I am putting a table together with the following code:
create table temp
(pnum integer,
pnam varchar(30));
insert into temp(pnum)
select player_number
from players;
insert into temp(pnam)
select player_name
from positions;
It basically works except for the fact that, while both columns are preeent throughout the whole table, they are filled out sequentially. I want all the data from the second select to appear after the data from the first select ON THE SAME LINE. At present, I simply get a bunch of blank lines in the pnam column (while pnum fills out nicely), then get a bunch of blank lines in the pnum column (while pnam fills out nicely). IF anyone knows how to solve this, your prompt reply will be incredibly appreciated!
Yep - the problem is you're doing 2 discrete and seperate inserts, so SQL doesn't know that you want the numbers and the names to match up. You need to rewrite the Select statement into one.
Assuming that both the players and the positions table contains a filed called player_number, you can use this to tie the two tables together (if not, pick a unique field thats in both tables that ties the data together and use that.
insert into temp(pnum,pnam)
select player_number,player_name
from players inner join positions on players.player_number = positions.player_number
Things to note:
Line 1 - see how we are now inserting into both columns at the same time. This will give you the data layout you're looking for
Line 2 - see how we're selecting two bits of data to insert
Line 3 - this is where we join the two tables together (using player_number columnn from both). We need to join them together because in Line 2 we need to select one column from each.
Hope that makes sense. If not, shout. Also, maybe read up on inserting rows using INSERT and SELECT and using inner joins
Related
I have a database with a couple tables that tracks personnel errors that require rework by another person. Basically, a person on the job could rework up to 10 different work packages by other people throughout their shift. To make it easy, I just have columns in the table for rework_1/original_worker_1/rework_comment_1 (repeated up to 10) and the person who had to rework it. All of my worker's names are in a separate table so I can add people and my forms update dynamically with their names. What I want to do is this:
Pull a person from my worker's name table.
Search for all occurrences of their name in another table in in column original_worker_X (where X is 1 - 10).
Output the values: Workers Name / How Many Times I found it in the original_worker_X columns.
From here I would need to make a bar graph so that each person's name had a bar with how many times someone had to rework something they did originally.
If I could do this with PHP and MySQL I would be in the money because I could brute force something with some PHP variables, queries, and loops but I am an access novice at best! I appreciate any help you wizards can provide.
Table 1:
Table 2:
Expected Output Numbers:
so i will suggest you do the following
Create a new table,lets say table 3 with three fields
A. ID, pkey, auto number
B. original_worker, text field
C. Person_doing_rework, text field
You will need ten insert statements that will insert each of the original worker 1-10, as well as person doing re-work , this is to a normalise table
Currently, the design of your table is a bit crude, and having a select statement with group by columns numbering 10 is not achievable
Below are samples of the insert statements
INSERT INTO Table3 (original_worker,Person_doing_rework)
SELECT original_worker1,Person_doing_rework
FROM table2 where isnotNull(original_worker1)
INSERT INTO Table3 (original_worker,Person_doing_rework)
SELECT original_worker2,Person_doing_rework
FROM table2 where isnotNull(original_worker2)
replicate this for original_worker3 to original_worker10
Third step
You need a delete statement that will delete all from table 3, this is to ensure that the records from table 3 is not duplicated, since we don't have a pkey/fkey relationship between table 2 and 3
Fourth step
Place all the queries into a macro in the following order
A. Delete query to run first
B. Insert queries to run next
Fifth step
Add a msgbox in the macro, that will run last, this is to inform you that all the other macro steps, i.e A and B above has successfully run.
Sixth step
You can now have a select statement from table 3 that can count the number of times an original workers' work is re worked upon, because you now have two main fields in table 3, one for original_work, and two for Person_reworked.
So any time you want to find out how many times some ones work has been re worked upon, you have to just click the macro button, this will run all the queries and put values you need in the table 3, after which you can view the details via the query in step 6.
SELECT original_worker, Count(Person_doing_rework), FROM table3 GROUP BY original_worker;
I'm looking for a way to join two (sometimes more) tables.
I'll start with two and add as I get the pieces working.
Table1 has two columns that identify it
T1ContainerID
T1ObjectID
Table2 has similar columns but starts with T2 but the values will match
T2ContainerID
T2ObjectID
In Table2 there are two columns I am targeting
ObjectName
ObjectValue
There can be any number of ObjectName entries for a given record.
For instance one may have name, address,and a date
another may have Name, address,port,date,ServerName,Device,Status
What I need is a way to pivot all of the potential columns in Table2 in line with Table1 and is that value is not in Table2 for table1 then just make it NULL. I want the header of these columns to be the ObjectName and the value to be ObjectValue. If i can't get a wildcard to grab all potential values i can settle for just calling out each column manually. I was only hoping for a wildcard as it may change as different values for new records get added. Worst case i just adjust code to add anything new.
I do have a bunch of queries that rebuild the database every night and dump it into a different database but I'd like to have a query to pull the results from the main database to get current values rather than something that was run every morning.
