技術評論社

第185回 MySQL Workbenchを 使ってSELECTした 結果を SQLに 変換する

皆さんは、異なるDB間でのデータコピーを行う際にどういう方法を使うでしょうか？ まるっと全部コピーするのであれば第127回 CLONEプラグインを導入しようで紹介したcloneプラグインを使ったり、レプリケーションを使ったりします。またバックアップを ...
dbta

Relational Closure Can Turn Any SQL Select Into a Mosaic

Inside a relational database management system, the princi­pal persisted data structure is considered a logical relation. Operations performed against that data within the RDBMS result in a logical ...
Simon Fraser University

Query Window Menus

The SQL Query Window has File, Tools, View, and Profile pull-down menus (PMENUs). If your monitor supports the use of a mouse, you can also display the most frequently used Tools and View items from ...
CCM

How to avoid duplicate records in SQL: select query

Do you want to find out how to avoid duplicates in the results of a SQL SELECT query? This article will show you how. Simply use the DISTINCT clause and between the SELECT clause and the fields.