{"id":6746,"date":"2018-07-19T15:05:55","date_gmt":"2018-07-19T07:05:55","guid":{"rendered":"https:\/\/sdeno.com\/?p=6746"},"modified":"2018-07-19T16:49:52","modified_gmt":"2018-07-19T08:49:52","slug":"mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e5%ad%98%e5%82%a8%e8%bf%87%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/sdeno.com\/?p=6746","title":{"rendered":"mysql\u6570\u636e\u5e93\u5b58\u50a8\u8fc7\u7a0b"},"content":{"rendered":"

\u4f18\u5316\uff1a<\/p>\n

1\uff0c\u5c06\u4e00\u4e9b\u4e1a\u52a1\u903b\u8f91\u653e\u5728\u6570\u636e\u5e93\u91cc\u5224\u65ad\uff0c\u6267\u884c\u6548\u7387\u5feb\u3002<\/p>\n

2\uff0c\u7a0b\u5e8f\u8bed\u8a00\u7684\u79fb\u690d\u4e5f\u65b9\u4fbf\u3002\u4f8b\u5982php\u8f6cjava\uff0c\u7b49\u7b49\u3002<\/p>\n

3\uff0c\u907f\u514dsql\u6ce8\u5165\u7684\u7834\u574f\u3002<\/p>\n

 <\/p>\n

 <\/p>\n

\u7f3a\u70b9\uff1a<\/p>\n

1\uff0c\u7ed9\u670d\u52a1\u5668\u9020\u6210\u538b\u529b<\/p>\n

2\uff0c\u8fc7\u591a\u4e1a\u52a1\u903b\u8f91\u653e\u5728\u6570\u636e\u5e93\u91cc\u5224\u65ad\uff0c\u4e0d\u597d\u7ef4\u62a4\uff0c\u4fee\u6539\u4e5f\u4e0d\u65b9\u4fbf\u3002\u5f80\u5f80\u90fd\u8981\u5220\u9664\u4e86\u5728\u91cd\u65b0\u58f0\u660e\u5b58\u50a8\u8fc7\u7a0b\u3002<\/p>\n

3\uff0c\u6362\u6570\u636e\u5e93\u4e4b\u540e\uff0c\u5b58\u50a8\u8fc7\u7a0b\u7684\u903b\u8f91\u8981\u91cd\u5199\u3002<\/p>\n

4\uff0c\u4e0d\u597d\u8c03\u8bd5<\/p>\n

 <\/p>\n

 <\/p>\n

\u5728\u521b\u5efamysql\u5b58\u50a8\u8fc7\u7a0b\u4e4b\u524d\uff0c\u8981\u5148\u804a\u4e00\u4e9b\u57fa\u7840\uff0c\u4e0d\u7136\u540e\u9762\u5b66\u4e60\u4f1a\u75db\u82e6\uff1a<\/p>\n

