Oracle is a relational DBMS (Database Management System) created by Oracle Corporation.
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Using OCI functions
I've never used Oracle with PHP before, what I'm doing is calling a stored procedure that returns a refcursor. Which is also a first. I use frameworks like Yii etc and don't seem to be able to use the ...
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1answer
29 views
Convert MS SQL datetime to Oracle varchar(32) interval
I have a query against an MS SQL database that takes the resulting dataset and stores it in an Oracle database table which then gets joined to another Oracle table using the column ...
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1answer
36 views
Oracle Database Communication/Operation
I am creating an application that will move specific data from one Oracle database and moving it to a MySQL database. I created this class to help keep myself organized and this class holds all of the ...
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1answer
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Highest andLowest in PLSQL
I have made a procedure to display the highest and the lowest popular Items for a particular time of a given date. The procedure works with no errors or exceptions ...
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0answers
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Generating business summary stats in SQL dynamically, based on an inputted date
I have the following Oracle SQL query to generate some system-stats. I am interested in making it a more efficient and readable query.
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0answers
54 views
Health insurance claims query involving joins to fetch one column
General feedback is welcome, but I am especially wondering if there is a way to make things more efficient where I am joining an entire large table to gain use of one column (like when I join tables ...
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2answers
58 views
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1answer
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Oracle query to split 1 row into two where conditions are applicable
The scenario question:
"I'm having difficulties with splitting a single row into two individual ones."
My test schema is:
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2answers
193 views
Checking for Duplicates, Except
I have a query that returns records that have duplicate names within a given DBSTATUS. I used to do this with a direct connection to the remote oracle database ...
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1answer
82 views
Refactor (DRY, KISS) QueryStatus event for VS Addin
I have complex logic in QueryStatus event (CommandTarget) for a VS Addin (VS 2010).
I'm a newbie using C#.
I would like elegant, easily maintainable code that follows DRY and KISS principles. Maybe ...
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3answers
219 views
Counting business days in a month, ignoring holidays
This table simply contains date information. I went ahead and used what I currently have since this is a one-time operation. However, since I only recently started working with Oracle, I would like to ...
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2answers
81 views
Out of one Oracle into another
A project that I have been working on required data to be transferred from an Oracle database into MySQL. The process I devised for that transfer involved a query (included below) on the Oracle ...
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1answer
2k views
Filter out date records which don't fall within or span a date range
I have records which have specific time spans. The need is to select records which adhere to the following three rules (read them as or conditions) concerning a ...
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1answer
58 views
Trying to avoid a double full scan with aggregates in query
I have a statistics query I'm trying to run against the below table:
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1answer
365 views
Refactor Oracle Entity Framework lambda query
I had a ugly problem and wrote an ugly query.
Query creates a cache that is used to get person id when I have {full_name, id_code?, birth_date?}. By question mark I mean that it is perfectly valid ...
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1answer
99 views
Slow delete query on table with composite index
after profiling my application, it turns out that a single method is taking 3 minutes to run, which is about a third of the total runtime.
The method deletes approx. 400.000 rows from each table ...
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3answers
664 views
Making a new column and setting default values equal to the COUNT of a certain condition in SQL? [closed]
I have 2 tables. (table1, table2)
Now, I would like to do something along the lines of:
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1answer
113 views
Tuning a query for performance
I am running this query and it takes several minutes to complete. How can I tune it (unfortunately I don't have the privileges to run an SQL tuning advisor)?
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1answer
2k views
Length limited listagg for muliple m:n relations in a view
I have a few views that all follow the same pattern. They select a primary key from some main table and then a few semicolon seperated strings of captions of related rows over many-to-many relations. ...
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2answers
701 views
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1answer
679 views
SQL double nested query
This query produces the results I want.
Is there a less wordy or more effective way to write this query?
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2answers
118 views
Searching through tables for a value
I have a PL/SQL stored procedure which searches for a row in 3 different tables (not all columns are the same).
The logic goes as follows:
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2answers
348 views
Comparing client lists with Cross Joins
I've written a query to compare the clients in our database with the people in a list that I've received. It needs to check if anyone from the list is one of our clients. I've created a temporary ...
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1answer
2k views
Creating a reusable C#.NET Oracle Query Builder
I write a metric ton of queries for an Oracle environment every day. These are reports that often require multiple separate queries that no end of joins and sub-queries will satisfy, hence lots of ...
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3answers
1k views
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3answers
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2answers
72 views
Oracle nested query
Essentially I'm attempting to select the top read (based on read_date), and check if it has a ...
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1answer
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1answer
887 views
Getting list from an Oracle database and storing it in an object
I have two admin groups - VCS, and VPN. For each group, I need to get the list of all the people in that group, along with their IDs.
What is the best way to do this? Could you please suggest if it ...
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1answer
762 views
Compare Oracle Table with SQL Server Table and Update/Insert
Below is the current code which is used to update/insert records from Oracle view to SQL Server table using Dapper. There is not a field to check last record updated date in the oracle view so I have ...
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1answer
617 views
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2answers
265 views
Query for building a view
I am currently trying to improve on a query that is being used to build a view. The query is in PL/SQL, in an Oracle database. There are 3 different types of reports (100,200, and 300) that are ...
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1answer
120 views
XML schema for Database Unit Tests
I am attempting to develop an XML schema (XSD) to represent a set of unit tests for some code. (Specifically, I am testing Oracle PL/SQL stored procedures.)
I would like to have something that ...
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1answer
180 views
Self Join Exercise. Have I over-complicated it?
This my 3rd question on the same exercise, but by no means a duplicate. The two previous questions were posted on StackOverflow here and here.
Now I'm posting my Oracle solution (below) that works. ...
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1answer
470 views
Merging CSV data into database
Base functionality:
Reading a CSV file and inserting in database after replacing values with web macro.
Reading values from CSV @ first header information NO,NAME next to that, then read one by one ...
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1answer
373 views
Simplify Oracle SQL Unions
I have the following SQL query I am trying to use (save/make easy future modifications to) that is essentially the same query over and over and over, UNIONed each ...
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4answers
256 views
Simplify Oracle SQL: Treat null date as 'N' and non-null date as 'Y'
This works, but nvl AND case seem redundant.
Basically, if null then 'N' else 'Y.
CHICKEN_HATCH_DATE is a DATE data type.
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2answers
325 views
How to optimize this SQL delete
I want to optimize the performance of this SQL query. If I populate this hashtable with one million keys the query will take around minute. How I can optimize this Java method for faster execution?
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1answer
321 views
Parsing Oracle errors with a ksh function
Some time ago I wrote a small routine to run some quick n' dirty queries (and with that I mean it is not used for large queries) against an Oracle DB, but also wanted to do it a bit easier to parse ...
3
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1answer
148 views
Oracle to MSSQL data migration is slow on INSERT
I wrote a method that gathers data from an Oracle server, formats and encrypts the data then inserts it into a MS SQL server. The method moves about 60000 records and takes a bit long and is a little ...
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2answers
957 views
Oracle PL/SQL decryption function breaking index?
I have a package called pkg_crypto.
My select looks like this:
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2answers
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2answers
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Strategy Pattern for Oracle Database?
I'm trying to implement the Strategy Pattern into my current code base. I would like to know if i'm going in the right direction on this?
IOracleDB.cs:
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