This is personal study note Copyright and original reference: https://www.youtube.com/watch?v=oIYoS--DtbI&list=PLuHgQVnccGMDF6rHsY9qMuJMd295Yk4sa ================================================================================ Split table, based on column or row ================================================================================ If description is large data, you can split it into other table This is also called "sharding" ================================================================================ Split table, based on row If there are many authors, split authors 1-1000: topic_1000 table 1001-2000: topic_2000 table