I am trying to fetch few information's from multiple tables using a select statement. All the tables are related to one single part of my Application (client). There are multiple entries in the application. For example let say 180 entries. The line number of these entries are not marked in any table. But while i am fetching the information using select statement i would want to know from which line of the entries in application my result is coming from.
Is there any ways to achieve this.
I am using Oracle database.
Sounds like you could use the DBMS_APPLICATION_INFO package to do what you want:
https://docs.oracle.com/database/121/ARPLS/d_appinf.htm#ARPLS003
https://oracle-base.com/articles/8i/dbms_application_info
http://www.dba-oracle.com/t_in_dbms_application_info_set_module__what_makes_the_module_name.htm
You can add the pseudo-column rownum to your query with something like:
select rownum, q.* from (... your query with order by clause...) q;
Related
Given a SELECT statement in Big Query and the Java SDK, what are my options to get the actual column names without fetching the data? I know I can execute the statement and then get the Schema via the TableResult. But is there a way to get the names without fetching data? We have a tool where we run arbitrary queries which are not known upfront and in my code I want to access the result columns by name.
Update: someone flagged this as duplicate of a 7 year old entry. I am however looking for a way to use the Java SDK alone to get the column names, not to do some magic with the query itself or query some metatable.
There are few options but the easiest is to add limit 0 to your query so for example:
SELECT * FROM projectId.datasetId.tableId limit 0
Hello I want to display results from unrelated tables where a text string exists in a column which is common to all tables in the database.
I can get the desired result with this:
SELECT *
FROM Table1
WHERE Title LIKE '%Text%'
UNION
SELECT *
FROM Table2
WHERE Title LIKE '%Text%'`
However my question is is there a more efficient way to go about this as I need to search dozens of tbls. Thanks for any help you can give!
ps the system I am using supports most dialects but would prefer to keep it simple with SQL Server as that is what I am used to.
There is a SP script you can find online called SearchAllTables (http://vyaskn.tripod.com/search_all_columns_in_all_tables.htm).
When you call it pass in the string, it will return the tables and columns as well as the full string.
You can modify it to work with other datatypes quite easily. It's a fantastic resource for tasks exactly like yours.
I am writing a log viewer app in ASP.NET / C#. There is a report window, where it will be possible to check some information about the whole database. One kind of information there I want to display on the screen is the number of times each generator (an entity in my domain, not Firebirds sequence) appears in the table. How do I do that using COUNT ?
Do I have to :
Gather the key for each different generator
Run one query for each generator key using count
Display it somehow
Is there any way that I can do it without having to do two queries to the database? The database size can be HUGE, and having to query it "X" times where "X" is the number of generators would just suck.
I am using a Firebird database, is there any way to fetch this information from any metadata schema or there is no such thing available?
Basically, what I want is to count each occurrence of each generator in the table. Result would be something like : GENERATOR A:10 times,GENERATOR B:7 Times,Generator C:0 Times and so on.
If I understand your question correctly, it is a simple matter of using the GROUP BY clause, e.g.:
select
key,
count(*)
from generators
group by key;
Something like the query below should be sufficient (depending on your exact structure and requirements)
SELECT KEY, COUNT(*)
FROM YOUR_TABLE
GROUP BY KEY
I solved my problem using this simple Query:
SELECT GENERATOR_,count(*)
FROM EVENTSGENERAL GROUP BY GENERATOR_;
Thanks for those who helped me.
It took me 8 hours to come back and post the answer,because of the StackOverflow limitation to answer my own questions based in my reputation.
I am using Jet SQL from excel using an ADODB connection to an IBM400 server to try and and get some data. I have done this fine before and it is fine with all other JET SQL commands however I have ran into a problem to which I am unable to solve. It is quite simple so I imagine that I am just not putting the correct syntax in but what I am trying to do is get some totals.
I have a table that contains part numbers and quantities within the locations of that part (more than one location per part). My goal is to have an sql command grab the total quantity (summing all locations) per part. I am able to do this one part at a time successfuly using: (for simplicity I will use part numbers 12345678 and 01234567)
SELECT SUM(CPJDDTA81.F4101JD.LIPQOH) FROM CPJDDTA81.F4101JD WHERE CPJDDTA81.F4101JD.IMLITM = '12345678'
CPJDDTA81.F4101JD is my table, IMLITM is the column name of part numbers, LIPQOH is the quantity on hand per location.
The single search produces the sum I want however the problem comes when trying to run more than one sum within one sql command. I have tried using a select iif command like the following:
SELECT IIF(CPJDDTA81.F4101JD.IMLITM = '12345678',SUM(CPJDDTA81.F4101JD.LIPQOH),IIF(CPJDDTA81.F4101JD.IMLITM = '01234567',SUM(CPJDDTA81.F4101JD.LIPQOH),0) FROM CPJDDTA81.F4101JD
This command provides an error saying that "=" is not a valid token (the = sign within the IIF statement). I was hoping that someone out there can help me write a correct statement to accomplish this. My actual part list will be much larger so I will be using VBA to construct the SQL statement but I need to learn how to do two parts first. Thanks ahead of time.
SELECT CPJDDTA81.F4101JD.IMLITM, SUM(CPJDDTA81.F4101JD.LIPQOH) AS TotalQuantity
FROM CPJDDTA81.F4101JD
GROUP BY CPJDDTA81.F4101JD.IMLITM
Does the above help?
Additional, the items can be limited by adding a WHERE clause.
SELECT CPJDDTA81.F4101JD.IMLITM, SUM(CPJDDTA81.F4101JD.LIPQOH) AS TotalQuantity
FROM CPJDDTA81.F4101JD
WHERE CPJDDTA81.F4101JD.IMLITM IN ('12345678', '01234567')
GROUP BY CPJDDTA81.F4101JD.IMLITM
I'm using firebird database and it does not seem to have ROWNUM or ROW_NUMBER() like sql server does so I cannot follow the procedure explained here.
I have a query whose result dataset is bigger than what my system memory can accommodate. I'm trying load the dataset in smaller chunks. I have a series of generic queries which I cannot modify and they could be anything. I know I can do
select first 5000 * from
(-my actual query here-)
to get the first 5000 records. But how can I go about getting the next 5000 records.
Thanks
Since FireBird 2.0 ROWS syntax is supported, ie you would use
select * from tab ROWS m TO n
I suggest you download FB's language reference update where it is documented.
In firebird you use Select First ? Skip ? to specific how many, and what your offset is.