DELIMITER \/\/ \u8981\u5148\u8f93\u5165\uff0c\u8bf4\u660e\u4ee5\u4e0b\u4ee3\u7801\u662f\u5b58\u50a8\u8fc7\u7a0b\r\nCEATE PROCEDURE demo_in_parameter(IN p_in int) \u58f0\u660e\u5b58\u50a8\u8fc7\u7a0b\u540d\u4e3ademo_in_parameter\uff0c\u53c2\u6570\u540dp_in\uff0c\u8f93\u5165\u53c2\u6570\uff0c\u6574\u6570\u7c7b\u578b\r\n\r\nIN \/\/\u63a5\u6536\u5916\u6765\u503c\uff0c\u5916\u6765\u503c\u4e0d\u4f1a\u53d8\u3002\u5728\u5b58\u50a8\u8fc7\u7a0b\u4e2d\u6539\u53d8\u7684\u503c\u4e0d\u4f1a\u53bb\u4fee\u6539\u5168\u5c40\u73af\u5883\u7684\u503c \uff08\u6700\u597d\u770b\u4f8b\u5b50\uff09\r\nOUT \/\/\u4e0d\u63a5\u6536\u5916\u6765\u503c\uff0c\u4f46\u53ef\u4ee5\u76f4\u63a5\u4fee\u6539\u5916\u6765\u503c\u3002\u5728\u5b58\u50a8\u8fc7\u7a0b\u4e2d\u53ef\u4ee5\u4fee\u6539\u8986\u76d6\u5168\u5c40\u7684\u53d8\u91cf\uff08\u6700\u597d\u770b\u4f8b\u5b50\uff09\r\nINOUT \/\/\u63a5\u6536\u5916\u6765\u503c\uff0c\u503c\u4e5f\u4f1a\u88ab\u8986\u76d6\u3002\uff08\u6700\u597d\u770b\u4f8b\u5b50\uff09\r\n \r\nBEGIN ... END \u5b58\u50a8\u8fc7\u7a0b\u5f00\u59cb\u548c\u7ed3\u675f\u7b26\u53f7 \r\nSET @p_in=1 SET\u53ef\u4ee5\u5728\u5168\u5c40\u73af\u5883\u4e2d\u58f0\u660e\u53d8\u91cf\uff0c\u4e5f\u53ef\u4ee5\u5728\u5b58\u50a8\u8fc7\u7a0b\u4e2d\u4fee\u6539\u53d8\u91cf\u3002\u5b58\u50a8\u8fc7\u4e2d\u4e0d\u9700\u8981@\r\nDECLARE l_int int unsigned default 4000000; \u53ea\u80fd\u5728\u5b58\u50a8\u8fc7\u7a0b\u91cc\u9762\u58f0\u660e\u53d8\u91cf<\/pre>\n
 <\/p>\n
 <\/p>\n
IN\u53c2\u6570\u4f8b\u5b50\uff1a<\/p>\n
mysql > DELIMITER \/\/ \r\nmysql > CREATE PROCEDURE demo_in_parameter(IN p_in int) \r\n     -> BEGIN \r\n\u00a0    -> SELECT p_in;  --\u63a5\u6536\u5e76\u8f93\u51fa\u5916\u6765\u53d8\u91cf\r\n     -> SET p_in=2; \r\n     -> SELECT p_in;  --\u8f93\u51fa\u4fee\u6539\u540e\u7684p_in\u503c\uff0c\u4f46\u662f\u4e0d\u4f1a\u5f71\u54cd\u5168\u5c40\u53d8\u91cf\u4e2d\u7684p_in\u503c\r\n     -> END; \r\n     -> \/\/ \r\nmysql > DELIMITER ;<\/pre>\n
 <\/p>\n
\u7ed3\u679c\uff1a<\/p>\n
1. mysql > SET @p_in=1; --\u5916\u6765\u7684\u5168\u5c40\u53d8\u91cf\r\n2. mysql > CALL demo_in_parameter(@p_in); --\u4f20\u5165\u5916\u6765\u53d8\u91cf\r\n3. +------+ \r\n4. | p_in | \r\n5. +------+ \r\n6. | 1 |      --IN\u7684\u53c2\u6570\u63a5\u6536\u5916\u6765\u53d8\u91cf\uff0c\u5e76\u8f93\u51fa\r\n7. +------+ \r\n8. \r\n9. +------+ \r\n10.| p_in | \r\n11.+------+ \r\n12.| 2 |      --\u5728\u5b58\u50a8\u8fc7\u7a0b\u53ef\u4ee5\u4fee\u6539\u5916\u6765\u53d8\u91cf\u503c,\u4ec5\u4ec5\u5728\u5b58\u50a8\u8fc7\u7a0b\u6709\u6548\r\n13.+------+ \r\n14. \r\n15.mysql> SELECT @p_in; \r\n16.+-------+ \r\n17.| @p_in | \r\n18.+-------+ \r\n19.| 1 |      --IN\u7684\u53c2\u6570\uff0c\u5728\u5b58\u50a8\u8fc7\u7a0b\u91cc\u9762\u4fee\u6539\u4e0d\u4f1a\u5f71\u54cd\u5230\u5168\u5c40\u4e2d\u7684\u539f\u6765\u503c\r\n20.+-------+<\/pre>\n
