{"id":316077,"date":"2024-01-20T10:16:23","date_gmt":"2024-01-20T02:16:23","guid":{"rendered":"https:\/\/www.idc.net\/help\/316077\/"},"modified":"2024-01-20T10:16:23","modified_gmt":"2024-01-20T02:16:23","slug":"mysql%e6%95%b0%e6%8d%ae%e5%ba%93%ef%bc%8c%e4%b8%8d%e5%be%97%e4%b8%8d%e7%9c%8b","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/316077\/","title":{"rendered":"MySQL\u6570\u636e\u5e93\uff0c\u4e0d\u5f97\u4e0d\u770b"},"content":{"rendered":"

MySQL\u6570\u636e\u5e93\u4e00\u822c\u5e94\u7528\u4e8e\u4e2d\u5c0f\u4f01\u4e1a\uff0c\u5176\u4e0d\u4ec5\u5177\u6709\u5f00\u6e90\u6027\uff0c\u8fd8\u5177\u6709\u5f88\u597d\u7684\u7ba1\u7406\u7279\u6027\uff0c\u6211\u4eec\u4eca\u5929\u5c31\u662f\u5bf9MySQL\u6570\u636e\u5e93\u7684\u76f8\u5173\u5185\u5bb9\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u9996\u5148\u662f\u4ece\u542f\u52a8\uff1anet start mySql; \u5f00\u59cb\u7684\uff0c\u4ee5\u4e0b\u5c31\u662f\u6587\u7ae0\u7684\u4e3b\u8981\u5185\u5bb9\u3002<\/p>\n

\u542f\u52a8\uff1anet start mySql;<\/p>\n

 <\/p>\n

\u8fdb\u5165\uff1aMySQL-u root -p\/MySQL-h localhost -u root -p databaseName;<\/p>\n

 <\/p>\n

\u5217\u51fa\u6570\u636e\u5e93\uff1ashow databases;<\/p>\n

 <\/p>\n

\u9009\u62e9\u6570\u636e\u5e93\uff1ause databaseName;<\/p>\n

 <\/p>\n

\u5217\u51fa\u8868\u683c\uff1ashow tables\uff1b<\/p>\n

 <\/p>\n

\u663e\u793a\u8868\u683c\u5217\u7684\u5c5e\u6027\uff1ashow columns from tableName\uff1b<\/p>\n

 <\/p>\n

\u5efa\u7acb\u6570\u636e\u5e93\uff1asource fileName.txt;<\/p>\n

 <\/p>\n

\u5339\u914d\u5b57\u7b26\uff1a\u53ef\u4ee5\u7528\u901a\u914d\u7b26_\u4ee3\u8868\u4efb\u4f55\u4e00\u4e2a\u5b57\u7b26\uff0c\uff05\u4ee3\u8868\u4efb\u4f55\u5b57\u7b26\u4e32;<\/p>\n

