Help- A simple question about SQL# Database - 数据库
t*n
1 楼
Could anyone help me for the following question?
There is a table with gene_ids (‘gid’) and clone_ids (‘cid’). Each gene
only resides on a single clone and each clone may contain multiple genes. How
do you find how many genes are on each and every clone? Please provide the
SQL.
Many thanks!
There is a table with gene_ids (‘gid’) and clone_ids (‘cid’). Each gene
only resides on a single clone and each clone may contain multiple genes. How
do you find how many genes are on each and every clone? Please provide the
SQL.
Many thanks!