 <\/p>\n
 <\/p>\n
OUT\u53c2\u6570\u4f8b\u5b50\uff1a<\/p>\n
mysql > DELIMITER \/\/ \r\nmysql > CREATE PROCEDURE demo_out_parameter(OUT p_out int) \r\n     -> BEGIN \r\n     -> SELECT p_out;  --OUT\u7684\u53c2\u6570\uff0c\u4e0d\u63a5\u6536\u5916\u9762\u4f20\u6765\u7684\u53c2\u6570\u8fd4\u56de\u4e00\u4e2aNULL\r\n     -> SET p_out=2;   --\u4f46\u53ef\u4ee5\u5728\u5185\u90e8\u5f7b\u5e95\u4fee\u6539\u5916\u9762\u5168\u5c40\u53d8\u91cf\u7684\u503c\r\n     -> SELECT p_out;  --\u88ab\u4fee\u6539\u5916\u9762\u5168\u5c40\u53d8\u91cf\u7684\u503c\u4f1a\u88ab\u5f71\u54cd\u8986\u76d6\r\n     -> END; \r\n     -> \/\/ \r\nmysql > DELIMITER ;<\/pre>\n
 <\/p>\n
\u7ed3\u679c\uff1a<\/p>\n
1. mysql > SET @p_out=1; \r\n2. mysql > CALL demo_out_parameter(@p_out); \r\n3. +-------+ \r\n4. | p_out | \r\n5. +-------+ \r\n6. | NULL |   --OUT\u53c2\u6570\u4e0d\u4f1a\u63a5\u6536\u548c\u8f93\u51fa\u5916\u6765\u53d8\u91cf\u7684\u503c\r\n7. +-------+ \r\n8. \r\n9. +-------+ \r\n10.| p_out | \r\n11.+-------+ \r\n12.| 2 |      --\u4f46\u53ef\u4ee5\u4fee\u6539\u5f71\u54cd\u5168\u5c40\u53d8\u91cf\u7684\u503c\r\n13.+-------+ \r\n14. \r\n15.mysql> SELECT @p_out; \r\n16.+-------+ \r\n17.| p_out | \r\n18.+-------+ \r\n19.| 2 |      --OUT\u53c2\u6570\u53ef\u4ee5\u76f4\u63a5\u5f71\u54cd\u5168\u5c40\u53d8\u91cf\u7684\u503c\r\n20.+-------+<\/pre>\n
 <\/p>\n
 <\/p>\n
INOUT\u53c2\u6570\u4f8b\u5b50<\/p>\n
mysql > DELIMITER \/\/ \r\nmysql > CREATE PROCEDURE demo_inout_parameter(INOUT p_inout int) \r\n     -> BEGIN \r\n     -> SELECT p_inout;  --\u80fd\u63a5\u6536\uff0c\u5e76\u8f93\u51fa\u5916\u6765\u53d8\u91cf\r\n     -> SET p_inout=2; \r\n     -> SELECT p_inout;  --\u8fd8\u80fd\u76f4\u63a5\u4fee\u6539\u5f71\u54cd\u5916\u6765\u53d8\u91cf\r\n     -> END; \r\n     -> \/\/ \r\nmysql > DELIMITER ;<\/pre>\n
 <\/p>\n
\u7ed3\u679c\uff1a<\/p>\n
1. mysql > SET @p_inout=1; \r\n2. mysql > CALL demo_inout_parameter(@p_inout) ; \r\n3. +---------+ \r\n4. | p_inout | \r\n5. +---------+ \r\n6. | 1 |        --\u63a5\u6536\u5e76\u8f93\u51fa\r\n7. +---------+ \r\n8. \r\n9. +---------+ \r\n10.| p_inout | \r\n11.+---------+ \r\n12.| 2 | \r\n13.+---------+ \r\n14. \r\n15.mysql > SELECT @p_inout; \r\n16.+----------+ \r\n17.| @p_inout | \r\n18.+----------+ \r\n19.| 2 |        --\u76f4\u63a5\u4fee\u6539\u5f71\u54cd\u5916\u6765\u53d8\u91cf\r\n20.+----------+<\/pre>\n
 <\/p>\n
 <\/p>\n
 <\/p>\n
\u7efc\u5408\u6848\u4f8b\uff1a<\/p>\n
<\/div>
