{"id":60,"date":"2014-03-24T18:37:40","date_gmt":"2014-03-24T09:37:40","guid":{"rendered":"http:\/\/www.dbsheetclient.jp\/blog\/?p=60"},"modified":"2018-06-27T16:52:14","modified_gmt":"2018-06-27T07:52:14","slug":"sql%e4%b8%bb%e3%82%ad%e3%83%bc%e3%81%ae%e8%bf%bd%e5%8a%a0%e3%83%bb%e5%89%8a%e9%99%a4","status":"publish","type":"post","link":"https:\/\/www.dbsheetclient.jp\/blog\/?p=60","title":{"rendered":"SQL\u4e3b\u30ad\u30fc\u306e\u8ffd\u52a0\u30fb\u524a\u9664"},"content":{"rendered":"

IT\u30b3\u30fc\u30c7\u30a3\u30cd\u30fc\u30bf\u306e\u30b7\u30e5\u30a6\u3067\u3059\u3002<\/p>\n

\"untitled\"<\/a><\/p>\n

\u4eac\u90fd\u306b\u884c\u3063\u305f\u3068\u304d\u306b\u64ae\u3063\u305f\u6885\u306e\u82b1\u3067\u3059\u3002<\/p>\n

\u4eca\u5e74\u3082\u8cc7\u683c\u66f4\u65b0\u306e\u305f\u3081\u306e\u30dd\u30a4\u30f3\u30c8\u53d6\u5f97\u306e\u671f\u9650\u304c\u8feb\u3063\u3066\u304d\u307e\u3057\u305f\u30023\u6708\u672b\u307e\u3067\u306b\u3001\u4f55\u3068\u304b\u9811\u5f35\u3063\u3066\u30013\u5e74\u959330\u30dd\u30a4\u30f3\u30c8\u306b\u4e0d\u8db3\u3057\u3066\u3044\u308b\u5206\u3092\u53d6\u3089\u306a\u3044\u3068\uff01\u3000\u3084\u3063\u3068\u4f55\u3068\u304b\u30af\u30ea\u30a2\u3067\u304d\u305d\u3046\u306a\u3068\u3053\u308d\u306b\u6765\u305f\u3093\u3067\u3059\u3051\u3069\u306d\u3002\u3002\u3002<\/p>\n

\u4f1a\u793e\u306e\u4ed5\u4e8b\u3082\u307e\u305f\u5fd9\u3057\u304f\u306a\u3063\u3066\u6765\u305f\u3068\u3053\u308d\u306a\u3093\u3060\u3051\u3069\u3001\u9811\u5f35\u308b\u305e\uff01<\/p>\n

\u3061\u306a\u307f\u306b\u3001IT\u30b3\u30fc\u30c7\u30a3\u30cd\u30fc\u30bf\u306f\u3001\u30d7\u30ed\u30bb\u30b9\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308a\u3001IT\u7d4c\u55b6\u3092\u63a8\u9032\u3059\u308b\u305f\u3081\u3001IT\u30b3\u30fc\u30c7\u30a3\u30cd\u30fc\u30bf\u306e\u5099\u3048\u308b\u3079\u304d\u5b9f\u8df5\u529b\u3084\u4ed5\u4e8b\u306e\u9032\u3081\u65b9\u306b\u3064\u3044\u3066\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3068\u3057\u3066\u307e\u3068\u3081\u3001\u3053\u308c\u3092\u516c\u958b\u3057\u3066\u3044\u307e\u3059\u3002\u304b\u306a\u308a\u5e83\u7bc4\u56f2\u3067\u30dc\u30ea\u30e5\u30fc\u30e0\u3082\u3042\u308a\u307e\u3059\u3002
http:\/\/www.itc.or.jp\/about\/guideline\/<\/a><\/p>\n

