Felypp Oliveira questions

Felypp Oliveira answers

• Retrieve last non-null record of every column for each record_id in MySQL
• SQL - WHERE Condition on SUM()
• Accessing a Javascript variable inside an HTML file
• Group consecutive ranges
• MySQL REPLACE affects 0 rows but WHERE ... LIKE returns 90
• Why isn't it possible to use prepared statements (based on ALTER TABLE) to set default values of MySQL fields from PHP?