I am trying to read the contents of a text file that I uploaded using the page item file browser but I cannot figure out how to get the files contents.
I don't need it to be pushed into a table or anything, I just want a string represetation of it in a text area, for example. Or to be stored into a variable so I can process.
Apologies for the vagueness if any. I have tried a few ways but I am not sure, can I get the contents somehow using the WWV_FLOW_FILE?
The only solutions I have seen are using the Wizard region with the data mapping/verification breadcrumbs which is not what I need.
You can find the uploaded file as a BLOB inside the WWV_FLOW_FILE. If you just want to show it, into lets say a text field named P1_some_text_field, you can simple add a procedure like this on the page where you do the upload:
BEGIN
SELECT utl_raw.cast_to_varchar2(dbms_lob.substr(blob_content))
INTO :P1_some_text_field
FROM wwv_flow_files
WHERE created_on =
(SELECT MAX(created_on) FROM wwv_flow_files WHERE CREATED_BY = :APP_USER
);
END;
Please note that this will retrieve at most the fist 32767 characters of your file.
When I upload the file to WWV_FLOW_FILES, I then used a pl/sql statement to get the ID of the last file uploaded by the user and send the ID through another pl/sql statement which launches a powershell script on the server to download the file. The file is then processed on the server.
Related
I need to burn a blob column from an image that is saved in windows.
How do I declare the image path in Oracle PLSQL?
Ex:
DECLARE
dest_lob BLOB;
-- this line report ORA22285 "non-existent directory or file for %s operation"
src_lob BFILE := BFILENAME('MY_DIR', 'C:\Users\gus\Desktop\image.jpg');
BEGIN
INSERT INTO teste_gustavo_blob VALUES(2, EMPTY_BLOB())
RETURNING imagem INTO dest_lob;
DBMS_LOB.OPEN(src_lob, DBMS_LOB.LOB_READONLY);
DBMS_LOB.LoadFromFile( DEST_LOB => dest_lob,
SRC_LOB => src_lob,
AMOUNT => DBMS_LOB.GETLENGTH(src_lob) );
DBMS_LOB.CLOSE(src_lob);
COMMIT;
END;
Note: I'm trying to insert a record into a table through a Windows machine using SQLDeveloper. The database is on a remote server.
the path needs to be part of the directory object definition, and the file name is just that - just the file name. Example;
CREATE DIRECTORY MY_DIR AS 'C:\Users\gus\Desktop';
..
BFILENAME('MY_DIR', 'image.jpg');
Note that the directory is created on the server not your local machine. So if you are trying to create a file on a local machine, this will not work in pl/sql. PL/sql runs on the server, not the client. In that case, you need to code a client.
The database can only see directories which are local to it. It cannot see files on your PC (unless the database is running on that PC). So you cannot load your file through PL/SQL.
However, you say you are using SQL Developer. You can load a BLOB by editing the table's data in the Table Navigator. Click on the Data tab then edit the cell (the BLOB column of the row you want to load the file into). Use the Local Data > Load option to upload your file. That Jeff Smith has publish a detailed step-by-step guide on his blog.
I had a similar problem recently. I needed to dev test a feature and I needed a PDF file in my DB. I read few questions here and formulated an answer. I inserted a row manually with SQL and changed the file manually after that.
The SQL:
insert into ATTACHMENT_TABLE (id, file_content) values
(1, utl_raw.cast_to_raw('some dummy text'));
Using DBeaver, I edited the row and loaded the file from my windows PC. The end result is a row which contains the PDF file I wanted.
I'm trying read a file from a PL/SQL procedure but I am geting ORA-00942 Table or view does not exist error.
Caused by: Error : 942, Position : 21, Sql =
SELECT UBIC_ID FROM LIST_UBICS
, Error Msg = ORA-00942: table or view does not exist
I have a file with an id per line. This file is called list_ubics.csv. I have a File model and a datastore pointing to the file called LIST_UBIC with the UBIC_ID Field.
I created a Task in a new Procedure with this SQL:
SELECT UBIC_ID From LIST_UBICS
LIST_UBICS is my datastore I don't have any table with these name.
