https://dev.classmethod.jp/articles/amazon-dynamodb-import-amazon-s3-data-into-a-new-table/https://docs.aws.amazon.com/ja_jp/amazondynamodb/latest/developerguide/S3DataImport.HowItWorks.html During the Amazon S3 import process, DynamoDB cr…

いずれのDBも内部結合への自動変換をサポートしている模様 MySQL (8.0.29) drop table tab1;create table tab1( col1 bigint primary key ,col2 bigint ); drop table tab2;create table tab2( col1 bigint primary key ,col2 bigint ); drop procedure proc…