The ALTER TABLE.. ADD COLUMN statement adds a column to an existing table. This operation is online in TiDB, which means that neither reads or writes to the table are blocked by adding a column.

SQL has become the standard language for interacting with relational databases. An SQL database uses tables to store and manage structured data with a focus on data integrity and relationships. MySQL, ...

JSON has stolen some of XML's thunder with features such as human and machine readability, a lightweight, compact text structure and support for many software and hardware platforms. JSON (JavaScript ...

JSON has stolen some of XML's thunder with features such as human and machine readability, a lightweight, compact text structure and support for many software and hardware platforms. JSON (JavaScript ...

Welcome to our comprehensive project designed to guide you through the exciting world of SQL learning! Whether you're a beginner eager to explore the foundations of querying databases or a data ...