\"it-coordinator\u2460-1\"<\/a><\/p>\n

\uff1c\u672c\u65e5\u306e\u984c\u6750\uff1e
<\/strong>\u524d\u56de\u306e\u30c6\u30fc\u30de\u3060\u3063\u305f\u3001\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\u5f8c\u306e\u5b9a\u7fa9\u5909\u66f4\u306eSQL\u306e\u7d9a\u304d<\/p>\n

\u3010\u4e3b\u30ad\u30fc\u306e\u8ffd\u52a0\u3011<\/strong><\/p>\n

Oracle\/SQL Server\uff1a
ALTER TABLE \u30c6\u30fc\u30d6\u30eb\u540d ADD CONSTRAINT \u4e3b\u30ad\u30fc\u5236\u7d04\u540d PRIMARY KEY (\u5217\u540d);<\/p>\n

\u4f8b\uff09\u793e\u54e1\u30de\u30b9\u30bf\u306e\u793e\u54e1\u30b3\u30fc\u30c9\u3092\u4e3b\u30ad\u30fc\u306b\u3059\u308b
Oracle\uff1a
ALTER TABLE \u793e\u54e1\u30de\u30b9\u30bf ADD CONSTRAINT PK_\u793e\u54e1 PRIMARY KEY (\u793e\u54e1\u30b3\u30fc\u30c9);<\/p>\n

Oracle\u306e\u5834\u5408\u306fNOT NULL\u5236\u7d04\u3092\u3064\u3051\u3066\u3044\u306a\u3044\u9805\u76ee\u3067\u3082\u4e00\u767a\u3067\u4e3b\u30ad\u30fc\u3092\u8ffd\u52a0\u3067\u304d\u308b\uff08\u81ea\u52d5\u7684\u306bNOT NULL\u306b\u5909\u66f4\u3057\u3066\u304f\u308c\u308b)\u3002<\/p>\n

SQL> desc \u793e\u54e1\u30de\u30b9\u30bf<\/p>\n

\u540d\u524d NULL? \u578b
—————— ——– —————————-
\u793e\u54e1\u30b3\u30fc\u30c9 VARCHAR2(10)
\u793e\u54e1\u540d VARCHAR2(40)<\/p>\n

SQL> ALTER TABLE \u793e\u54e1\u30de\u30b9\u30bf ADD CONSTRAINT PK_\u793e\u54e1 PRIMARY KEY (\u793e\u54e1\u30b3\u30fc\u30c9);<\/p>\n

\u8868\u304c\u5909\u66f4\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n

SQL> desc \u793e\u54e1\u30de\u30b9\u30bf<\/p>\n

\u540d\u524d NULL? \u578b
——————- ————– —————————-
\u793e\u54e1\u30b3\u30fc\u30c9 NOT NULL VARCHAR2(10)
\u793e\u54e1\u540d VARCHAR2(40)<\/p>\n

\u3057\u304b\u3057\u3001SQL Server\u3067\u306fNOT NULL\u5236\u7d04\u304c\u306a\u3044\u5834\u5408\u306b\u306f\u3001\u4e00\u65e6NOT NULL\u306b\u5909\u66f4\u3057\u3066\u304b\u3089\u3067\u306a\u3044\u3068\u4e3b\u30ad\u30fc\u3092\u8ffd\u52a0\u3067\u304d\u306a\u3044\u3002<\/p>\n

SQL Server\uff1a<\/p>\n

ALTER TABLE \u793e\u54e1\u30de\u30b9\u30bf ALTER COLUMN \u793e\u54e1\u30b3\u30fc\u30c9 VARCHAR(10) NOT NULL;<\/p>\n

ALTER TABLE \u793e\u54e1\u30de\u30b9\u30bf ADD CONSTRAINT PK_\u793e\u54e1 PRIMARY KEY (\u793e\u54e1\u30b3\u30fc\u30c9);<\/p>\n

\u6700\u521d\u306bNOT NULL\u5236\u7d04\u3092\u3064\u3051\u3066\u306a\u3044\u3068\u3001PRIMARY KEY\u3092\u8ffd\u52a0\u3057\u3088\u3046\u3068\u3057\u305f\u3068\u304d\u306b\u3001\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3002<\/p>\n

