{"id":1252,"date":"2013-04-30T06:54:04","date_gmt":"2013-04-30T06:54:04","guid":{"rendered":"http:\/\/brain.payzip.co.kr\/?p=1252"},"modified":"2013-04-30T06:54:04","modified_gmt":"2013-04-30T06:54:04","slug":"mysql-alter-table-%ea%b5%ac%eb%ac%b8-%ec%a0%95%eb%a6%ac","status":"publish","type":"post","link":"https:\/\/blog.goorigo.com\/?p=1252","title":{"rendered":"MySQL ALTER TABLE \uad6c\ubb38 \uc815\ub9ac"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p><strong>\uceec\ub7fc \ucd94\uac00<br \/>\n<\/strong>ALTER TABLE &lt;\ud14c\uc774\ube14\uba85&gt;\u00a0<strong>ADD<\/strong>\u00a0&lt;\uceec\ub7fc&gt; &lt;\ub370\uc774\ud130 \ud0c0\uc785&gt;\u00a0<strong>AFTER<\/strong>\u00a0&lt;\ud14c\uc774\ube0c\uba85&gt;<\/p>\n<p><strong>\uceec\ub7fc\uba85 \ubcc0\uacbd, \ud0c0\uc785 \ubcc0\uacbd<br \/>\n<\/strong>ALTER TABLE &lt;\ud14c\uc774\ube14\uba85&gt;\u00a0<strong>CHANGE<\/strong>\u00a0&lt;OLD \uceec\ub7fc&gt; &lt;NEW \uceec\ub7fc&gt; &lt;\ub370\uc774\ud130 \ud0c0\uc785&gt;<\/p>\n<p><strong>\uceec\ub7fc \uc0ad\uc81c<\/strong><br \/>\nALTER TABLE &lt;\ud14c\uc774<span style=\"font-size: small;\">\ube14<\/span>\uba85&gt;\u00a0<strong>DROP<\/strong>\u00a0&lt;\uceec\ub7fc\uba85&gt;<\/p>\n<p><strong>\uceec\ub7fc \ud0c0\uc785 \ubcc0\uacbd<br \/>\n<\/strong>ALTER TABLE &lt;\ud14c\uc774\ube14\uba85&gt;\u00a0<strong>MODIFY<\/strong>\u00a0&lt;\uceec\ub7fc\uba85&gt; &lt;\ub370\uc774\ud130 \ud0c0\uc785&gt;<\/p>\n<p>&nbsp;<\/p>\n<div><\/div>\n<p><strong>\ud14c\uc774\ube14\uba85 \uc218\uc815<br \/>\n<\/strong>ALTER TABLE &lt;\ud14c\uc774\ube14\uba85&gt;\u00a0\u00a0<strong>RENAME\u00a0<\/strong>&lt;NEW \ud14c\uc774\ube14\uba85&gt;<\/p>\n<p>&nbsp;<br \/>\n\ucd9c\ucc98 &#8211;\u00a0http:\/\/baljack.tistory.com\/9<br \/>\n=========================================================================================<\/p>\n<div id=\"post-view30116416169\">\n<p>\ud14c\uc2a4\ud2b8 \ud14c\uc774\ube14 \uc0dd\uc131<\/p>\n<p>DROP TABLE test;<br \/>\nCREATE TABLE test (<br \/>\nid\u00a0\u00a0INTEGER,<br \/>\nage\u00a0\u00a0INTEGER,<br \/>\nname\u00a0\u00a0VARCHAR(50),<br \/>\njumin\u00a0VARCHAR(15),<br \/>\nPRIMARY KEY(id),<br \/>\nUNIQUE(age),<br \/>\nINDEX(name),<br \/>\nKEY(jumin),<br \/>\nINDEX(name, jumin)<br \/>\n);<\/p>\n<p>&#8211; INDEX\ub97c KEY\ub85c \ubc14\uafd4\ub3c4 \ub41c\ub2e4.