Spatial SQL is an extension of the standard SQL (Structured Query Language) that allows users to manage and query spatial data. This type of data includes information about the location and shape of geographic features, such as points, lines, and polygons. Spatial SQL enables users to perform complex queries that involve geographic calculations, such as finding distances, intersections, and areas. By using Spatial SQL, developers can work with databases that store geographic information, like PostGIS for PostgreSQL or Oracle Spatial. These tools help in applications like mapping, urban planning, and environmental monitoring, making it easier to analyze spatial relationships and patterns in data.