ALTER TABLE \u793e\u54e1\u30de\u30b9\u30bf ADD CONSTRAINT PK_\u793e\u54e1 PRIMARY KEY (\u793e\u54e1\u30b3\u30fc\u30c9);
\u30e1\u30c3\u30bb\u30fc\u30b88111\u3001\u30ec\u30d9\u30eb16\u3001\u72b6\u614b1\u3001\u884c1<\/p>\n

\u30c6\u30fc\u30d6\u30eb’\u793e\u54e1\u30de\u30b9\u30bf’ \u306eNULL \u5024\u304c\u8a31\u53ef\u3055\u308c\u308b\u5217\u306bPRIMARY KEY \u5236\u7d04\u3092\u5b9a\u7fa9\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n

\u203bSQL Server\u3067\u3082\u3001\u6700\u521d\u306eCREATE TABLE\u6587\u3067\u4e3b\u30ad\u30fc\u3092\u8a2d\u5b9a\u3059\u308b\u5834\u5408\u306f\u3001NOT NULL\u306f\u8a18\u8ff0\u3057\u3066\u306a\u304f\u3066\u3082\u81ea\u52d5\u3067NOT NULL\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u3010\u4e3b\u30ad\u30fc\u306e\u524a\u9664\u3011<\/strong><\/p>\n

Oracle\uff1a\u4ee5\u4e0b\u306e\u3069\u3061\u3089\u304b\u3067\u53ef\u80fd
ALTER TABLE \u30c6\u30fc\u30d6\u30eb\u540d DROP PRIMARY KEY;
ALTER TABLE \u30c6\u30fc\u30d6\u30eb\u540d DROP CONSTRAINT \u4e3b\u30ad\u30fc\u5236\u7d04\u540d;<\/p>\n

\u4f8b\uff09
ALTER TABLE \u793e\u54e1\u30de\u30b9\u30bf DROP PRIMARY KEY;
\u307e\u305f\u306f\u3001
ALTER TABLE \u793e\u54e1\u30de\u30b9\u30bf DROP CONSTRAINT PK_\u793e\u54e1;<\/p>\n

\u3061\u306a\u307f\u306b\u3001\u5236\u7d04\u540d\u304c\u308f\u304b\u3089\u306a\u3044\u3068\u304d\u306f\u3001\u4e0b\u8a18\u306e\u30b3\u30de\u30f3\u30c9\u3067\u691c\u7d22\u3067\u304d\u308b\u3002
SQL>
SELECT CONSTRAINT_NAME, CONSTRAINT_TYPE,TABLE_NAME
FROM user_constraints
WHERE TABLE_NAME = ‘\u793e\u54e1\u30de\u30b9\u30bf’;<\/p>\n

CONSTRAINT_NAME C TABLE_NAME
—————————- — ——————————
PK_\u793e\u54e1 P \u793e\u54e1\u30de\u30b9\u30bf<\/p>\n

\u3061\u306a\u307f\u306b\u3001CONSTRAINT_TYPE\u3068\u3044\u3046\u306e\u306f\u5236\u7d04\u5b9a\u7fa9\u306e\u30bf\u30a4\u30d7\u3067\u3001\u5024\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002
\u300cC\u300dCHECK\u5236\u7d04
\u300cP\u300d\u4e3b\u30ad\u30fc\u5236\u7d04\uff08\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\uff09
\u300cU\u300d\u4e00\u610f\u306e\u30ad\u30fc
\u300cR\u300d\u53c2\u7167\u6574\u5408\u6027
\u300cV\u300d\u30d3\u30e5\u30fc\u3067\u306e\u30c1\u30a7\u30c3\u30af\u30fb\u30aa\u30d7\u30b7\u30e7\u30f3\u4ed8\u304d
\u300cO\u300d\u30d3\u30e5\u30fc\u3067\u8aad\u53d6\u308a\u5c02\u7528<\/p>\n