 <\/p>\n

\u589e\u52a0\u4e00\u4e2a\u5b57\u6bb5\uff1a<\/p>\n

\n \n \n 
    \n  \n  \n  
  1. alter table tabelName add column fieldName dateType; <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
     <\/p>\n
    \u589e\u52a0\u591a\u4e2a\u5b57\u6bb5\uff1a<\/p>\n
    \n \n \n 
      \n  \n  \n  
    1. alter table tabelName add column fieldName1 dateType,add columns fieldName2 dateType; <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
       <\/p>\n
      \u591a\u884c\u547d\u4ee4\u8f93\u5165:\u6ce8\u610f\u4e0d\u80fd\u5c06\u5355\u8bcd\u65ad\u5f00;\u5f53\u63d2\u5165\u6216\u66f4\u6539\u6570\u636e\u65f6\uff0c\u4e0d\u80fd\u5c06\u5b57\u6bb5\u7684\u5b57\u7b26\u4e32\u5c55\u5f00\u5230\u591a\u884c\u91cc\uff0c\u5426\u5219\u786c\u56de\u8f66\u5c06\u88ab\u50a8\u5b58\u5230\u6570\u636e\u4e2d;<\/p>\n
       <\/p>\n
      \u589e\u52a0\u4e00\u4e2a\u7ba1\u7406\u5458\u5e10\u6237\uff1a<\/p>\n
      \n \n \n 
        \n  \n  \n  
      1. grant all on *.* to user@localhost identified by \"password\"; <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
         <\/p>\n
        \u6bcf\u6761\u8bed\u53e5\u8f93\u5165\u5b8c\u6bd5\u540e\u8981\u5728\u672b\u5c3e\u586b\u52a0\u5206\u53f7';'\uff0c\u6216\u8005\u586b\u52a0'\\g'\u4e5f\u53ef\u4ee5\uff1b<\/p>\n
         <\/p>\n
        \u67e5\u8be2\u65f6\u95f4\uff1aselect now();<\/p>\n
         <\/p>\n
        \u67e5\u8be2\u5f53\u524d\u7528\u6237\uff1aselect user();<\/p>\n
         <\/p>\n
        \u67e5\u8be2\u6570\u636e\u5e93\u7248\u672c\uff1aselect version();<\/p>\n
         <\/p>\n
        \u67e5\u8be2\u5f53\u524d\u4f7f\u7528\u7684\u6570\u636e\u5e93\uff1aselect database();<\/p>\n
         <\/p>\n
         <\/p>\n
        1\u3001\u5220\u9664student_course\u6570\u636e\u5e93\u4e2d\u7684students\u6570\u636e\u8868\uff1a<\/p>\n
         <\/p>\n
         <\/p>\n
        \n \n \n 
          \n  \n  \n  
        1. rm -f student_course\/students.*  <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
           <\/p>\n
           <\/p>\n
          2\u3001\u5907\u4efd\u6570\u636e\u5e93\uff1a(\u5c06\u6570\u636e\u5e93test\u5907\u4efd)<\/p>\n
           <\/p>\n
           <\/p>\n
          \n \n \n 
            \n  \n  \n  
          1. mysqldump -u root -p test<\/span>><\/span>c:\\test.txt  <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
             <\/p>\n
            \u5907\u4efd\u8868\u683c\uff1a(\u5907\u4efdtest\u6570\u636e\u5e93\u4e0b\u7684mytable\u8868\u683c)<\/p>\n
             <\/p>\n
             <\/p>\n
            \n \n \n 
              \n  \n  \n  
            1. mysqldump -u root -p test mytable<\/span>><\/span>c:\\test.txt  <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
               <\/p>\n
              \u5c06\u5907\u4efd\u6570\u636e\u5bfc\u5165\u5230\u6570\u636e\u5e93\uff1a(\u5bfc\u56detest\u6570\u636e\u5e93)<\/p>\n
               <\/p>\n
               <\/p>\n
              \n \n \n 
                \n  \n  \n  
              1. mysql -u root -p test  <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
                 <\/p>\n
                 <\/p>\n
                3\u3001\u521b\u5efa\u4e34\u65f6\u8868\uff1a(\u5efa\u7acb\u4e34\u65f6\u8868zengchao)<\/p>\n
                 <\/p>\n
                 <\/p>\n
                \n \n \n 
                  \n  \n  \n  
                1. create temporary table zengchao(name varchar(10));  <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
                   <\/p>\n
                   <\/p>\n
                  4\u3001\u521b\u5efa\u8868\u662f\u5148\u5224\u65ad\u8868\u662f\u5426\u5b58\u5728<\/p>\n
                   <\/p>\n
                   <\/p>\n
                  \n \n \n 
                    \n  \n  \n  
                  1. create table if not exists students(\u2026\u2026);  <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
                     <\/p>\n
                     <\/p>\n
