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289 results
Procedures vs Functions: A First Look at PL/SQL - part 99 of Oracle SQL Zero to Hero: real SQL, explained line by line, in simple ...
10 views
4d ago
🏦 **Build a Banking System Using Oracle PL/SQL | Money Withdrawal Procedure Explained in Bangla** Want to learn how Oracle PL ...
75 views
3d ago
Boss puzzle: Oracle ADD_MONTHS(DATE '2026-02-28', 1) versus PostgreSQL DATE '2026-02-28' + INTERVAL '1 month'.
35 views
For each row n and column k, print a hash when BITAND(n, k) = k. The cells that print are exactly the odd numbers of Pascal's ...
1 view
22 min ago
Turn rows into columns and back in Oracle: PIVOT with SUM, the old CASE approach, the hidden column trap that gives too many ...
16 views
6d ago
Looking to master PLSQL? Here's the must-read book that'll kickstart your journey! Don't miss this solid recommendation!
15 views
1d ago
Subscribe: https://www.youtube.com/@PLSQLLabNotes?sub_confirmation=1 #Shorts #SQL #Oracle #PLSQL.
26 views
5d ago
10, 20, 20, 20, 30 with ORDER BY n DESC FETCH FIRST 2 ROWS WITH TIES returns 4 rows: 30 and all three 20s. Oracle and ...
8 views
2d ago
PLSQL Lab Notes is a channel for real Oracle SQL, tested on a real database. Quick SQL puzzles (pick A, B or C before the timer ...
11 views
57 views
Boss puzzle: what do these two ADD_MONTHS calls return? ADD_MONTHS(DATE '2026-01-31', 1) and ADD_MONTHS(DATE ...
43 views
Adding one month to January 31 with INTERVAL. Oracle raises an error, because it builds February 31, which does not exist.
31 views
The sieve of Eratosthenes: cross out the multiples of 2, 3, 5 and 7, set 1 aside, and what remains is prime. There are 25 primes ...
2 views
8 min ago
In Oracle, MOD keeps the sign of the first number: MOD(-7, 3) returns -1. Answer C. Got it right? Follow for harder ones. Subscribe: ...
28 views
Learn an efficient method to determine the latest date from multiple date fields in PL/SQL and identify which field it belongs to for ...
0 views
Boss puzzle: add up the odd numbers from 1 to 99 with CONNECT BY LEVEL and MOD. There are 50 odd numbers, and the sum ...
50 views
Four viewers. Two swiped away, so their watch time is NULL. How many viewers did not watch exactly 30 seconds? Answer B: 1.
23 views
Pascal's triangle built with a recursive SQL query. Row 0 is 1, and each number is the sum of the two above it. Row 4 is 1, 4, 6, 4, ...
44 views
You insert a row, create another table, then roll back. In Oracle and MySQL a CREATE TABLE commits the open transaction first, ...
12 views
Why Oracle ignores an index, with real EXPLAIN PLAN output: comparing a VARCHAR2 column to a number (implicit conversion) ...