SQL Server\uff1a
ALTER TABLE \u30c6\u30fc\u30d6\u30eb\u540d DROP CONSTRAINT \u4e3b\u30ad\u30fc\u5236\u7d04\u540d;<\/p>\n

\u4f8b\uff09
ALTER TABLE \u793e\u54e1\u30de\u30b9\u30bf DROP CONSTRAINT PK_\u793e\u54e1;
\u3082\u3061\u308d\u3093\u3001SQL Server\u306e\u5834\u5408\u306fGUI\u30c4\u30fc\u30eb\u304c\u4f7f\u3044\u3084\u3059\u3044\u306e\u3067\u3001Enterprise Manager\u3067\u3082\u30ad\u30fc\u3092\u7c21\u5358\u306b\u524a\u9664\u3067\u304d\u308b\u3002<\/p>\n

\u4e3b\u30ad\u30fc\u306e\u8a2d\u5b9a\u3057\u76f4\u3057\u3082\u3001\u524a\u9664\u21d2\u8ffd\u52a0\u3067\u57fa\u672c\u554f\u984c\u306a\u3044\u306f\u305a\u3067\u3059\u3002<\/p>\n

RDB\u306e\u5834\u5408\u3001\u30c6\u30fc\u30d6\u30eb\u306b\u4e3b\u30ad\u30fc\u3092\u6301\u305f\u305b\u308b\u306e\u306f\u591a\u3044\u3068\u306f\u601d\u3044\u307e\u3059\u304c\u3001\u4eca\u307e\u3067ACCESS\u3084EXCEL\u3067\u884c\u3063\u3066\u304d\u305f\u696d\u52d9\u3092\u3001SQL Server\u3084Oracle\u306b\u79fb\u884c\u3059\u308b\u5834\u5408\u306b\u3001\u3082\u3068\u3082\u3068\u306emdb\u5074\u3067\u4e3b\u30ad\u30fc\u3092\u6301\u305f\u305b\u3066\u3044\u306a\u3044\u5834\u5408\u3068\u304b\u3001\u898b\u53d7\u3051\u3089\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u306d\u3002\u5f8c\u304b\u3089\u4e3b\u30ad\u30fc\u3092\u8ffd\u52a0\u3057\u305f\u308a\u3059\u308b\u3068\u304d\u306b\u3001\u899a\u3048\u3066\u304a\u304f\u3068\u3044\u3044\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u4eca\u65e5\u306f\u4ee5\u4e0a\u307e\u3067<\/p>\n","protected":false},"excerpt":{"rendered":"

IT\u30b3\u30fc\u30c7\u30a3\u30cd\u30fc\u30bf\u306e\u30b7\u30e5\u30a6\u3067\u3059\u3002 \u4eac\u90fd\u306b\u884c\u3063\u305f\u3068\u304d\u306b\u64ae\u3063\u305f\u6885\u306e\u82b1\u3067\u3059\u3002 \u4eca\u5e74\u3082\u8cc7\u683c\u66f4\u65b0\u306e\u305f\u3081\u306e\u30dd\u30a4\u30f3\u30c8\u53d6\u5f97\u306e\u671f\u9650\u304c\u8feb\u3063\u3066\u304d\u307e\u3057\u305f\u30023\u6708\u672b\u307e\u3067\u306b\u3001\u4f55\u3068\u304b\u9811\u5f35\u3063\u3066\u30013\u5e74\u959330\u30dd\u30a4\u30f3\u30c8\u306b\u4e0d\u8db3\u3057\u3066\u3044\u308b\u5206\u3092\u53d6\u3089\u306a\u3044\u3068\uff01\u3000\u3084\u3063\u3068\u4f55\u3068 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[4],"tags":[],"class_list":["post-60","post","type-post","status-publish","format-standard","hentry","category-4"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/60","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=60"}],"version-history":[{"count":12,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/60\/revisions"}],"predecessor-version":[{"id":1995,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/60\/revisions\/1995"}],"wp:attachment":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=60"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=60"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=60"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}