                    5\u3001\u4ece\u5df2\u7ecf\u6709\u7684\u8868\u4e2d\u590d\u5236\u8868\u7684\u7ed3\u6784<\/p>\n
                     <\/p>\n
                     <\/p>\n
                    \n \n \n 
                      \n  \n  \n  
                    1. create table table2 select * from table1 where 1<\/span><<\/span>><\/span>1;  <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
                       <\/p>\n
                       <\/p>\n
                      6\u3001\u590d\u5236\u8868<\/p>\n
                       <\/p>\n
                       <\/p>\n
                      \n \n \n 
                        \n  \n  \n  
                      1. create table table2 select * from table1;  <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
                         <\/p>\n
                         <\/p>\n
                        7\u3001\u5bf9\u8868\u91cd\u65b0\u547d\u540d<\/p>\n
                         <\/p>\n
                         <\/p>\n
                        \n \n \n 
                          \n  \n  \n  
                        1. alter table table1 rename as table2;  <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
                           <\/p>\n
                           <\/p>\n
                          8\u3001\u4fee\u6539\u5217\u7684\u7c7b\u578b<\/p>\n
                           <\/p>\n
                           <\/p>\n
                          \n \n \n 
                            \n  \n  \n  
                          1. alter table table1 modify id int unsigned; <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
                            \u4fee\u6539\u5217id\u7684\u7c7b\u578b\u4e3aint unsigned<\/p>\n
                             <\/p>\n
                             <\/p>\n
                            \n \n \n 
                              \n  \n  \n  
                            1. alter table table1 change id sid int unsigned; <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
                              \u4fee\u6539\u5217id\u7684\u540d\u5b57\u4e3asid\uff0c\u800c\u4e14\u628a\u5c5e\u6027\u4fee\u6539\u4e3aint unsigned<\/p>\n
                               <\/p>\n
                               <\/p>\n
                              9\u3001\u521b\u5efa\u7d22\u5f15<\/p>\n
                               <\/p>\n
                               <\/p>\n
                              \n \n \n 
                                \n  \n  \n  
                              1. alter table table1 add index ind_id (id);   <\/span><\/span><\/li>\n  \n  \n  
                              2. create index ind_id on table1 (id);   <\/span><\/li>\n  \n  \n  
                              3. create unique index ind_id on table1 (id);  <\/span><\/li>\n \n \n <\/ol><\/pre>\n
                                 <\/p>\n
                                \u5efa\u7acb\u552f\u4e00\u6027\u7d22\u5f15<\/p>\n
                                 <\/p>\n
                                 <\/p>\n
                                10\u3001\u5220\u9664\u7d22\u5f15<\/p>\n
                                 <\/p>\n
                                 <\/p>\n
                                \n \n \n 
                                  \n  \n  \n  
                                1. drop index idx_id on table1;   <\/span><\/span><\/li>\n  \n  \n  
                                2. alter table table1 drop index ind_id;  <\/span><\/li>\n \n \n <\/ol><\/pre>\n
                                   <\/p>\n
                                   <\/p>\n
                                   <\/p>\n
                                  11\u3001\u8054\u5408\u5b57\u7b26\u6216\u8005\u591a\u4e2a\u5217(\u5c06\u5217id\u4e0e\":\"\u548c\u5217name\u548c\"=\"\u8fde\u63a5)<\/p>\n
                                   <\/p>\n
                                   <\/p>\n
                                  \n \n \n 
                                    \n  \n  \n  
