This topic answers common questions about vector search and how to resolve them.
Which mode supports vector search?
Vector search is supported in MySQL-compatible mode. Oracle-compatible mode is not supported yet.
Must every row in a vector column have the same dimension?
Yes. You must specify the dimension when you define the vector column, and dimension is validated when you insert data.
Is there a limit on how many rows of vector data I can write?
There is no fixed limit; it depends on tenant memory.
How do I create an index for vectors with more than 4096 dimensions?
Reduce dimensionality first (for example, by compression or projection) so that vectors have at most 4096 dimensions, then create the index.