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MySQL よく使うコマンド

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Last updated at Posted at 2022-05-23

MySQL

1.データベースへのログイン

 mysql -u ユーザー名 -p パスワード -d データベース名

(例)

項目
ユーザー root
パスワード  1111
DB名  sample
 mysql -u root -p 1111 -d sample

2.DBの消去(tuencateで行うことで、deleteよりも処理が早い)

※コンソール上で行う

コンソール
  # schema_migrations以外のテーブル内の全データを削除
       ActiveRecord::Base.connection.tables.each do |table|
         if table != "schema_migrations"
           ActiveRecord::Base.connection.execute("TURNCATE TABLE #{table};")
         end
       end  
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