<br \/>\n&#8211; INDEX(name, jumin) \uacfc INDEX(name), INDEX(jumin) \uc740 \ub2e4\ub984<\/p>\n<p>&#8211; [] \uc5d0 \ub4e4\uc5b4\uac00 \uc788\ub294 \ub0b4\uc6a9\uc740 \uc0dd\ub7b5 \uac00\ub2a5<\/p>\n<p>\u25b6 \ud14c\uc774\ube14 \uc18d\uc131 \ubcc0\uacbd<br \/>\n1. \ud544\ub4dc \ucd94\uac00<br \/>\n&#8211; ATLER TABLE \ud14c\uc774\ube14\uba85 ADD [COLUMN] \ucd94\uac00\ud560\ud544\ub4dc\uba85 \ud544\ub4dc\ud0c0\uc785 [FIRST | AFTER \ud544\ub4dc\uba85]<br \/>\n&#8211; ATLER TABLE \ud14c\uc774\ube14\uba85 ADD [COLUMN] (\ucd94\uac00\ud560\ud544\ub4dc\uba85 \ud544\ub4dc\ud0c0\uc785, &#8230;)<\/p>\n<p>&nbsp;<\/p>\n<p>2. \ud544\ub4dc\uba85 \ubc0f \ud0c0\uc785 \ubcc0\uacbd<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 CHANGE [COLUMN] \uae30\uc874\ud544\ub4dc\uba85 \ubcc0\uacbd\ud560\ud544\ub4dc\uba85 \ubcc0\uacbd\ud560\ud544\ub4dc\ud0c0\uc785 [FIRST | AFTER \ud544\ub4dc\uba85]<\/p>\n<p>&nbsp;<\/p>\n<p>3. \ud544\ub4dc \ud0c0\uc785 \ubcc0\uacbd<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 MODIFY [COLUMN] \uae30\uc874\ud544\ub4dc\uba85 \ubcc0\uacbd\ud560\ud544\ub4dc\uba85 [FIRST | AFTER \ud544\ub4dc\uba85]<\/p>\n<p>&nbsp;<\/p>\n<p>4. \ud544\ub4dc \uc0ad\uc81c<br \/>\n&#8211; ATLER TABLE \ud14c\uc774\ube14\uba85 DROP [COLUMN] \uc81c\uac70\ud560\ud544\ub4dc\uba85<\/p>\n<p>&nbsp;<\/p>\n<p>5. \ud544\ub4dc \ub514\ud3f4\ud2b8 \uc815\uc758<br \/>\n&#8211; ATLER TABLE \ud14c\uc774\ube14\uba85 ATLER [COLUMN] \ud544\ub4dc\uba85 {SET DEFAULT &#8216;XXX&#8217; | DROP DEFAULT}<\/p>\n<p>&nbsp;<\/p>\n<p>6. \ud14c\uc774\ube14\uba85 \ubcc0\uacbd<br \/>\n&#8211; ATLER TABLE \ud14c\uc774\ube14\uba85 RENAME \ubcc0\uacbd\ud560\ud14c\uc774\ube14\uba85<\/p>\n<p>&nbsp;<\/p>\n<p>7. COMMENT \ucd94\uac00<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 COMMENT &#8216;XXX&#8217;<br \/>\n-&gt; SHOW TABLE STATUS<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 MODIFY \ud544\ub4dc\uba85 \ud544\ub4dc\ud0c0\uc785 [DEFAULT &#8216;XXX&#8217;] COMMENT &#8216;YYY&#8217;;<br \/>\n-&gt; SHOW CREATE TABLE \ud14c\uc774\ube14\uba85<\/p>\n<p>&nbsp;<\/p>\n<p>\u25b6 \uc778\ub371\uc2a4 \uad00\ub828<br \/>\n1. \uc778\ub371\uc2a4 \uc0dd\uc131<br \/>\n&#8211; CREATE INDEX \uc778\ub371\uc2a4\uba85 ON \ud14c\uc774\ube14\uba85 (\ud544\ub4dc1, \ud544\ub4dc2, &#8230;)<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 ADD INDEX [\uc778\ub371\uc2a4\uba85] [\uc778\ub371\uc2a4\ud0c0\uc785] (\ud544\ub4dc1, \ud544\ub4dc2, &#8230;)<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 ADD [CONSTRAINT [\uc2ec\ubcfc]] PRIMARY KEY [\uc778\ub371\uc2a4\ud0c0\uc785] (\ud544\ub4dc1, \ud544\ub4dc2, &#8230;)<\/p>\n<p>&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 ADD [CONSTRAINT [\uc2ec\ubcfc]] FOREIGN KEY [\uc778\ub371\uc2a4\uba85] (\ud544\ub4dc1, \ud544\ub4dc2, &#8230;) [\ub808\ud37c\ub7f0\uc2a4\uc870\uac74]<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85\u00a0ADD [CONSTRAINT [\uc2ec\ubcfc]] UNIQUE [\uc778\ub371\uc2a4\uba85] [\uc778\ub371\uc2a4\ud0c0\uc785] (\ud544\ub4dc1, \ud544\ub4dc2, &#8230;)<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 ADD FULLTEXT [\uc778\ub371\uc2a4\uba85] (\ud544\ub4dc1, \ud544\ub4dc2, &#8230;)<\/p>\n<p>&nbsp;<\/p>\n<p>2. \uc778\ub371\uc2a4 \ubcf4\uae30<br \/>\n&#8211; SHOW INDEX FROM \ud14c\uc774\ube14\uba85<\/p>\n<p>&nbsp;<\/p>\n<p>3. \uc778\ub371\uc2a4 \uc0ad\uc81c<br \/>\n&#8211; DROP INDEX \uc778\ub371\uc2a4\uba85 ON \ud14c\uc774\ube14\uba85<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 DROP INDEX \uc778\ub371\uc2a4\uba85<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 DROP PRIMARY KEY<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 DROP FOREIGN KEY [fk_symbol]<\/p>\n<p>&nbsp;<\/p>\n<p>4. \ud0a4 \ud65c\uc131\ud654<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 ENABLE KEYS<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 DISABLE KEYS<\/p>\n<p>&nbsp;<\/p>\n<p>5. \uc815\ub82c<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 ORDER BY \ud544\ub4dc\uba85<\/p>\n<p>&nbsp;<\/p>\n<p>6. \uce90\ub9ad\ud130 \uc14b<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 CONVER TO CHARACTER SET \uce90\ub9ad\ud130\uc14b<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 CHARACTER SET \uce90\ub9ad\ud130\uc14b<\/p>\n<p>&nbsp;<\/p>\n<p>7. \ub370\uc774\ud130\ubca0\uc774\ud2b8 \uc5d4\uc9c4 \ubcc0\uacbd<br \/>\n&#8211; ALTER TABLE \ud14c\uc774\ube14\uba85 ENGINE={InnoDB | MyISAM}<\/p>\n<p>&nbsp;<\/p>\n<p>\u25b6 \uc720\uc6a9 \uba85\ub839\uc5b4<br \/>\nHELP SHOW<br \/>\nHELP {SELECT | DELETE | UPDATE}<br \/>\nHELP ALTER<br \/>\nHELP ALTER {DATABASE | TABLE}<\/p>\n<p>SHOW PRIVILEGES<br \/>\nSHOW OPEN TABLES<br \/>\nSHOW TABLE STATUS<\/p>\n<\/div>\n<p>\ucd9c\ucc98 &#8211;\u00a0\u00a0<a href=\"http:\/\/blog.naver.com\/goddes4?Redirect=Log&amp;logNo=30116416169\">http:\/\/blog.naver.com\/goddes4?Redirect=Log&amp;logNo=30116416169<\/a><\/p>\n<p>==============================================================================================<\/p>\n<p>Alter\ubb38\uc744 \uc774\uc6a9\ud558\uba74 \ud14c\uc774\ube14\uc5d0 \uc5f4\uc744 \ucd94\uac00\ud558\ub294 \ub4f1 \uad6c\uc870\ub97c \ubcc0\uacbd\ud560 \uc218 \uc788\ub2e4.