I want read these file and make some processing for each line but I don't see any way in the docs to read a text file that works for me.
How can I read this file?
Thanks in advance for any help.
An ODI Procedure written in PL/SQL (Oracle Technology) will be pushed down on the database. The database executing doesn't know about the File Datastore and can not execute SQL statement against it.
If the goal is to load the file with ODI it can be done using an interface (11g) or a mapping (12c) with LKM File to SQL. That will copy the content of the file into a table in the database and any SQL statement can then be executed against it.
Alternatively, it is possible to create a directory in the database, land the file there and create an external table on top of it. Queries can be used on external table but not DML operations. More information here : https://oracle-base.com/articles/9i/external-tables-9i
I just found out last week that there is one more solution and probably the best!
The solution is written here-part-1 and here-part-2 and if you follow the steps exactly, it will work (I implemented it).
Anyway, I will summarize the main idea and steps.
We can use a variable into a package. There is a code (see code at the end) that reads a column from the given file. Making a for statement in the package, will help us read every row, by changing the value of "CRFILE_FIRST_ROW" variable from the code below, with a sequential number starting with 1 (
So, everything is easy as above. Besides the "CRFILE_FIRST_ROW", there are more variable that can be changed, like: CRFILE_FORMAT=D (format:decimal), CRFILE_SEP_FIELD=0x0009 (hexadecimal fileformat) and so on.
Also, as you can see in the original posts (above links), you can generate your view code; you don't need to copy paste from below.
View code:
select TES.C1 C1
from location_of_file/objects_to_import.txt TES
/*$$SNPS_START_KEYSNP$CRDWG_TABLESNP$CRTABLE_NAME=TESTSNP$CRLOAD_FILE=location_of_file/objects_to_import.txtSNP$CRFILE_FORMAT=DSNP$CRFILE_SEP_FIELD=0x0009SNP$CRFILE_SEP_LINE=0x000ASNP$CRFILE_FIRST_ROW=#UTILS.IMPORT_OBJ_READ_INCRSNP$CRFILE_ENC_FIELD=SNP$CRFILE_DEC_SEP=SNP$CRSNP$CRDWG_COLSNP$CRCOL_NAME=C1SNP$CRTYPE_NAME=STRINGSNP$CRORDER=1SNP$CRLENGTH=50SNP$CRPRECISION=50SNP$CRACTION_ON_ERROR=NULLSNP$CR$$SNPS_END_KEY*/
Currently had a request to automatically add data in a form window into two tables at once. I was able to accomplish this with simple insert functions as processes, but for the life of me I can not figure out how to get the attached file in the file browse to attach to the other table using am insert function. The blob column always shows up as [unsupported datatype].
Here's my current insert code, let me know I'm being an idiot and missing something simple.
insert into ATTACHMENTS_AVAIL ("ADDED_FILE", "MIMETYPE", "FILENAME", "CONTRACTOR_ID", "DATE_ADDED", "TYPE")
values
(:P159_RESUME,
:P159_MIMETYPE,
:P159_FILENAME,
:P159_CONTRACTOR_ID,
sysdate,
'Resume');
ADDED_FILE is the blob column and :P159_RESUME is the file browse form.
Thanks again!
Inserting the BLOB
Your insert statement isn't getting the BLOB data, just the APEX file ID. You need to do something more like this:
insert into ATTACHMENTS_AVAIL ("ADDED_FILE", "MIMETYPE", "FILENAME", "CONTRACTOR_ID", "DATE_ADDED", "TYPE")
select blob_content,
:P159_MIMETYPE,
:P159_FILENAME,
:P159_CONTRACTOR_ID,
sysdate,
'Resume'
from apex_application_files where name = :P159_RESUME;
In fact, apex_application_files has other columns to tell you the mime type etc.
Viewing the BLOB
You are trying to view the BLOB data in APEX's SQL Workshop. That can't display BLOBs (it just shows "[unsupported datatype]" as you found), but that doesn't mean the BLOB data is invalid. A BLOB can contain anything - music in MP3 format, picture in JPEG, video in MP4, Microsoft Word document, etc. etc. No tool can "display" all of these.
