Write SQL SELECT queries that actually perform. Most beginners use SELECT * Then wonder why their queries are slow. Here’s the real issue: SELECT * loads every column into memory. Your database processes data you don’t need. Result? Slower queries and higher resource usage. Write performance-focused SQL instead: • Select only required columns • Use WHERE to filter rows early • Reduce unnecessary data processing The result: Faster SQL queries Lower memory usage Better system performance This one
0:47
Write SQL SELECT queries that actually perform. Most beginners use SELECT * Then wonder why their queries are slow. Here’s the real issue: SELECT * loads every column into memory. Your database processes data you don’t need. Result? Slower queries and higher resource usage. Write performance-focused SQL instead: • Select only required columns • Use WHERE to filter rows early • Reduce unnecessary data processing The result: Faster SQL queries Lower memory usage Better system performance This one
77 views4 months ago
FacebookManish Sharma
how to use SQL with RMAN in Oracle Database by Manish Sharma
2:37
how to use SQL with RMAN in Oracle Database by Manish Sharma
4.7K viewsMar 11, 2022
YouTubeManish Sharma
PL/SQL tutorial | PL/SQL tutorial for beginners | PL/SQL tutorial in hindi | Oracle PL/SQL tutorial
1:19:24
PL/SQL tutorial | PL/SQL tutorial for beginners | PL/SQL tutorial in hindi | Oracle PL/SQL tutorial
253K viewsDec 21, 2020
YouTubeBang On Theory
PL/SQL tutorial 87: Bulk Collect Into with Execute Immediate by Manish Sharma
9:39
PL/SQL tutorial 87: Bulk Collect Into with Execute Immediate by Manish Sharma
19.4K viewsJun 20, 2018
YouTubeManish Sharma
WHY LEARN SQL [in 2 minutes for beginners] By Manish Sharma
2:25
WHY LEARN SQL [in 2 minutes for beginners] By Manish Sharma
66.9K viewsAug 4, 2019
YouTubeManish Sharma
PL/SQL tutorial 54: PL/SQL VARRAYs in Oracle Database by Manish Sharma
5:59
PL/SQL tutorial 54: PL/SQL VARRAYs in Oracle Database by Manish Sharma
52.6K viewsApr 19, 2017
YouTubeManish Sharma
PL/SQL tutorial 15: DML Trigger With Before Insert, Update and Delete DML Examples
9:17
PL/SQL tutorial 15: DML Trigger With Before Insert, Update and Delete DML Examples
292.2K viewsNov 8, 2015
YouTubeManish Sharma
6:48
PL/SQL tutorial 33: Table Based Record Datatype In Oracle Database by Manish Sharma
94.2K viewsJun 14, 2016
YouTubeManish Sharma
4:58
PL/SQL tutorial 36: Cursor Based Record Datatype variables part 2 By Manish Sharma
53.1K viewsJul 12, 2016
YouTubeManish Sharma
7:51
PL/SQL tutorial 88: PL/SQL Block using Execute Immediate of Dynamic SQL by Manish Sharma
21.1K viewsJul 20, 2018
YouTubeManish Sharma
3:24
PL/SQL tutorial 32: Introduction To PL/SQL Record Datatype In Oracle Database By Manish Sharma
95.5K viewsJun 6, 2016
YouTubeManish Sharma
5:21
PL/SQL tutorial 60: Collection Method EXISTS in Oracle Database by Manish Sharma
25.7K viewsJun 16, 2017
YouTubeManish Sharma
5:39
PL/SQL tutorial 37: User Defined Record Datatype variable By Manish Sharma
61.3K viewsJul 23, 2016
YouTubeManish Sharma
7:54
PL/SQL tutorial 52: How To Create Nested table as Database Object by Manish Sharma
71.2K viewsMar 21, 2017
YouTubeManish Sharma
6:29
PL/SQL tutorial 83: Create Table with Execute Immediate of Native Dynamic SQL
21.4K viewsApr 24, 2018
YouTubeManish Sharma
12:29
PL/SQL tutorial 86: Multiple Bind Variable with Execute Immediate of Dynamic SQL By Manish Sharma
22.2K viewsJun 3, 2018
YouTubeManish Sharma
0:54
SQL in 60 Seconds 🕙: Beginners Crash Course!
6.3K viewsJul 8, 2024
YouTubeManish Sharma
4:31
PL/SQL tutorial 80: Introduction to Native Dynamic SQL by Manish Sharma
39.3K viewsMar 7, 2018
YouTubeManish Sharma
8:45
PL/SQL tutorial 85: Execute Immediate with Using Clause in Native Dynamic SQL by Manish Sharma
18.9K viewsMay 19, 2018
YouTubeManish Sharma
5:55
PL/SQL tutorial 44 : Introduction to PL/SQL Packages in Oracle Database By Manish Sharma
110.7K viewsOct 10, 2016
YouTubeManish Sharma
7:22
PL/SQL tutorial 45: How to Create PL/SQL Package in Oracle Database by Manish Sharma
114.2K viewsDec 2, 2016
YouTubeManish Sharma
6:15
PL/SQL tutorial 39: How To Create PL/SQL Functions in Oracle Database By Manish Sharma
150.3K viewsAug 17, 2016
YouTubeManish Sharma
4:55
PL/SQL tutorial 10: PL/SQL IF THEN ELSIF Statement in Oracle Database by Manish Sharma
150.3K viewsSep 9, 2015
YouTubeManish Sharma
3:29
PL/SQL tutorial 50: Introduction to PL/SQL Collections in Oracle Database By Manish Sharma
86.5K viewsFeb 21, 2017
YouTubeManish Sharma
0:45
Master SQL Fast 15 Day Step by Step ROADMAP #sql #tutorial #skills
10.2K views2 months ago
YouTubeManish Sharma
8:51
SQL tutorial 28: Left Outer Join By Manish Sharma / RebellionRider
71K viewsJul 10, 2014
YouTubeManish Sharma
5:31
PL/SQL tutorial 71: PL/SQL SYS_RefCursor in Oracle Database by Manish Sharma
30.4K viewsOct 26, 2017
YouTubeManish Sharma
3:41
PL/SQL tutorial 46: Introduction to PL/SQL exception Handling in Oracle Database By Manish Sharma
93.9K viewsDec 24, 2016
YouTubeManish Sharma
12:07
How to connect with Pluggable Database using SQL Developer by Manish Sharma
25.8K viewsOct 11, 2018
YouTubeManish Sharma
6:30
PL/SQL tutorial 41: How To Create PL/SQL Stored Procedure Without Parameters in Oracle Database
120.4K viewsAug 31, 2016
YouTubeManish Sharma
See more
Static thumbnail place holder