<\/div><\/div><\/div>\"https:\/\/sdeno.com\/wp-content\/uploads\/2018\/07\/mysql_.jpg\"<\/figure>\n
 <\/p>\n
DELIMITER \/\/ --\u8bf4\u660e\u5f00\u59cb\u5199\u5b58\u50a8\u8fc7\u7a0b\r\nCREATE PROCEDURE proc2(IN parameter1 INTEGER) --\u58f0\u660e\u5b58\u50a8\u8fc7\u7a0b\u540d\u4e3aproc2\uff0c\u53c2\u6570\u540dparameter1\uff0c\u7c7b\u578bINTEGER\uff0c\u53c2\u6570\u7c7b\u578bIN\r\nBEGIN --\u5f00\u59cb\u5199\u903b\u8f91\r\nDECLARE variable1 CHAR(10); --\u58f0\u660e\u5b58\u50a8\u8fc7\u7a0b\u91cc\u9762\u7684\u5185\u90e8\u53d8\u91cf\u540d\u4e3avariable1\uff0c\u6ce8\u610f\u52a0\u5206\u53f7;\r\nIF parameter1 = 17 THEN --if\u6761\u4ef6\u5224\u65ad\r\nSET variable1 = 'birds'; --\u4e3a\u4e4b\u524d\u7684\u53d8\u91cf\u8d4b\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528SET\r\nELSE\r\nSET variable1 = 'beasts';\r\nEND IF; --if\u6761\u4ef6\u7ed3\u675f,\u52a0\u5206\u53f7;\r\ninsert into liuyan_user(liuyan_username) values (variable1);\r\nEND; --\u903b\u8f91\u7ed3\u675f\r\n\/\/\r\nDELIMITER ; --\u5b58\u50a8\u8fc7\u7a0b\u7ed3\u675f\r\n\r\nset @xx1=17; --\u58f0\u660e\u5168\u5c40\u53d8\u91cf,\u4e5f\u53ef\u4ee5\u5728\u5b58\u50a8\u8fc7\u7a0b\u91cc\u9762\u58f0\u660e\u4f46\u4e0d\u9700\u8981\u52a0@\r\nCALL proc2(@xx1); --\u8c03\u7528\u5b58\u50a8\u8fc7\u7a0b<\/pre>\n
 <\/p>\n
\u7ed3\u679c\uff1a<\/p>\n
<\/div>
<\/div><\/div><\/div>\"https:\/\/sdeno.com\/wp-content\/uploads\/2018\/07\/mysql_2.jpg\"<\/figure>\n
 <\/p>\n
 <\/p>\n
 <\/p>\n
\u4e00\u4e9b\u7b80\u5355\u6848\u4f8b\uff1a\uff08\u4e3b\u8981\u5b66\u4e60\u58f0\u660e\u5b58\u50a8\u8fc7\u7a0b\u8fd8\u6709\u54ea\u4e9b\u65b9\u5f0f\uff09<\/p>\n
mysql > CREATE PROCEDURE GreetWorld( ) SELECT CONCAT(@greeting,' World'); \r\nmysql > SET @greeting='Hello'; \r\nmysql > CALL GreetWorld( ); \r\n +----------------------------+ \r\n  | CONCAT(@greeting,' World') | \r\n  +----------------------------+ \r\n  | Hello World | \r\n  +----------------------------+<\/pre>\n
 <\/p>\n
 <\/p>\n
mysql> CREATE PROCEDURE p1() SET @last_procedure='p1'; \r\nmysql> CREATE PROCEDURE p2() SELECT CONCAT('Last procedure was ',@last_procedure); \r\nmysql> CALL p1( ); \r\nmysql> CALL p2( ); \r\n +-----------------------------------------------+ \r\n | CONCAT('Last procedure was ',@last_proc | \r\n +-----------------------------------------------+ \r\n | Last procedure was p1 | \r\n +-----------------------------------------------+<\/pre>\n
 <\/p>\n
 <\/p>\n
 <\/p>\n
\u5b58\u50a8\u8fc7\u7a0b\u5c40\u90e8\u53d8\u91cf\uff1a<\/span>\uff08\u53ea\u80fd\u5728\u5b58\u50a8\u8fc7\u7a0b\u4e2d\u58f0\u660e\uff09<\/p>\n
