{"id":1621,"date":"2024-05-08T15:49:13","date_gmt":"2024-05-08T07:49:13","guid":{"rendered":"http:\/\/oneai.eu.org\/?p=1621"},"modified":"2024-05-08T15:49:13","modified_gmt":"2024-05-08T07:49:13","slug":"%e5%ad%97%e6%ae%b5%e5%80%bc%e6%9b%bf%e6%8d%a2","status":"publish","type":"post","link":"https:\/\/oneai.eu.org\/?p=1621","title":{"rendered":"\u5b57\u6bb5\u503c\u66ff\u6362"},"content":{"rendered":"

select replace(a1,'abbd','abcd') from dual;
\nSelect username,userpwd From test;
\nusername uesrpwd
\n1 tester2 tester2
\n2 tester1 123456
\n3 123 12 <\/p>\n

\u5c06tester1\u7684userpwd\u503c\u66ff\u6362\u6210tester456(\u5c06tester\u66ff\u6362\u6210test)
\nSelect userid, username,userpwd From test;
\nupdate test Set userpwd=replace(to_char(userpwd),'tester','test') where username='tester1';<\/p>\n

\u6ce8\u610f\uff1a\u66ff\u6362\u540e\u7684\u503c\u5b57\u6bb5\u5185\u5bb9\u7684\u957f\u5ea6\u4e0d\u80fd\u5927\u4e8e\u66ff\u6362\u524d\u7684\u5185\u5bb9\u7684\u957f\u5ea6\uff0c\u4e0d\u7136\u4f1a\u62a5\u9519(tester.length >=test.length)
\n\u652f\u6301\u5339\u914d\uff1a
\nSQL> SELECT regexp_replace(oldcol, '(.+)',' ') newcol FROM
\n2 (
\n3 SELECT '\u6b66\u6c491\u4e00\u4e00\u79d1\u6280\u516c\u53f8(2009\u5e742\u6708\u6ce8\u9500)' oldcol FROM dual UNION ALL
\n4 SELECT '\u6b66\u6c492\u4e00\u4e00\u79d1\u6280\u516c\u53f8(2009\u5e743\u6708\u6ce8\u9500)' oldcol FROM dual UNION ALL
\n5 SELECT '\u6b66\u6c493\u4e00\u4e00\u79d1\u6280\u516c\u53f8(2009\u5e744\u6708\u6ce8\u9500)' oldcol FROM dual UNION ALL
\n6 SELECT '\u6b66\u6c494\u4e00\u4e00\u79d1\u6280\u516c\u53f8(2009\u5e745\u6708\u6ce8\u9500)' oldcol FROM dual
\n7 );<\/p>\n

NEWCOL<\/h2>\n

\u6b66\u6c491\u4e00\u4e00\u79d1\u6280\u516c\u53f8
\n\u6b66\u6c492\u4e00\u4e00\u79d1\u6280\u516c\u53f8
\n\u6b66\u6c493\u4e00\u4e00\u79d1\u6280\u516c\u53f8
\n\u6b66\u6c494\u4e00\u4e00\u79d1\u6280\u516c\u53f8<\/p>\n","protected":false},"excerpt":{"rendered":"

select replace(a1,’abbd’,’abcd’) from dual; Select username,userpwd From test; username uesrpwd 1 tester2 tester2 2 tester1 123456 3 123 12 \u5c06tester1\u7684userpwd\u503c\u66ff\u6362\u6210tester456(\u5c06tester\u66ff\u6362\u6210test) Select userid, username,userpwd From test; update test Set userpwd=replace(to_char(userpwd),’tester’,’test’) where username=’tester1′; \u6ce8\u610f\uff1a\u66ff\u6362\u540e\u7684\u503c\u5b57\u6bb5\u5185\u5bb9\u7684\u957f\u5ea6\u4e0d\u80fd\u5927\u4e8e\u66ff\u6362\u524d\u7684\u5185\u5bb9\u7684\u957f\u5ea6\uff0c\u4e0d\u7136\u4f1a\u62a5\u9519(tester.length >=test.length) \u652f\u6301\u5339\u914d\uff1a SQL> SELECT regexp_replace(oldcol, ‘(.+)’,’ ‘) newcol FROM 2 ( 3 SELECT ‘\u6b66\u6c491\u4e00\u4e00\u79d1\u6280\u516c\u53f8(2009\u5e742\u6708\u6ce8\u9500)’ oldcol FROM dual UNION ALL 4 SELECT ‘\u6b66\u6c492\u4e00\u4e00\u79d1\u6280\u516c\u53f8(2009\u5e743\u6708\u6ce8\u9500)’ oldcol FROM dual UNION ALL 5 SELECT ‘\u6b66\u6c493\u4e00\u4e00\u79d1\u6280\u516c\u53f8(2009\u5e744\u6708\u6ce8\u9500)’ oldcol FROM dual UNION ALL 6 SELECT ‘\u6b66\u6c494\u4e00\u4e00\u79d1\u6280\u516c\u53f8(2009\u5e745\u6708\u6ce8\u9500)’ oldcol FROM dual 7 ); NEWCOL \u6b66\u6c491\u4e00\u4e00\u79d1\u6280\u516c\u53f8 \u6b66\u6c492\u4e00\u4e00\u79d1\u6280\u516c\u53f8 \u6b66\u6c493\u4e00\u4e00\u79d1\u6280\u516c\u53f8 \u6b66\u6c494\u4e00\u4e00\u79d1\u6280\u516c\u53f8<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","footnotes":""},"categories":[88,82],"tags":[],"class_list":["post-1621","post","type-post","status-publish","format-standard","hentry","category-oracle","category-82"],"_links":{"self":[{"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/posts\/1621","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1621"}],"version-history":[{"count":1,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/posts\/1621\/revisions"}],"predecessor-version":[{"id":1622,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/posts\/1621\/revisions\/1622"}],"wp:attachment":[{"href":"https:\/\/oneai.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1621"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1621"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1621"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}