<\/p>\n<p>Alter\ubb38\uc5d0\ub294 \uc5ec\ub7ec\uac00\uc9c0 \uc5f0\uc0b0\uc790\uac00 \uc788\ub2e4.<br \/>\n&#8211; Add : \ud14c\uc774\ube14\uc5d0 \uc5f4\uc744 \ucd94\uac00\ud55c\ub2e4.<br \/>\n&#8211; Rename to : \ud14c\uc774\ube14\uc758 \uc774\ub984\uc744 \ubc14\uafbc\ub2e4.<br \/>\n&#8211; Change : \uae30\uc874 \uc5f4\uc758 \uc774\ub984\uacfc \ub370\uc774\ud130 \ud0c0\uc785\uc744 \ubc14\uafbc\ub2e4.<br \/>\n&#8211; Modify : \uae30\uc874 \uc5f4\uc758 \ub370\uc774\ud130 \ud0c0\uc785\uc774\ub098 \uc704\uce58\ub97c \ubcc0\uacbd\ud55c\ub2e4.<br \/>\n&#8211; Drop : \ud14c\uc774\ube14\uc758 \uc5f4\uc744 \uc81c\uac70\ud55c\ub2e4.<\/p>\n<p><strong>Add \uc5f0\uc0b0\uc790<\/strong><br \/>\n&#8211; \ud14c\uc774\ube14\uc5d0 \uc5f4\uc744 \ucd94\uac00\ud560 \uc218 \uc788\ub2e4.<\/p>\n<p>mysql&gt; alter table \ud14c\uc774\ube14\uba85 add column \ucd94\uac00\ud558\ub824\ub294 \uceec\ub7fc\uba85 first(\uc704\uce58);<\/p>\n<p>\uc608) \uae30\uc874 \ud14c\uc774\ube14\uc5d0 \uc81c 1\uc815\uaddc\ud654\ub97c \uc801\uc6a9\ud558\ub824\uace0 \ud55c\ub2e4.(\uae30\ubcf8\ud0a4 \uceec\ub7fc \uc801\uc6a9)<\/p>\n<p>mysql&gt; alter table \ud14c\uc774\ube14\uba85 add cloumn \uceec\ub7fc\uba85\u00a0<span style=\"color: #c84205;\">int<\/span>\u00a0<span style=\"color: #3058d2;\">not null<\/span>\u00a0auto_increment\u00a0<span style=\"color: #2b8400;\">first<\/span>, \u00a0\/\/\uccab\ubc88\uc7ac \uceec\ub7fc\uc704\uce58\uc5d0 \ucd94\uac00<br \/>\nadd primary key (\uceec\ub7fc\uba85); \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ (\uceec\ub7fc\uba85)\uc744 \uae30\ubcf8\ud0a4\ub85c \uc124\uc815<\/p>\n<p>* first\ub294 \uccab\ubc88\uc9f8 \uceec\ub7fc \uc704\uce58\uc5d0 \uc9d1\uc5b4 \ub123\uc73c\ub77c\ub294 \ud0a4\uc6cc\ub4dc\uc774\ub2e4.<\/p>\n<p>* first\uc790\ub9ac\uc5d0\ub294 \uc5ec\ub7ec \ud0a4\uc6cc\ub4dc\uac00 \ub4e4\uc5b4\uac08 \uc218 \uc788\ub2e4.