Or with SQL, whatever needs.
I have three sheets(North, South, West) inside each table with columns DATE, REP, UNIT,NORTH(south west). I have data in rows like, 7/11/16, SMITH,FBI,$38.50 in sheet NOrth, and then in sheet West, 7/11/16,SMITH,FBI,$5.00. How to union or merge this kind of data? I tried with:
SELECT *from North$
Unon all
SELECT *from South$
Union all
Select *from West$
But, i only get append data. Those three tables have 47rows, i want those same rows in North and West to be joined in one row in new table!
Can i upload workbook? and how?
I would use the Power Query Merge command to join the rows from North and West. You haven't indicated what columns to join on but I'm sure you'll figure it out. The Merge popup window is quite helpful.
You haven't said what your requirements are for South - possibly a 2nd Merge?
Related
I'm sorry for the title, I couldn't come up with anything more specific.
Here's an example of my problem.
I have 2 tables.
london(name varchar,email varchar)
madrid(name varchar,email varchar)
What I'm doing is getting data from both tables(please mind that in MY case we are talking about over hundred of them) and present data for each as well as "global" data for all of them combined. For now I'm going through table_schema and loop through all the tables. What I would like to do is create a third table
global(name varchar,email varchar)
which would store every commit in both london and madrid upon entry. Is there a way of creating "symlinks" and not hard copying every entry? Every entry has an unique ID.
Also, I'm not in position to merge the db into one table.
Why not create a VIEW Called global which UNIONS the results of london and madrid?
SELECT A.*,'LONDON' as City
FROM london A
UNION ALL
SELECT A.*, 'MADRID'
FROM Madrid A
I added a city columns so you had a way to know WHICH record came from which table.
UNION ALL avoids the running of the distinct in just a union which aids performance.
I have two tables that have different data that I need to merge. They do have similarities such as: Order number, Name, type or product. But they have separate data as well like: Order date, and Engravings.
Would I do two separate Append queries in Access into a merged table? Or one Append queries? Or just keep the data separate?
I am new to Access and trying to find the best way to approach this.
Merging the two tables into one completely defeats the purpose of using a database and you're better off using excel at that point. You want to split the data as much as possible along logical lines so that you can find, say... all the orders that Mr X has ever made for a specific product. And in that case you're going to want to have separate tables for customers, orders, engravings and the like.
The best practice from a design standpoint is to place fields that each table has in common into a third "master" table, then create relationships from that table to the existing tables and delete the data that has been transferred to the main table (except for the primary keys, which have to be common with your master table).
To create the master table, use a Make Table query to generate the master table based on one of your tables, then an append query to add any products in the master table that might not be common to both, based on the other table. Finally, delete queries for each table would rid you of redundant data in both original tables.
However, I strongly suggest you use Microsoft's tutorials and download the NorthWind sample database so you can get an idea of what a properly structured database looks like. The beginner's learning curve for access is very steep and having well built example databases is almost a requisite.
Make a backup of your database(s) and play with it until it turns out right. Do not make the mistake of playing with live data until you know what you're doing.
As you have similar fields on either table, take the Order number field from both tables using a union query. Something like:
SELECT tbl_Delivery_Details.OrderNo
FROM tbl_Delivery_Details
GROUP BY tbl_Delivery_Details.OrderNo
UNION
SELECT tbl_Delivery_Header.[Order number]
FROM tbl_Delivery_Header
GROUP BY tbl_Delivery_Header.[Order number];
This would take the order numbers from the delivery details table and from the delivery header table and merge them into one list with only one instance of each order number. Save the query.
You could then use this query in a new query. Bring in your 2 tables to this query and insert the fields from either table that you require.
As users add records to the tables they will be added to the union selet query when it is next run.
PB
It depends on what you want to do. Let's assume you have tables A (with 50 records) and B (with 75) records, and both tables have a similar column called OrderID.
Appending Rows:
If you want to create a table with 125 total records by combining records (rows) from A and records (rows) from B, run the following two queries:
Query 1:
SELECT A.ORDER_NUMBER, A.TEXT_FIELD1 as DATA INTO C
FROM A;
Query 2:
INSERT INTO C ( ORDER_NUMBER, DATA )
SELECT B.ORDER_NUMBER, B.TEXT_FIELD2
FROM B;
Appending Columns: If you want to create a table with 75 total records where you are appending columns from A to the columns in B, then run the following query:
SELECT B.ORDER_NUMBER, A.TEXT_FIELD1, B.TEXT_FIELD2 INTO C
FROM A RIGHT JOIN B ON A.ORDER_NUMBER = B.ORDER_NUMBER;
... in a similar way, you can append columns in B to columns in A in a new table C with a total of 50 records by running the following query:
SELECT A.ORDER_NUMBER, A.TEXT_FIELD1, B.TEXT_FIELD2 INTO C
FROM A LEFT JOIN B ON A.ORDER_NUMBER = B.ORDER_NUMBER;
I am trying to get the details from mysql database.