                                  1. select concat(id,':',name,'=') from students;  <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
                                     <\/p>\n
                                     <\/p>\n
                                    12\u3001limit(\u9009\u51fa10\u523020\u6761)<***\u4e2a\u8bb0\u5f55\u96c6\u7684\u7f16\u53f7\u662f0><\/p>\n
                                     <\/p>\n
                                     <\/p>\n
                                    \n \n \n 
                                      \n  \n  \n  
                                    1. select * from students order by id limit 9,10;  <\/span><\/span><\/li>\n \n \n <\/ol><\/pre>\n
                                       <\/p>\n
                                       <\/p>\n
                                      13\u3001MySQL\u4e0d\u652f\u6301\u7684\u529f\u80fd<\/p>\n
                                       <\/p>\n
                                      \u4e8b\u52a1\uff0c\u89c6\u56fe\uff0c\u5916\u952e\u548c\u5f15\u7528\u5b8c\u6574\u6027\uff0c\u5b58\u50a8\u8fc7\u7a0b\u548c\u89e6\u53d1\u5668<\/p>\n
                                       <\/p>\n
                                       <\/p>\n
                                       <\/p>\n
                                      14\u3001MySQL\u4f1a\u4f7f\u7528\u7d22\u5f15\u7684\u64cd\u4f5c\u7b26\u53f7<\/p>\n
                                       <\/p>\n
                                      <,<=,>=,>,=,between,in,\u4e0d\u5e26%\u6216\u8005_\u5f00\u5934\u7684like<\/p>\n
                                       <\/p>\n
                                       <\/p>\n
                                      15\u3001\u4f7f\u7528\u7d22\u5f15\u7684\u7f3a\u70b9<\/p>\n
                                       <\/p>\n
                                      1)\u51cf\u6162\u589e\u5220\u6539\u6570\u636e\u7684\u901f\u5ea6\uff1b<\/p>\n
                                       <\/p>\n
                                      2\uff09\u5360\u7528\u78c1\u76d8\u7a7a\u95f4\uff1b<\/p>\n
                                       <\/p>\n
                                      3\uff09\u589e\u52a0\u67e5\u8be2\u4f18\u5316\u5668\u7684\u8d1f\u62c5\uff1b<\/p>\n
                                       <\/p>\n
                                      \u5f53\u67e5\u8be2\u4f18\u5316\u5668\u751f\u6210\u6267\u884c\u8ba1\u5212\u65f6\uff0c\u4f1a\u8003\u8651\u7d22\u5f15\uff0c\u592a\u591a\u7684\u7d22\u5f15\u4f1a\u7ed9\u67e5\u8be2\u4f18\u5316\u5668\u589e\u52a0\u5de5\u4f5c\u91cf\uff0c\u5bfc\u81f4\u65e0\u6cd5\u9009\u62e9***\u7684\u67e5\u8be2\u65b9\u6848\uff1b<\/p>\n
                                       <\/p>\n
                                       <\/p>\n
                                      16\u3001\u5206\u6790\u7d22\u5f15\u6548\u7387 #p#<\/p>\n
                                       <\/p>\n
                                      \u65b9\u6cd5\uff1a\u5728\u4e00\u822c\u7684SQL\u8bed\u53e5\u524d\u52a0\u4e0aexplain\uff1b<\/p>\n
                                       <\/p>\n
                                      \u5206\u6790\u7ed3\u679c\u7684\u542b\u4e49\uff1a<\/p>\n
                                       <\/p>\n
                                      1\uff09table\uff1a\u8868\u540d\uff1b<\/p>\n
                                       <\/p>\n
                                      2\uff09type\uff1a\u8fde\u63a5\u7684\u7c7b\u578b\uff0c(ALL\/Range\/Ref)\u3002\u5176\u4e2dref\u662f\u6700\u7406\u60f3\u7684\uff1b<\/p>\n
                                       <\/p>\n
                                      3\uff09possible_keys\uff1a\u67e5\u8be2\u53ef\u4ee5\u5229\u7528\u7684\u7d22\u5f15\u540d\uff1b<\/p>\n
                                       <\/p>\n
                                      4\uff09key\uff1a\u5b9e\u9645\u4f7f\u7528\u7684\u7d22\u5f15\uff1b<\/p>\n
                                       <\/p>\n
