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Delta load logic using oracle merge/delete sql statement

user12251389Jan 19 2021 — edited Oct 20 2021

I have table TEST_RUA where i am importing data daily. I am using Truncate and Insert logic for this table. Now i have another table TEST_RUA_MER same like table TEST_RUA where i want to apply Delta load logic. There is always unique combination of column values ID_LL, ID_UU, TKR in both table.
This post has been answered by Frank Kulash on Jan 19 2021
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Comments

Regarding writing to Oracle, start by reading the https://oracle.github.io/node-oracledb/doc/api.html
Consuming "a web service" can be done with the http module which is part of Node.js. Check out the manual and doc like https://nodejs.org/en/knowledge/HTTP/clients/how-to-create-a-HTTP-request/

Billy Verreynne

Why nodejs and not use only PL/SQL? Far fewer moving parts.

Arif2018

i am not sure on how pl/sql works , Appreciate if you can post some links. All i want is to read the url and insert data into Oracle table.

Billy Verreynne

Oracle has the UTL_HTTP package API and the HttpUriType advance datatype (oo class).
Sample code provided in manual and you can also look at https://community.oracle.com/tech/developers/discussion/comment/10450611/#Comment_10450611 and as for the oo class:

SQL> select httpuritype( 'http://google.com' ).getClob() as "HTML" from dual;

HTML
-------------------------------------------------------------------------------
<!doctype html><html itemscope="" itemtype="http://schema.org/WebPage" lang="en
-ZA"><head><meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
..snipped..

In PL/SQL use:

clobVariable := new HttpUriType(urlVariable).getClob();
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Post Details

Added on Jan 19 2021
#delete, #insert, #oracle, #sql, #update
23 comments
2,453 views
4 mentions