SQL_Statement

結構型資料的搜索述句

Start SQL Server

mysql -u Account_Name -h IP -p port

/r

/q

• Brew install MySQL

  https://ken.io/note/macos-mysql8-install-config-tutorial

      List of all MySQL commands:
    Note that all text commands must be first on line and end with ';'
    ?         (\?) Synonym for `help'.
    clear     (\c) Clear the current input statement.
    connect   (\r) Reconnect to the server. Optional arguments are db and host.
    delimiter (\d) Set statement delimiter.
    edit      (\e) Edit command with $EDITOR.
    ego       (\G) Send command to mysql server, display result vertically.
    exit      (\q) Exit mysql. Same as quit.
    go        (\g) Send command to mysql server.
    help      (\h) Display this help.
    nopager   (\n) Disable pager, print to stdout.
    notee     (\t) Don't write into outfile.
    pager     (\P) Set PAGER [to_pager]. Print the query results via PAGER.
    print     (\p) Print current command.
    prompt    (\R) Change your mysql prompt.
    quit      (\q) Quit mysql.
    rehash    (\#) Rebuild completion hash.
    source    (\.) Execute an SQL script file. Takes a file name as an argument.
    status    (\s) Get status information from the server.
    system    (\!) Execute a system shell command.
    tee       (\T) Set outfile [to_outfile]. Append everything into given outfile.
    use       (\u) Use another database. Takes database name as argument.
    charset   (\C) Switch to another charset. Might be needed for processing binlog with multi-byte charsets.
    warnings  (\W) Show warnings after every statement.
    nowarning (\w) Don't show warnings after every statement.
    resetconnection(\x) Clean session context.
  
    For server side help, type 'help contents'
  

• connect 連線資料庫指令

For server side help, type 'help contents'

mysql> \r
Connection id:    15
Current database: *** NONE ***

• add column to old table = alter...add... 追加欄位

   alter table schema_name.table_name add column_a int not null;
  

• read = select 讀出

   select * from schema_name.table_name;
  

• write = insert 寫入

   insert into table_name value(param1, param2, null, param...)  
  

• rename column 更名（重新命名）

    alter table table_name change old_column_name new_column_name dataType;