<br \/>\n&#8211; first, second, third, &#8230; , last, before, after \ub4f1\ub4f1<\/p>\n<p>* before\uacfc after \uc0ac\uc6a9\ubc29\ubc95<\/p>\n<p>mysql&gt; alter table my_contacts add column phone varchar(10)\u00a0<strong>before<\/strong>\u00a0last_name;<\/p>\n<div>my_contacts<\/div>\n<table width=\"590\" cellspacing=\"1\" cellpadding=\"1\" bgcolor=\"#ffffff\">\n<tbody>\n<tr>\n<td width=\"20%\">\u00a0contact_id<\/td>\n<td width=\"20%\"><strong>phone\u00a0<\/strong><\/td>\n<td width=\"20%\">last_name<\/td>\n<td width=\"20%\">first_name<\/td>\n<td width=\"20%\">email<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>mysql&gt; alter table my_contacts add cloumn phone varchar(10) after last_name;<\/p>\n<div>\nmy_contacts<\/div>\n<table width=\"590\" cellspacing=\"1\" cellpadding=\"1\" bgcolor=\"#ffffff\">\n<tbody>\n<tr>\n<td width=\"20%\">\u00a0contact_id<\/td>\n<td width=\"20%\">last_name<\/td>\n<td width=\"20%\"><strong>phone<\/strong><\/td>\n<td width=\"20%\">first_name<\/td>\n<td width=\"20%\">email<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Alter\ubb38\uc758 Rename to \uc5f0\uc0b0\uc790\ub97c \uc774\uc6a9\ud558\uc5ec \ud14c\uc774\ube14\uc758 \uc774\ub984\uc744 \ubcc0\uacbd\ud560 \uc218 \uc788\ub2e4.<\/p>\n<p>mysql&gt; alter table \uae30\uc874 \ud14c\uc774\ube14\uba85\u00a0<strong>rename to<\/strong>\u00a0\uc0c8\ub85c\uc6b4 \ud14c\uc774\ube14\uba85;<\/p>\n<p>Alter\ubb38\uc758 Change \uc5f0\uc0b0\uc790\ub97c \uc774\uc6a9\ud558\uba74 \uae30\uc874 \uc5f4\uc758 \uc774\ub984\uacfc \ub370\uc774\ud130 \ud0c0\uc785\uc744 \ubc14\uafc0 \uc218 \uc788\ub2e4.<\/p>\n<p>mysql&gt; alter table \ud14c\uc774\ube14\uba85\u00a0<strong>change<\/strong>\u00a0column\u00a0<span style=\"color: #e31600;\">\uceec\ub7fc\uba85<\/span>\u00a0<span style=\"color: #3058d2;\">\uc0c8\ub85c\uc6b4 \uceec\ub7fc\uba85<\/span>\u00a0<span style=\"color: #2b8400;\">\uc18d\uc131<\/span>;<\/p>\n<p>\uc608) project_list \ud14c\uc774\ube14\uc758 &#8216;<span style=\"color: #e31600;\">number<\/span>&#8216;\ub77c\ub294 \uc5f4\uc758 \uc774\ub984\uc744 &#8216;<span style=\"color: #3058d2;\">proj_id<\/span>&#8216;\ub85c \uace0\uce5c\ud6c4 \uc81c 1\uc815\uaddc\ud654\ub97c \uc801\uc6a9\ud55c\ub2e4.<\/p>\n<p>mysql&gt; alter table project_list\u00a0<strong>change<\/strong>\u00a0column\u00a0<span style=\"color: #e31600;\">number<\/span>\u00a0<span style=\"color: #3058d2;\">proj_id<\/span>\u00a0<span style=\"text-decoration: underline;\"><span style=\"color: #49b5d5;\">int<\/span>\u00a0<span style=\"color: #af65dd;\">not null<\/span>\u00a0auto_increment<\/span>, \u00a0\/\/ \ubc11\uc904 : \uc18d\uc131<br \/>\n<strong>add<\/strong>\u00a0primary key (proj_id); \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ \uae30\ubcf8\ud0a4 \uc801\uc6a9<\/p>\n<p>\ud55c\uaebc\ubc88\uc5d0 \uc5ec\ub7ec\uac1c\uc758 \uceec\ub7fc\uc744 \uc218\uc815\ud560 \uc218 \uc788\ub2e4.