                                      5\uff09key_len\uff1a\u7d22\u5f15\u4e2d\u88ab\u4f7f\u7528\u90e8\u5206\u7684\u957f\u5ea6\uff08\u5b57\u8282\uff09\uff1b<\/p>\n
                                       <\/p>\n
                                      6\uff09ref\uff1a\u663e\u793a\u5217\u540d\u5b57\u6216\u8005\"const\"\uff08\u4e0d\u660e\u767d\u4ec0\u4e48\u610f\u601d\uff09\uff1b<\/p>\n
                                       <\/p>\n
                                      7\uff09rows\uff1a\u663e\u793aMySQL\u8ba4\u4e3a\u5728\u627e\u5230\u6b63\u786e\u7ed3\u679c\u4e4b\u524d\u5fc5\u987b\u626b\u63cf\u7684\u884c\u6570\uff1b<\/p>\n
                                       <\/p>\n
                                      8\uff09extra\uff1aMySQL\u7684\u5efa\u8bae\uff1b<\/p>\n
                                       <\/p>\n
                                       <\/p>\n
                                      17\u3001\u4f7f\u7528\u8f83\u77ed\u7684\u5b9a\u957f\u5217<\/p>\n
                                       <\/p>\n
                                      1\uff09\u5c3d\u53ef\u80fd\u4f7f\u7528\u8f83\u77ed\u7684\u6570\u636e\u7c7b\u578b\uff1b<\/p>\n
                                       <\/p>\n
                                      2\uff09\u5c3d\u53ef\u80fd\u4f7f\u7528\u5b9a\u957f\u6570\u636e\u7c7b\u578b\uff1b<\/p>\n
                                       <\/p>\n
                                      a\uff09\u7528char\u4ee3\u66ffvarchar\uff0c\u56fa\u5b9a\u957f\u5ea6\u7684\u6570\u636e\u5904\u7406\u6bd4\u53d8\u957f\u7684\u5feb\u4e9b\uff1b<\/p>\n
                                       <\/p>\n
                                      b\uff09\u5bf9\u4e8e\u9891\u7e41\u4fee\u6539\u7684\u8868\uff0c\u78c1\u76d8\u5bb9\u6613\u5f62\u6210\u788e\u7247\uff0c\u4ece\u800c\u5f71\u54cd\u6570\u636e\u5e93\u7684\u6574\u4f53\u6027\u80fd\uff1b<\/p>\n
                                       <\/p>\n
                                      c\uff09\u4e07\u4e00\u51fa\u73b0\u6570\u636e\u8868\u5d29\u6e83\uff0c\u4f7f\u7528\u56fa\u5b9a\u957f\u5ea6\u6570\u636e\u884c\u7684\u8868\u66f4\u5bb9\u6613\u91cd\u65b0\u6784\u9020\u3002\u4f7f\u7528\u56fa\u5b9a\u957f\u5ea6\u7684\u6570\u636e\u884c\uff0c\u6bcf\u4e2a\u8bb0\u5f55\u7684\u5f00\u59cb\u4f4d\u7f6e\u90fd\u662f\u56fa\u5b9a\u8bb0\u5f55\u957f\u5ea6\u7684\u500d\u6570\uff0c\u53ef\u4ee5\u5f88\u5bb9\u6613\u88ab\u68c0\u6d4b\u5230\uff0c\u4f46\u662f\u4f7f\u7528\u53ef\u53d8\u957f\u5ea6\u7684\u6570\u636e\u884c\u5c31\u4e0d\u4e00\u5b9a\u4e86\uff1b<\/p>\n
                                       <\/p>\n
                                      d\uff09\u5bf9\u4e8eMyISAM\u7c7b\u578b\u7684\u6570\u636e\u8868\uff0c\u867d\u7136\u8f6c\u6362\u6210\u56fa\u5b9a\u957f\u5ea6\u7684\u6570\u636e\u5217\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u4f46\u662f\u5360\u636e\u7684\u7a7a\u95f4\u4e5f\u5927\uff1b<\/p>\n
                                       <\/p>\n
                                       <\/p>\n
                                      18\u3001\u4f7f\u7528not null\u548cenum<\/p>\n
                                       <\/p>\n
                                      \u5c3d\u91cf\u5c06\u5217\u5b9a\u4e49\u4e3anot null\uff0c\u8fd9\u6837\u53ef\u4f7f\u6570\u636e\u7684\u51fa\u6765\u66f4\u5feb\uff0c\u6240\u9700\u7684\u7a7a\u95f4\u66f4\u5c11\uff0c\u800c\u4e14\u5728\u67e5\u8be2\u65f6\uff0cMySQL\u4e0d\u9700\u8981\u68c0\u67e5\u662f\u5426\u5b58\u5728\u7279\u4f8b\uff0c\u5373null\u503c\uff0c\u4ece\u800c\u4f18\u5316\u67e5\u8be2\uff1b<\/p>\n
                                       <\/p>\n
                                      \u5982\u679c\u4e00\u5217\u53ea\u542b\u6709\u6709\u9650\u6570\u76ee\u7684\u7279\u5b9a\u503c\uff0c\u5982\u6027\u522b\uff0c\u662f\u5426\u6709\u6548\u6216\u8005\u5165\u5b66\u5e74\u4efd\u7b49\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u5e94\u8be5\u8003\u8651\u5c06\u5176\u8f6c\u6362\u4e3aenum\u5217\u7684\u503c\uff0cMySQL\u5904\u7406\u7684\u66f4\u5feb\uff0c\u56e0\u4e3a\u6240\u6709\u7684enum\u503c\u5728\u7cfb\u7edf\u5185\u90fd\u662f\u4ee5\u6807\u8bc6\u6570\u503c\u6765\u8868\u793a\u7684\uff1b<\/p>\n
