artembrdn / oracle-utils

📝 Algorithms, useful functions and procedures implemented in PLSQL in Oracle Database

Oracle PLSQL algorithms, useful functions and procedures

This repository contains algorithms, useful functions and procedures based on PLSQL and Java in Oracle Database.

GEO

• Functions
  • DISTANCE BETWEEN - returns the ditance between two coordinates in meters, taking into account the radius of the Earth.

STRING / CLOB

• Functions

  • SPLIT - splits the input string (varchar2 or clob) by pattern and outputs each substring in a separate line. Optimized for CLOB type inputs.
  • CLOB REPLACE - returns new clob with every occurrence of search_string replaced with replacement_string.
  • IS NUMBER - returns 1 if the string consists of only digits, 0 if string is null or string length = 0.
  • GET DATE - returns valid date or NULL, tries to convert a string to a date based on an array of masks.

• Procedures

  • CLOB REPLACE - returns new clob with every occurrence of search_string replaced with replacement_string.

UTILS

• FILE SYSTEM

  • READ DIRECTORY - JAVA procedure reads the list of files in the directory and puts it in a temporary table.

• BACKUP

  • DB SOURCE - a simple backup of dba_source to the dump files and a simple reading of these files on the required date.

SQL

• DELETE
  • DELETE DUPLICATES - removing duplicates from a table without temporary tables.
  • DELETE HISTORY - removing historical data from a table without temporary tables.