Well, if you happen to be using Sql Server you can do that sort of thing in T-Sql. In Oracle, you can also accomplish the same thing using pl/sql. Either way i'd do it in a stored ...

「WHEREを書いたのに期待通りに絞れない」「NULL判定でハマった」「とりあえず先頭10件だけ見たい」――現場では“いますぐ答え”が欲しい瞬間が何度もあります。 DBエンジニアとして私も、正しく“選び出す（SELECT）”だけでトラブルの半分は解決できる ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

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 ...

In Version 6, the SAS System's SQL procedure enabled you to retrieve and update data from DBMS tables and views. You could read and display DBMS data by specifying a ...

You can't use wildcards in statements like you want. The easiest way for you to do what you want is to just grant the user the db_datareader role and make sure they're not part of a group with the ...

Suppose you want to display data contained in an array or collection in a table-like format, i.e., in rows and columns. You want to be able to choose which attributes to display. In addition, you want ...

What’s your average success rate of getting a SQL statement right on the first try? In best case, you botched a simple statement without side effects and just have to try again with correct syntax or ...