By George Reese
That can assist you be extra effective on your paintings, this useful pocket reference grants immediate reminders on the right way to use very important MySQL capabilities, particularly at the side of key elements of the LAMP open resource infrastructure. This robust database approach is so wealthy in beneficial properties that no administrator or programmer can remain conversant in them all. MySQL Pocket Reference is a perfect on-the-job significant other, good geared up that can assist you locate and adapt the statements you wish -- quickly.
Updated for the newest types of this well known database, this variation covers many advanced positive aspects which have been extra to MySQL 5.0 and 5.1, together with a piece devoted to saved approaches and triggers. After a short creation on install and preliminary setup, the booklet explains:
How to configure MySQL, reminiscent of surroundings the foundation password
MySQL info forms, together with numerics, strings, dates, and intricate types
SQL syntax, instructions, facts forms, operators, and functions
Arithmetic, comparability and logical operators
Aggregate and basic functions
Stored strategies and triggers, together with method definition, approach calls, process administration, cursors, and triggers
You don't have time to forestall and thumb via an exhaustive reference while you're demanding at paintings. This transportable and cheap consultant is sufficiently small to slot into your pocket, and offers you a handy reference so you might seek advice at any place. should you succeed in a sticking element and want to get to an answer quick, the MySQL Pocket Reference is the e-book you must have.
Read or Download MySQL Pocket Reference: SQL Functions and Utilities (2nd Edition) PDF
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Extra info for MySQL Pocket Reference: SQL Functions and Utilities (2nd Edition)
When you modify any value in a row with a TIMESTAMP column, the first TIMESTAMP column will be automatically updated with the current date and time. 1. YEAR YEAR[(size)] Format YYYY (2001) Storage 1 byte Description Stores a year of the Gregorian calendar. The size parameter enables you to store dates using 2-digit years or 4-digit years. The range for a YEAR(4) is 1900 to 2155; the range for a YEAR(2) is 1970-2069. The default size is YEAR(4). Complex Types MySQL’s complex data types ENUM and SET are just special string types.
If you specified TYPE=BDB on a Mac OS X system, MySQL will instead create the table as a MyISAM table (the default table type). Supported table types are described later. MAX_ROWS = rowcount The maximum number of rows you intend to store in the table. MIN_ROWS = rowcount The minimum number of rows you intend to store in the table. PACK_KEYS = 0 or 1 For MyISAM tables only. This option provides a performance booster for read-heavy tables. Set to 1, this option causes smaller keys to be created and thus slows down writes while speeding up reads.
If TEMPORARY is specified and the table exists but IF NOT EXISTS is not specified, the existing table will simply be invisible to this client for the duration of the new temporary table’s life. The CREATE clause can either define the structure of a specific column or define a metastructure for the column. A CREATE clause that defines a column consists of the name of the new table followed by any number of field definitions. The syntax of a field definition is: column type [NOT NULL | NULL] [DEFAULT value] [AUTO_INCREMENT] [PRIMARY KEY] [reference] The modifiers in this syntax are: AUTO_INCREMENT Indicates that the column should be automatically incremented using the current greatest value for that column.