If you create a new page with a report on it to show the data, you can set the BLOB column's Type to Display Image if the BLOB always contains an image, or to Download BLOB if it may contain non-image data.
I have a requirement to insert bulk data into an Oracle database from a CSV file. Now table columns specs match those of the CSV file's header with the exception of three additional fields in database:
A Primary Key field (for which a simple SEQUENCE.NEXTVAL is called)
A field for the name of the CSV file
A field for the last modified date+time of the file
The following stack question address an extra column issue, but the solution is pretty easy because it used Oracle sysdate which is internally available. I need to pass a parameter from either batch script/shell script.
Insert actual date time in a row with SQL*loader
Can PARFILE help here somehow?
My other alternative would be to do the whole task in two steps by writing a small java code:
Use SQL Loader for bulk upload leaving out data for the filename and
modified time
And then run a separate update statement to populate the newly
created rows
But I'm looking for something which will get the job done in one shot. Any advice??
I'm affraid it's not possible with sqlldr alone.
There is no tools for this in sqlldr.
You'd need some sort of script or a program to dynamically create a .ctl file for each load.
Here is a bash script to help you get started:
#!/bin/bash -xv
readonly MY_FILENAME=$1
readonly DB_BUF_TABLE=$2
readonly SQLLDR_CTL="LOAD DATA
CHARACTERSET UTF8
APPEND INTO TABLE $DB_BUF_TABLE
FIELDS TERMINATED BY ';'(
filename \"$MY_FILE_NAME\",
col_foo,
col_bar
)"
echo "$SQLLDR_CTL" > "loader.ctl"
sqlldr control=loader.ctl parfile=loader.par data="$MY_FILENAME"
sqlldrReturnValue=$?
You'd needsome locking with this.. or path separation for concurrent loads to be sure sqlldr starts with proper ctl file
Does anyone know how to export results from more than one query into different sheets of the same Excel workbook using the report automation in TOAD for data analyst?
Thank you
I'm not sure that you can do that with Toad automatically but there is a little trick that you can do with Excel.
Write first query and execute it in Toad, after that right click on query result data grid and choose "Export dataset...", under Excel format choose "Excel instance" and click OK. It will open Excel and add one sheet with data from your query.
Repeat same process for second query and it will add another sheet to same document and fill with data from second query.
After you executed all queries and added it to Excel save excel document.
If you want to do that completely automatically, there is another solution which you can use to create single Excel document with multiple sheets which are loaded with data from different queries. Purchase the third party PL/SQL package, ORA_EXCEL.
Here is example how to do that:
BEGIN
ORA_EXCEL.new_document;
ORA_EXCEL.add_sheet('Employees');
ORA_EXCEL.query_to_sheet('select * from employees');
ORA_EXCEL.add_sheet('Departments');
ORA_EXCEL.query_to_sheet('select * from departments', FALSE);
ORA_EXCEL.add_sheet('Locations');
ORA_EXCEL.query_to_sheet('select * from locations');
-- EXPORT_DIR is an Oracle directory with at least
-- write permission
ORA_EXCEL.save_to_file('EXPORT_DIR', 'example.xlsx');
END;
It can generate Excel file and store it to Oracle directory, or you can get generated Excel file into PL/SQL BLOB variable so you can store it to table or create your own process to distribute file like sending it to email.
More details you can find on products documentation/examples page: http://www.oraexcel.com/examples
Cheers
I don't think this functionality exists in TOAD.
The usual solution for exporting straight from PL/SQL to Excel - Tom Kyte's OWA_SYLK wrapper for the SYLK api - only works with single worksheets. There are a couple of alternative solutions.
Sanjeev Sapre has his get_xl_xml package. As the name suggests it uses XML to undertake the transformation. Find out more.
Jason Bennett has written a PL/SQL object which generates an Excel XML document. Find out more.
You no longer need to write code to output data for multiple sheets.
As long as your SQL has queries identified clearly (with semicolons), TDA or now TDP will automatically dump data for different SQLs in different worksheets.
I have Toad for Data Analyst 2.6. I use the keyword GO between queries.
Select * from tableA;
GO
Select * from tableB;
This creates two tabs in Excel.