_is_owed. If you might have two rows showing that John owes Bill two different amounts of money then you would have to adjust the SQL above and it would be a bit more complex.
If you plan to use SQL much then you should invest the time in reading one (or preferably more) beginning books on the subject.
Assuming that the combination of (person_ows, person_is_owed) is unique
select person_ows,
person_is_owed,
amount,
(select t2.amount
from the_table t2
where (t2.person_ows, t2.person_is_owed) = (t1.person_is_owed, t1.person_ows))
from the_table t1
I'm not sure if I'm using the correct terminology.
SELECT movies.*, actors.`First Name`, actors.`Last Name`
From movies
Inner Join actors on movies.`actor1` Where movies.`actor1` = actors.`indexActors`;
#Inner Join actors on movies.`actor2` Where movies.`actor2` = actors.`indexActors`;
I have the 2nd line commented out, each one works individually, and I'm wondering how to combine them.
2ndly, when I execute the query, I get the results:
ID Title Runtime Rating Actor1 Actor2 First Name Last Name
1 Se7en 127 R 1 2 Morgan Freeman
2 Bruce Almighty 101 PG-13 1 3 Morgan Freeman
3 Mr. Popper's Penguins 94 PG 3 4 Jim Carrey
4 Superbad 113 R 4 5 Emma Stone
5 Crazy, Stupid, Love. 118 PG-13 4 Null Emma Stone
Is there a way to add the results from the 2nd join to the rightmost columns?
Also, is it possible to combine the strings/VARCHARs from First Name and Last Name, and then have that value show up under the corresponding Actor Field?
(aka the field under Actor 1 for row 1 would be "Morgan Freeman" instead of "1")
Thanks.
Your sql is not valid, but you can achieve your goal by joining to the same table twice, with different aliases. This sort of thing
select blah blah blah
from table1 t1 join table2 t2 on t1.field1 = t2.field1
join table2 t2_again on t1.field1 = t2_again.field2
etc
As far as joining first and last names in a single field, most databases have a way to concatenate strings, but they are not all the same. You'll have to specify your db engine.
Can I use a table column within a Like operator? I've created an example,
TableA
Names Location
Albert Smith Senior Aberdeen
John Lee London
Michael Rogers Junior Newcastle
Mary Roberts Edinburgh
TableB
Names
Albert Smith
John Lee
Michael Rogers
I want to do a query such as:
SELECT TableA.Location
into NewTable
FROM TableA
WHERE TableA.Names Like '*[TableB.Names]*';
In this case, there would be no match for Mary Roberts, Edinburgh but the first three locations would be returned.
Is it possible to put a column into a like statement?
If not does anyone have any ideas how I could do this?
Hope you can help
PS I can't use an actual asterisk since this is removed and the text italicised, also I have read about using % instead but this has not worked for me.
You can join the two tables and use LIKE within the JOIN clause:
SELECT TableA.Location
into NewTable
FROM TableA
INNER JOIN TableB ON TableA.Names LIKE TableB.Names & '*';
Honestly, I had no idea that you can do this in Access before I tried it just now :-)