My table have location field.
Data is like below
Location
India
UK,Finland, India
USA, NZ, AUS, Spain
I am trying to get the count for each location.
select count(distinct location) from posting
This is the query i have written at the moment for testing purpose. It return me count.
I want to get the details like below.
India -2
UK - 1
Finland -1
USA - 1
Something like that.
Note Please ignore dash as this is just to show you what i want.
Please advise me as i am not good in database.
You should not be storing multiple values in a single columns. Delimited strings are not the right way to store values in SQL. The proper way is a junction table.
If I assume that you have a list of locations, then you can do:
select l.location, count(*)
from location l join
posting p
on find_in_set(l.location, p.location) > 0;
If you don't have such a table, I would recommend that you focus on fixing your data structure first, rather than trying to get such a query to work.
SELECT COUNT(location),location FROM posting;
Try this one out. It will give you a similar output.
I am seeing a weird problem with MYSQL GROUP BY.
I have a query...
SELECT schools.schoolregion,
Count(schools.schoolregion) AS regioncount,
(
SELECT Count(jobs_jobsubject)
FROM 'jobs'
WHERE 'jobs_createdDate' BETWEEN '$startofyear'
AND '$endofyear') AS regionjobstotal
FROM 'jobs'
LEFT JOIN 'schools'
ON 'jobs_schoolID'='SID'
WHERE 'jobs_createdDate' BETWEEN '$startofyear'
AND '$endofyear'
GROUP BY 'schoolRegion'
...in which I am attempting to total the number of job postings listed per region and group by region. I have two tables, one with a list of schools and another with job information that has a column value that joins back to the school. I need the region total, and the overall total of jobs within a time period (hence the sub query).
When I run this query, I get everything that I expect - except that I am getting a duplicate region listing in the returned results of the GROUP BY function.
For example, here is the table that I am getting but not sure why the duplicate for the Middle East.
schoolRegion regioncount regionjobstotal
Africa 1 38
Asia 6 38
Middle East 20 38
Middle East 11 38
I thought maybe there was an extra character or something, but I could not find/see anything different about the values within the tables - which for that column is being stored as type "text". Is there anything I can check for? Is it something to do with the query?
Any help would be fantastic and much appreciated!!
My guess is that the data is not ordered by schoolRegion. I would add an ORDER BY schoolRegion ASC to your query to ensure that they are organized thusly. :)
OMG, do I feel like a noob!!
When I adjusted the query to list the schools, there was only one school that was not included in the GROUP BY. Initially when I looked at this hours ago, inline editing in PHPMYADMIN didn't show that there was a character return AFTER the text - so I wrote off that it was the text of the value being stored. But when I checked the box to edit the row individually and not inline and went to that column value - low and behold - a carriage return!!! Sometimes it's the little things like that which kill and humble me.
First, i do not think you can supply a child select statement as a column in your parent select statement "(SELECT COUNT(jobs_jobSubject)...".
Also since the where clause for your child and parent select are thesame, why not use a single select statement and get the count of both.
SELECT schools.schoolRegion,
COUNT(schools.schoolRegion) AS regioncount,
COUNT(jobs_jobSubject) AS regionjobstotal
FROM 'jobs' jb
INNER JOIN 'schools' sc ON jb.jobs_schoolID=sc.SID
WHERE 'jobs_createdDate'
BETWEEN '$startofyear' AND '$endofyear'
GROUP BY 'schoolRegion'
I have a table with entity-attribute-value structure. As an example, as entities I can have different countries. I can have the following attributes: "located in", "has border with", "capital".
Then I want to find all those countries which are "located in Asia" and "has border with Russia". The straightforward way to do that is to join the table with itself using entities are the column for joining and then to use where.
However, if I have 20 rows where Russia in in the entity-column, than in the joint table I will have 20*20=400 rows with Russia as the entity. And it is so for every country. So, the joint table going to be huge.
Will it be not more efficient to use the original table to extract all countries which are located in Asia, then to extract all countries which have border with Russia and then to use those elements which are in both sets of countries?
You shouldn't end up having a huge number of records so this should work
SELECT a.entity,
a.located_in,
a.border
FROM my_table a
WHERE a.border in (SELECT b.entity FROM my_table b WHERE b.entity = 'RUSSIA' )
AND a.located_in = 'ASIA'
You are confusing join with Cartesian product. There could never be more rows in the join then there are in the actual data, the only thing being altered is which elements/rows are taken.
So if you have 20 Russian rows, the table resulting from the join could never have more than 20 Russian entries.
The operation you suggest using is exactly what a join does. Just make sure you have the appropriate indices and let MySQL do the rest.