                                       <\/p>\n
                                       <\/p>\n
                                      19\u3001\u4f7f\u7528optimize table<\/p>\n
                                       <\/p>\n
                                      \u5bf9\u4e8e\u7ecf\u5e38\u4fee\u6539\u7684\u8868\uff0c\u5bb9\u6613\u4ea7\u751f\u788e\u7247\uff0c\u4f7f\u5728\u67e5\u8be2\u6570\u636e\u5e93\u65f6\u5fc5\u987b\u8bfb\u53d6\u66f4\u591a\u7684\u78c1\u76d8\u5757\uff0c\u964d\u4f4e\u67e5\u8be2\u6027\u80fd\u3002\u5177\u6709\u53ef\u53d8\u957f\u7684\u8868\u90fd\u5b58\u5728\u78c1\u76d8\u788e\u7247\u95ee\u9898\uff0c\u8fd9\u4e2a\u95ee\u9898\u5bf9blob\u6570\u636e\u7c7b\u578b\u66f4\u4e3a\u7a81\u51fa\uff0c\u56e0\u4e3a\u5176\u5c3a\u5bf8\u53d8\u5316\u975e\u5e38\u5927\u3002\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528optimize table\u6765\u6574\u7406\u788e\u7247\uff0c\u4fdd\u8bc1\u6570\u636e\u5e93\u6027\u80fd\u4e0d\u4e0b\u964d\uff0c\u4f18\u5316\u90a3\u4e9b\u53d7\u788e\u7247\u5f71\u54cd\u7684\u6570\u636e\u8868\u3002 optimize table\u53ef\u4ee5\u7528\u4e8eMyISAM\u548cBDB\u7c7b\u578b\u7684\u6570\u636e\u8868\u3002\u5b9e\u9645\u4e0a\u4efb\u4f55\u788e\u7247\u6574\u7406\u65b9\u6cd5\u90fd\u662f\u7528mysqldump\u6765\u8f6c\u5b58\u6570\u636e\u8868\uff0c\u7136\u540e\u4f7f\u7528\u8f6c\u5b58\u540e\u7684\u6587\u4ef6\u5e76\u91cd\u65b0\u5efa\u6570\u636e\u8868\uff1b<\/p>\n
                                       <\/p>\n
                                       <\/p>\n
                                      20\u3001\u4f7f\u7528procedure analyse()<\/p>\n
                                       <\/p>\n
                                      \u53ef\u4ee5\u4f7f\u7528procedure analyse()\u663e\u793a***\u7c7b\u578b\u7684\u5efa\u8bae\uff0c\u4f7f\u7528\u5f88\u7b80\u5355\uff0c\u5728select\u8bed\u53e5\u540e\u9762\u52a0\u4e0aprocedure analyse()\u5c31\u53ef\u4ee5\u4e86\uff1b\u4f8b\u5982\uff1a<\/p>\n
                                       <\/p>\n
                                       <\/p>\n
                                      \n \n \n 
                                        \n  \n  \n  
                                      1. select * from students procedure analyse();  <\/span><\/span><\/li>\n  \n  \n  
                                      2. select * from students procedure analyse(16,256); <\/span><\/li>\n \n \n <\/ol><\/pre>\n
                                         <\/p>\n
                                        \u7b2c\u4e8c\u6761\u8bed\u53e5\u8981\u6c42procedure analyse()\u4e0d\u8981\u5efa\u8bae\u542b\u6709\u591a\u4e8e16\u4e2a\u503c\uff0c\u6216\u8005\u542b\u6709\u591a\u4e8e256\u5b57\u8282\u7684enum\u7c7b\u578b\uff0c\u5982\u679c\u6ca1\u6709\u9650\u5236\uff0c\u8f93\u51fa\u53ef\u80fd\u4f1a\u5f88\u957f\uff1b<\/p>\n
                                         <\/p>\n
                                         <\/p>\n","protected":false},"excerpt":{"rendered":"
                                        MySQL\u6570\u636e\u5e93\u4e00\u822c\u5e94\u7528\u4e8e\u4e2d\u5c0f\u4f01\u4e1a\uff0c\u5176\u4e0d\u4ec5\u5177\u6709\u5f00\u6e90\u6027\uff0c\u8fd8\u5177\u6709\u5f88\u597d\u7684\u7ba1\u7406\u7279\u6027\uff0c\u6211\u4eec\u4eca\u5929\u5c31\u662f\u5bf9MySQL\u6570\u636e\u5e93\u7684\u76f8 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7038],"tags":[],"class_list":["post-316077","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/316077","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=316077"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/316077\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=316077"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=316077"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=316077"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}