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SQL


Introduction

 Getting started with SQL

Recent Contributions

dmfay created Materialized Views
dmfay created PostgreSQL example
Denish Parvadia created Convert DateTime
Denish Parvadia created Convert Date Formate
dasblinkenlight created Correlated Subqueries
summary requested topics need improvement proposed changes activity

20 Requested Topics

dismissed handled newest top
15
SQL CURSOR Cursor is used in databases to manipulate individualy the rows returned by a querie. The rows are processed sequentially, allowing read the data and take some action prior to read next value. requested by Ricardo Pontual 2,166 3 comments
12
Isolation Levels requested by Braydie 88
11
Three Valued Logic (3VL) Explanation with examples of 3VL used by SQL requested by Cristian Abelleira 282 4 comments
7
Transaction Management Using Logical Units of Work and the COMMIT and ROLLBACK commands requested by Bernard Dy 1,726 1 comment
6
OLAP OLAP operations such as CUBE, ROLL UP, Drill Down, Slice and Dice, Pivot. requested by Goku 5 1 comment
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5 Need Improvement

worst popular recent
DELETE missing detail
GROUP BY missing detail
Sequence missing detail
Rebuild index unclear

0 Proposed Changes

rejected approved need review

No proposed changes.

Changes which need review will be displayed here.

1,082 Actions

onedaywhen edited Selecting with table alias (view change) Dec 23 '16 at 18:04
v́̎̈́̀̽̏̿̏͋ edited Single character match (view change) Dec 23 '16 at 7:42
dmfay created Materialized Views (view change) Dec 23 '16 at 4:55
dmfay created PostgreSQL example (view change) Dec 23 '16 at 4:55
Denish Parvadia created Convert DateTime (view change) Dec 22 '16 at 8:48
View more →