<\/p>\n<p>\uc608) project_list \ud14c\uc774\ube14\uc758 \uceec\ub7fc &#8216;<span style=\"color: #e31600;\">descriptionofproj<\/span>&#8216; \ub97c &#8216;<span style=\"color: #3058d2;\">proj_desc<\/span>&#8216; \uc774\ub984\uc73c\ub85c \ub370\uc774\ud130 \ud0c0\uc785\uc744 varchar(100)\uc73c\ub85c,<br \/>\n\uceec\ub7fc &#8216;<span style=\"color: #e31600;\">contractoronjob<\/span>&#8216;\ub97c &#8216;<span style=\"color: #3058d2;\">con_name<\/span>&#8216; \uc774\ub984\uc73c\ub85c \ub370\uc774\ud130\ud0c0\uc785\uc744 varchar(30)\uc73c\ub85c \uc218\uc815\ud55c\ub2e4.<\/p>\n<p>mysql&gt; alter table project_list\u00a0<strong>change<\/strong>\u00a0column\u00a0<span style=\"color: #e31600;\">descriptionofproj<\/span>\u00a0<span style=\"color: #3058d2;\">proj_desc<\/span>\u00a0varchar(100),<br \/>\n<strong>change<\/strong>\u00a0column\u00a0<span style=\"color: #e31600;\">contractoronjob<\/span>\u00a0<span style=\"color: #3058d2;\">con_name<\/span>\u00a0varchar(30);<\/p>\n<p>* \ub370\uc774\ud130\ud0c0\uc785\ub9cc \uc218\uc815\ud560 \uacbd\uc6b0 Modify\ub97c \ud65c\uc6a9\ud560 \uac83!<br \/>\n<a href=\"http:\/\/warmz.tistory.com\/247\">http:\/\/warmz.tistory.com\/247<\/a><\/p>\n<p>\uc608) projekts\ub77c\ub294 \ud14c\uc774\ube14 \uc774\ub984\uc744 project_list\ub85c \ubc14\uafb8\ub824\uace0 \ud55c\ub2e4.<\/p>\n<p>myslq&gt; alter table projekts<strong>\u00a0rename to<\/strong>\u00a0project_list;<\/p>\n<p>Alter\ubb38\uc758 Modify \uc5f0\uc0b0\uc790\ub97c \uc774\uc6a9\ud558\uba74 \uceec\ub7fc\uc758 \uc704\uce58\ub098 \ub370\uc774\ud130 \ud0c0\uc785\uc744 \ubcc0\uacbd\ud560 \uc218 \uc788\ub2e4.<\/p>\n<p>mysql&gt; alter table \ud14c\uc774\ube14\uba85\u00a0<strong>modify<\/strong>\u00a0column \uceec\ub7fc\uba85\u00a0<span style=\"color: #2b8400;\">\uc704\uce58 \ud639\uc740 \ub370\uc774\ud130 \ud0c0\uc785<\/span>;<\/p>\n<p>\uc608) \uae30\uc874\uc758 \uceec\ub7fc\uba85\uc740 \uadf8\ub300\ub85c \uc0ac\uc6a9\ud558\ub418 \ub370\uc774\ud130 \ud0c0\uc785\uc744 \ubc14\uafb8\ub824\uace0 \ud55c\ub2e4.<\/p>\n<p>mysql&gt; alter table \ud14c\uc774\ube14\uba85\u00a0<strong>modify<\/strong>\u00a0column \uceec\ub7fc\uba85\u00a0<span style=\"color: #2b8400;\">varchar(120)<\/span>;<\/p>\n<p><strong>\uc5f4\uc758 \uc21c\uc11c\ub97c \ubc14\uafb8\ub824\uba74?