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--- docs:mysql:alter_table [2007/03/21 01:16] – billh
+++ docs:mysql:alter_table [2008/08/03 00:25] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ====== ALTER TABLE ======
   * http://dev.mysql.com/doc/refman/4.1/en/alter-table.html
+===== Standard Syntax =====
+<code sql>
+ALTER TABLE tablename
+(
+  ADD|DROP  column  datatype  [NULL|NOT NULL]  [CONSTRAINTS],
+  ADD|DROP  column  datatype  [NULL|NOT NULL]  [CONSTRAINTS],
+  ...
+);
+</code>
+===== Adding a Primary Key =====
+  * alter table parcels add primary key (`id`);
+===== Adding an Index/Key =====
+  * alter table parcels add key (`area`);
+  * alter table parcels add index (`owner`);
 ===== Converting to a Character Set =====
@@ Line 6: / Line 23: @@
   * alter table mytable CONVERT TO CHARACTER SET latin1 [COLLATE collation_name];
+===== Converting to a different engine =====
+  * alter table mytable type = INNODB;
+  * alter table mytable type = MYISAM;
+===== Renaming a Column =====
+  * alter table weeks change status_id status_type_id int(2) not null;
+    * table name: weeks
+    * old column name: status_id
+    * new column name: status_type_id