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I have a bunch of Oracle SQL queries I'd like to prepare some visual model / diagrams for. For example, to show all of the tables, the joins, and the join conditions.
Does such a tool exist?
Yes, Oracle SQL Developer, and it's included with your license of Oracle Database...in other words, it's free.
Bonus, it's Java, so will run on Windows, OS X, and Linux.
Open a connection, this give you a SQL Worksheet.
Type your query, example:
select b.extra_column
,b.department_id
,b.department_name
,b.manager_id
,b.location_id
,c.employee_id
,c.first_name
,c.last_name
,c.email
,c.phone_number
,c.hire_date
,c.job_id
,c.salary
,c.commission_pct
,c.manager_id
,c.department_id
,a.location_id
,a.street_address
,a.postal_code
,a.city
,a.state_province
,a.country_id
from departments b
,locations a
,employees c
where a.location_id = b.location_id
and c.employee_id = b.manager_id
and b.department_id = c.department_id;
Click the Query Builder tab.
Voila.
Note there is a performance bug in current version, will be fixed for version 18.2. In other words, it will take a few moments to render the diagram for you today.
Also this, from the SQL text only with no need to create the tables: https://sqldep.com/
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I need to very large sample databaset for Oracle like Microsoft's AdwentureWorks or WideWorldImporters. I searched but didn't find. Can you help me please? By the way I know to HR or other samples.
You can create your own tables with large numbers of rows very easily using a statement like the one below. Just change the 1000 to however many rows you want in the table.
CREATE TABLE test_table
AS
SELECT LEVEL AS id,
DBMS_RANDOM.STRING ('p', ROUND (DBMS_RANDOM.VALUE (10, 50))) AS val1,
DBMS_RANDOM.STRING ('x', ROUND (DBMS_RANDOM.VALUE (100, 200))) AS val2
FROM DUAL
CONNECT BY LEVEL <= 1000;
here is some sample databases , hopefully is useful:
https://www.oracle.com/database/technologies/spatial-graph-here-data-downloads.html
or this one:
https://github.com/oracle/db-sample-schemas
The schemas are:
HR: Human Resources
OE: Order Entry
PM: Product Media
IX: Information Exchange
SH: Sales History
BI: Business Intelligence
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In the past year or so, I have been spending most of time working with noSQL databases. That said, I have started a new job that works with a SQL database and SQL Server Management Studio (SSMS). Any suggestions that would improve readability and make the query more concise would be much appreciated.
SELECT DISTINCT
[db1].[id] as "Node ID",
[db2].[name] as "Node Name",
[db3].[name] as "ISP",
[db4].[name] as "City",
CASE
WHEN [db1].[object_type_id] = 17
THEN 'Client'
WHEN [db1].[synthetic_location].[object_type_id] = 5
THEN 'System'
WHEN [db1].[object_type_id] IS NULL
THEN 'System'
END AS Type
FROM
[db1].[synthetic_location]
JOIN
[db2].[machine] ON [db2].[synthetic_location_id] IS NULL
JOIN
[db3].[internet_service_provider] ON [db3].[id] = [db1].[internet_service_provider_id]
JOIN
[db4].[geography_city] ON [db4].[geography_city].[id] = [db1].[synthetic_location].[geography_city_id]
WHERE
[db2].[status_type_id] < 1
AND [db1].[flags] = 6
Your query looks fine and is perfectly readable with one exception;
You should explicitly state INNER JOIN instead of just JOIN as it makes the intention clearer.
You can use tools like SSMS Boost or SQL complete that will help you to format the queries and those tools have so many additional features that can save lot of your time
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I am working on a TVF that is used in multiple stored procedures. How can I find all of the stored procedures that are using that TVF?
You can scour the metadata for mentions of your function, keeping in mind that it can produce false positives if this is a common name mentioned elsewhere or in comments, or miss instances if the function call is built up using dynamic SQL.