DECLARE l_int int unsigned default 4000000; \r\nDECLARE l_numeric number(8,2) DEFAULT 9.95; \r\nDECLARE l_date date DEFAULT '1999-12-31'; \r\nDECLARE l_datetime datetime DEFAULT '1999-12-31 23:59:59'; \r\nDECLARE l_varchar varchar(255) DEFAULT 'This will not be padded';<\/pre>\n
 <\/p>\n
 <\/p>\n
\u6761\u4ef6\uff1a<\/span><\/p>\n
-> if parameter=0 then \r\n-> ...\r\n-> else \r\n-> ...\r\n-> end if;<\/pre>\n
 <\/p>\n
 <\/p>\n
\u5faa\u73af\uff1a<\/span><\/p>\n
while<\/p>\n
\u00a0-> declare var int; \r\n -> set var=0; \r\n -> while var<6 do --\u6ca1\u5206\u53f7\r\n -> insert into t values(var); \r\n -> set var=var+1; \r\n -> end while;<\/pre>\n
 <\/p>\n
repeat…until<\/p>\n
 -> declare v int; \r\n -> set v=0; \r\n -> repeat  --\u6ca1\u5206\u53f7\r\n -> insert into t values(v); \r\n -> set v=v+1; \r\n -> until v>=5  --\u6ca1\u5206\u53f7\r\n -> end repeat;<\/pre>\n
 <\/p>\n
loop \u00b7\u00b7\u00b7\u00b7\u00b7endloop<\/p>\n
\u8fd9\u4e2a\u5faa\u73af\u7684\u597d\u5904\u5c31\u662f\u6709\u7c7b\u4f3c\u4e8econtiune\u548cbreak\u7684\u529f\u80fd\u3002<\/p>\n
\u00a0->declare v int; \r\n -> set v=0; \r\n -> LOOP_LABLE:loop \r\n -> insert into t values(v); \r\n -> set v=v+1; \r\n -> if v >=5 then \r\n -> leave LOOP_LABLE; --\u53ea\u6709v >=5\u5c31\u9000\u51fa\u5faa\u73af\uff0c\u7c7b\u4f3c\u4e8ebreak\r\n -> end if; \r\n -> end loop;<\/pre>\n
 <\/p>\n
 -> declare v int; \r\n -> set v=0; \r\n -> LOOP_LABLE:loop \r\n -> if v=3 then \r\n -> set v=v+1; \r\n -> ITERATE LOOP_LABLE;  --\u8df3\u8fc7v=3\u7684\u6b65\u9aa4\uff0c\u7c7b\u4f3ccontiune\r\n -> end if; \r\n -> insert into t values(v); \r\n -> set v=v+1; \r\n -> if v>=5 then \r\n -> leave LOOP_LABLE; \r\n -> end if; \r\n -> end loop;<\/pre>\n
 <\/p>\n
https:\/\/blog.csdn.net\/a__yes\/article\/details\/52795793<\/a><\/p>\n
\u4f18\u5316\uff1a 1\uff0c\u5c06\u4e00\u4e9b\u4e1a\u52a1\u903b\u8f91\u653e\u5728\u6570\u636e\u5e93\u91cc\u5224\u65ad\uff0c\u6267\u884c\u6548\u7387\u5feb\u3002 2\uff0c\u7a0b\u5e8f\u8bed\u8a00\u7684\u79fb\u690d\u4e5f\u65b9\u4fbf\u3002\u4f8b\u5982php\u8f6cjava\uff0c\u7b49\u7b49 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30,9],"tags":[],"class_list":["post-6746","post","type-post","status-publish","format-standard","hentry","category-php","category-9"],"_links":{"self":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts\/6746","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6746"}],"version-history":[{"count":0,"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts\/6746\/revisions"}],"wp:attachment":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6746"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6746"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}