{"id":138,"date":"2009-12-16T15:10:02","date_gmt":"2009-12-16T07:10:02","guid":{"rendered":"http:\/\/blog.infinity.idv.tw\/index.php\/2009\/12\/16\/mysql%e6%97%a5%e6%9c%9f%e5%87%bd%e6%95%b8%e6%87%89%e7%94%a8\/"},"modified":"2009-12-16T16:28:17","modified_gmt":"2009-12-16T08:28:17","slug":"mysql%e6%97%a5%e6%9c%9f%e5%87%bd%e6%95%b8%e6%87%89%e7%94%a8","status":"publish","type":"post","link":"http:\/\/blog.infinity.idv.tw\/?p=138","title":{"rendered":"MySQL\u65e5\u671f\u51fd\u6578\u61c9\u7528"},"content":{"rendered":"

\u67e5\u8a62\u73fe\u5728\u65e5\u671f<\/p>\n

mysql> select now();
+———————+
| now()                 |
+———————+
| 2009-12-16 14:56:18 |
+———————+
1 row in set (0.00 sec)<\/p>\n

 <\/p>\n

\u7d50\u679c\u53ea\u79c0\u5e74\u6708\u65e5 yyyy-mm-dd<\/p>\n

mysql> select curdate();
+————+
| curdate()  |
+————+
| 2009-12-16 |
+————+
1 row in set (0.00 sec)<\/p>\n

 <\/p>\n

select * from db<\/p>\n

where date = curdate();<\/p>\n

\u9019\u908a\u5c31\u8981\u770bdate\u7684\u5132\u5b58\u683c\u5f0f\u6c7a\u5b9a\u7528\u90a3\u7a2e\u6642\u9593\u683c\u5f0f\u7684\u51fd\u6578\u3002<\/p>\n

 <\/p>\n

SQL \u67e5\u8a62\u8a9e\u6cd5\u65e5\u671f\u52a0\u6e1b\u6cd5<\/p>\n

\u52a0\u4e00\u5929
DATE_ADD(\u65e5\u671f, INTERVAL 1 DAY);
\u6e1b\u4e00\u5929
DATE_SUB(\u65e5\u671f, INTERVAL 1 DAY);
\u52a0\u4e00\u6708
DATE_ADD(\u65e5\u671f, INTERVAL 1 MONTH)
\u6e1b\u4e00\u6708
DATE_SUB(\u65e5\u671f, INTERVAL 1 MONTH) <\/p>\n

\u7bc4\u4f8b
1. select from test where testday between DATE_SUB(2004-01-01 000000, INTERVAL 1 MONTH) and DATE_SUB(2004-01-01 235959, INTERVAL 1 DAY);<\/p>\n

 <\/p>\n

2.<\/p>\n

mysql> select DATE_ADD(curdate(), INTERVAL 1 DAY) as date;
+————+
| date       |
+————+
| 2009-12-17 |
+————+
1 row in set (0.00 sec)<\/p>\n

 <\/p>\n

3.\u53d6\u5e74<\/p>\n

mysql> select year(now())
    -> ;
+————-+
| year(now()) |
+————-+
|        2009 |
+————-+
1 row in set (0.00 sec) <\/p>\n

 <\/p>\n

4.\u53d6\u6708<\/p>\n

mysql> select day(now());
+————+
| day(now()) |
+————+
|         16 |
+————+
1 row in set (0.01 sec) <\/p>\n

 <\/p>\n

5.\u53d6\u65e5<\/p>\n

mysql> select month(now());
+————–+
| month(now()) |
+————–+
|           12 |
+————–+
1 row in set (0.00 sec)<\/p>\n

 <\/p>\n

\u9084\u6709\u5176\u4ed6\u6642\u9593\u55ae\u4f4d\u7684\u8868\u793a\u65b9\u5f0f\uff1a<\/p>\n

SECOND ss
MINUTE mm
HOUR hh
DAY DD
MONTH MM
YEAR YY
MINUTE_SECOND mm:ss
HOUR_MINUTE hh:mm
DAY_HOUR DD:hh
YEAR_MONTH YYYY-MM
HOUR_SECOND hh:ss
DAY_MINUTE DD hh:mm
DAY_SECOND DD hh:mm:ss <\/p>\n

\u7528\u6cd5\uff1a
DATE_ADD(‘2007-08-06 12:12:12′, INTERVAL ’10:01’ HOUR_SECOND);<\/p>\n","protected":false},"excerpt":{"rendered":"

\u67e5\u8a62\u73fe\u5728\u65e5\u671f<\/p>\n

mysql> select now(); +———————+ | now()                 | +———————+ | 2009-12-16 14:56:18 | +———————+ 1 row in set (0.00 sec)<\/p>\n

 <\/p>\n

\u7d50\u679c\u53ea\u79c0\u5e74\u6708\u65e5 yyyy-mm-dd<\/p>\n

mysql> select curdate(); +————+ | curdate()  […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[27],"tags":[152,151,153],"_links":{"self":[{"href":"http:\/\/blog.infinity.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/138"}],"collection":[{"href":"http:\/\/blog.infinity.idv.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.infinity.idv.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.infinity.idv.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.infinity.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=138"}],"version-history":[{"count":1,"href":"http:\/\/blog.infinity.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/138\/revisions"}],"predecessor-version":[{"id":139,"href":"http:\/\/blog.infinity.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/138\/revisions\/139"}],"wp:attachment":[{"href":"http:\/\/blog.infinity.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.infinity.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=138"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.infinity.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}