SELECT s.name, p.name FROM sys.procedures AS p
INNER JOIN sys.schemas AS s
ON p.[schema_id] = s.[schema_id]
INNER JOIN sys.sql_modules AS m
ON p.[object_id] = m.[object_id]
WHERE m.definition LIKE N'%tvfname%';
There are other ways in 2012, but since the question is also tagged 2005...
I've successfully used this;
SELECT *
FROM INFORMATION_SCHEMA.ROUTINES
WHERE OBJECT_DEFINITION(OBJECT_ID(ROUTINE_NAME)) LIKE '%TVFn%'
It is best to not search the ROUTINE_DEFINITION field of the view as it is capped.
PS - Cannot test on 2005, sorry
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I am new to databases. And our teacher gave us pretty hard assignment. There are two tables. First table nickname is abilities(of superhero's:) ) and second table name superheros.
We have to select nick of Superhero and his average(medial) range for those who has two abilities?
Image of both tables:
Original here: http://postimg.org/image/85pqbc47n/
I will not give you solution - after all, it's homework and you have to learn something :) But I can give you an advice - try to do one task at a time
first, find those superheroes who has only 2 abilities (actually, you can do this by quering only table with abilities)
second - try to find average range of abilities for all superheroes (here you'll need join)
combine your queries
take a look at join, group by, count and having
Don't feel bad if you can't write it at first attempt, your query is not super easy, but 'm sure you can do this.
You can use HAVING and AVG() for this:
SELECT s.NickName, AVG(a.Range)
FROM abilities a
JOIN superhero s
ON a.ID_SuperHero = s.ID_SuperHero
GROUP BY s.NickName
HAVING COUNT(DISTINCT a.Abilities > 1)
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I have this complicated SQL query for Oracle that I want to visualize in a diagram to make it understandable for my co-workers. I tried at http://snowflakejoins.com but it just chokes on it.
Has someone a better suggestion? I prefer a web-app on the internet and if not a desktop app for windows.
with
logs as (
select
l.job_id,
l.subjob,
sum(l.verwerkt) verwerkt,
sum(l.errors) errors,
max(l.datum) laatst
from
dinf_monitor_logs l,
dinf_monitor_jobs j
where
l.datum>sysdate-j.dagen
and j.job_id=l.job_id(+)
group by
l.job_id,
l.subjob
),
alllogs as (
select job_id, subjob, max(datum) laatst from dinf_monitor_logs group by job_id, subjob
)
select row_number() over(order by alllogs.job_id, alllogs.subjob) r,
alllogs.job_id,
alljobs.naam,
alllogs.subjob,
logs.verwerkt,
logs.errors,
alllogs.laatst datum,
alljobs.wikilink,
alljobs.loglink,
alljobs.contact,
case
when alllogs.laatst is null then 1
when round(sysdate-(alllogs.laatst+alljobs.dagen))<0 then 0
else round(sysdate-(alllogs.laatst+alljobs.dagen))
end overtijd,
case
when logs.errors-alljobs.max_errors>0 then 5
when logs.verwerkt-alljobs.min_verwerkt<0 then 7
when round(sysdate-(alllogs.laatst+alljobs.dagen))>0 then 3
else 11
end status
from logs, alllogs, (select job_id, naam, wikilink, loglink, contact, dagen, min_verwerkt, max_errors from dinf_monitor_jobs) alljobs
where
logs.job_id(+)=alllogs.job_id
and logs.subjob(+)=alllogs.subjob
and alllogs.job_id=alljobs.job_id
order by alllogs.job_id, alllogs.subjob
You can use the "Query Builder" tab of the Oracle's SQL Developer.
The result of your sample query will be:
Each of the sub queries are data sets, I would just make a plain English statement of what the query does, then describe the data sets and how they relate to one another in an entity-relationship manner, then show how the query satisfies the plain English statement. You can represent the E-R with any variety of tools.
Have found how to do it in Toad, which i prefer above Sql Developer.
Open the editorwindow, paste the sql, rightclick in the editorwindow and select "Send to queryviewer"
My sql above is too complicated to use this technique but it's nice to know i can use it in the future with more "normal" queries.
Points to Sergio.