Categories / sql
Why does my SQL scalar function sometimes throws "Subquery returned more than 1 value. This is not permitted..."?
Adding a Fixed Value to a Column While Loading Data from a CSV File in MySQL
SQL Techniques for Populating Columns with Previous Values Partitioned by Account Number
Cluster Records by Time Using SQL: Efficient Data Analysis with Common Table Expressions and Window Functions
Alternative Approaches to Pivot Tables in Oracle SQL Developer
How to Calculate Historical Hourly Rates Using SQL Window Functions
Understanding Oracle Regular Expressions for Pattern Matching with Regex Concepts and Functions Tutorial
Optimizing an UPDATE Statement for Matching Columns Across Two Tables
Parsing VARCHAR Rows by Delimiters and Updating Tables with Oracle MERGE Statements.
Understanding Online Indexes in SQL Server and Azure Databases: Best Practices and Conditional Compilation