I'm trying to achieve 2 joins. If I run the 1st join alone it pulls 4 lots of results, which is correct. However when I add the 2nd join which queries the same reference table using the results from the select statement it pulls in additional results. Please see attached. The squared section should not be being returned
So I removed the 2nd join to try and explain better. See pic2. I'm trying to get another column which looks up InvolvedInternalID against the initial reference table IRIS.Practice.idvClient.
Your database is simply doing as you tell it. When you add in the second join (confusingly aliased as tb1 in a 3 table query) the database is finding matching rows that obey the predicate/truth statement in the ON part of the join
If you don't want those rows in there then one of two things must be the case:
1) The truth you specified in the ON clause is faulty; for example saying SELECT * FROM person INNER JOIN shoes ON person.age = shoes.size is faulty - two people with age 13 and two shoes with size 13 will produce 4 results, and shoe size has nothing to do with age anyway
2) There were rows in the table joined in that didn't apply to the results you were looking for, but you forgot to filter them out by putting some WHERE (or additional restriction in the ON) clause. Example, a table holds all historical data as well as current, and the current record is the one with a NULL in the DeletedOn column. If you forget to say WHERE deletedon IS NULL then your data will multiply as all the past rows that don't apply to your query are brought in
Don't alias tables with tbX, tbY etc.. Make the names meaningful! Not only do aliases like tbX have no relation to the original table name (so you encounter tbX, and then have to go searching the rest of the query to find where it's declared so you can say "ah, it's the addresses table") but in this case you join idvclient in twice, but give them unhelpful aliases like tb1, tb3 when really you should have aliased them with something that describes the relationship between them and the rest of the query tables
For example, ParentClient and SubClient or OriginatingClient/HandlingClient would be better names, if these tables are in some relationship with each other.
Whatever the purpose of joining this table in twice is, alias it in relation to the purpose. It may make what you've done wriong easier to spot, for example "oh, of course.. i'm missing a WHERE parentclient.type = 'parent'" (or WHERE handlingclient.handlingdate is not null etc..)
The first step to wisdom is by calling things their proper names
So I need to figure out how to insert into a table, from another table, with a where clause that requires me to access the table that I am inserting into. I tried an alias from the table I am inserting into, but I quickly found out that you cannot do that. Basically, what I want to check is that the values that I am inserting into the table match a particular field within the table that I am inserting into. Here is what I've tried:
INSERT INTO "USER"."TABLE1" AS A1
SELECT *
FROM "USER"."TABLE2" AS A2
WHERE A2."HIERARCHYLEVEL" = 2
AND A2."PARENT" = A1."INSTANCE"
Obviously, this was to no avail. I've tried a couple other queries, but they didn't me anywhere, either. Any help would be much appreciated.
EDIT:
I would like to add rows to this table, not add columns to the table. The two tables are of the exact same structure -- in fact, I extracted the data already in table1 from table2. What I have in table1 currently is a bunch of records who have NO PARENT, but an instance. What I want to add is all the records who have a parent in table2 that are equal to the instance in table 1.
Currently there is no way to join on a table when inserting. The solution with the subselect where you select from the table, is the correct.
Aliasing the table you want to change is only possible with UPDATE, UPSERT and MERGE. For these operations it makes sense, as you need to match a column and then decide if you need to update it or insert something instead. In your example the line from table1 that you match is not relevant, as you don't want to change it, so from the statement point of view it is not really relevant that the table you use in your subselect is the same that the one you insert into.
As alternative, I can suggest you following solution, which is equivalent with yours:
INSERT INTO "user"."table1"
SELECT
A1."ROOT",
A1."INSTANCE",
A1."PARENT",
A1."HIERARCHYLEVEL"
FROM "user"."table2" AS A1
WHERE A1."INSTANCE" in (select "PARENT" from "user"."table1")
AND A2."HIERARCHYLEVEL" = 2
This gave me the answer I was looking for, although I am sure there is an easier -- or more efficient -- way to do it.
INSERT INTO "user"."table1"
SELECT
A1."ROOT",
A1."INSTANCE",
A1."PARENT",
A1."HIERARCHYLEVEL"
FROM "user"."table2" AS A1,
"user"."table1" AS A2
WHERE A1."INSTANCE" = A2."PARENT"
AND A2."HIERARCHYLEVEL" = 2
I've 250+ columns in customer table. As per my process, there should be only one row per customer however I've found few customers who are having more than one entry in the table
After running distinct on entire table for that customer it still returns two rows for me. I suspect one of column may be suffixed with space / junk from source tables resulting two rows of same information.
select distinct * from ( select * from customer_table where custoemr = '123' ) a;
Above query returns two rows. If you see with naked eye to results there is not difference in any of column.
I can identify which column is causing duplicates if I run query every time for each column with distinct but thinking that would be very manual task for 250+ columns.
This sounds like very dumb question but kind of stuck here. Please suggest if you have any better way to identify this, thank you.
Solving this one-time issue with sql is too much effort. Simply copy-paste to excel, transpose data into columns and use some simple function like "if a==b then 1 else 0".