Paul Maxwell questions

Paul Maxwell answers

• How to combine rows in Amazon Redshift [duplicate]
• SQL "between" not inclusive
• Redshift PostgreSQL Distinct ON Operator
• SQL Server JSON_VALUE syntax
• SELECT sub-query with WHERE condition in Yii2 find() / QueryBuilder
• what does this mean "order by NULL"
• MySql IN clauses, trying to match IN list of tuples
• Make an alias column from 2 different tables in MySQL
• Use TO_DATE in SQL Server 2012
• LEFT JOIN returns same result as INNER JOIN