<\/strong><br \/>\n&#8211; \ud14c\uc774\ube14\uc774 \ub9cc\ub4e4\uc5b4\uc9c4 \ud6c4\uc758 \uc5f4\uc758 \uc21c\uc11c\ub97c \ubc14\uafb8\ub294 \uac83\uc740 \ubd88\uac00\ub2a5\ud558\ub2e4.<br \/>\n&#8211; \ud55c\uac00\uc9c0 \ubc29\ubc95\uc740 \uc0c8\ub85c\uc6b4 \uc5f4\uc744 \uc6d0\ud558\ub294 \uc704\uce58\uc5d0 \ucd94\uac00\ud558\uace0 \uc608\uc804 \uc5f4\uc744 \uc0ad\uc81c\ud558\ub294 \uac83\uc774\ub2e4.<br \/>\n&#8211; \ub610\ub2e4\ub978 \ubc29\ubc95\uc740 \ucffc\ub9ac \uacb0\uacfc \ucd9c\ub825\uc2dc \uc5f4\uc774 \ud45c\uc2dc\ub418\ub294 \uc21c\uc11c\ub97c \uc815\ud574\uc8fc\ub294 \uac83\uc774\ub2e4.<\/p>\n<p>* \ucffc\ub9ac \uacb0\uacfc \ud45c\uc2dc\ub418\ub294 \uc5f4\uc758 \uc21c\uc11c\ub97c \uc815\ud574\uc8fc\ub294 \ubc29\ubc95<\/p>\n<p>mysql&gt; select column3, column1 from \ud14c\uc774\ube14\uba85;<\/p>\n<p>\ub610\ub294<\/p>\n<p>select column1, column3 from \ud14c\uc774\ube14\uba85;<\/p>\n<p>Alter\ubb38\uc5d0\uc11c Drop \uc5f0\uc0b0\uc790\ub97c \uc774\uc6a9\ud558\uba74 \ud2b9\uc815 \uceec\ub7fc\uc744 \uc0ad\uc81c\ud560 \uc218 \uc788\ub2e4.<\/p>\n<p>mysql&gt; alter table \ud14c\uc774\ube14\uba85 drop \uceec\ub7fc\uba85;<\/p>\n<p>* \uceec\ub7fc\uc744 \uc0ad\uc81c\ud558\uba74 \uadf8 \uc548\uc5d0 \uc800\uc7a5\ub418\uc5b4 \uc788\ub358 \ubaa8\ub4e0 \ub370\uc774\ud130\ub294 \uc0ac\ub77c\uc9c0\ubbc0\ub85c \uc870\uc2ec\ud560 \uac83!<\/p>\n<p>\ucd9c\ucc98 &#8211;\u00a0<a href=\"http:\/\/linuxism.tistory.com\/425\">http:\/\/linuxism.tistory.com\/425<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; \uceec\ub7fc \ucd94\uac00 ALTER TABLE &lt;\ud14c\uc774\ube14\uba85&gt;\u00a0ADD\u00a0&lt;\uceec\ub7fc&gt; &lt;\ub370\uc774\ud130 \ud0c0\uc785&gt;\u00a0AFTER\u00a0&lt;\ud14c\uc774\ube0c\uba85&gt; \uceec\ub7fc\uba85 \ubcc0\uacbd, \ud0c0\uc785 \ubcc0\uacbd ALTER TABLE &lt;\ud14c\uc774\ube14\uba85&gt;\u00a0CHANGE\u00a0&lt;OLD \uceec\ub7fc&gt; &lt;NEW \uceec\ub7fc&gt; &lt;\ub370\uc774\ud130 \ud0c0\uc785&gt; \uceec\ub7fc \uc0ad\uc81c ALTER TABLE &lt;\ud14c\uc774\ube14\uba85&gt;\u00a0DROP\u00a0&lt;\uceec\ub7fc\uba85&gt; \uceec\ub7fc \ud0c0\uc785 \ubcc0\uacbd ALTER TABLE&hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=\/wp\/v2\/posts\/1252"}],"collection":[{"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1252"}],"version-history":[{"count":0,"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=\/wp\/v2\/posts\/1252\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}