I started SQL recently as a beginner i came across the above problem. the book i referring is using MySQL and i want to know how can i do the following in SQL Server This is the query as per the example in the bookSELECT SUBSTRING_INDEX(location, ',', 1) FROM my_contacts;Thanks ...
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3 rows in set (0.00 sec) 这个select在mysql中得结果会自动按照id升序排列, 但是我想执行"select * from test where id in(3,1,5);"的结果按照in中得条件排序,即:3,1,5, 想得到的结果如下: id name 3 test3 1 test1 5 test5 请问在这样的SQL在Mysql中怎么写? 网上查到sqlserver中可以用order b...
代码语言:javascript 复制 #`**错误示范`**UPDATEtable_nameSET日期=(SELECTSUBSTRING_INDEX(日期,',',1)from table_name) 现实总是冰冷的 报错:You can't specify target table 'table_name' for update in FROM clause大致意思就是:MySQL不允许SELECT FROM后面指向用作UPDATE的表。 相关问题解释:https://blo...
⽹上查到sqlserver中可以⽤order by charindex解决,但是没看到Mysql怎么解决??请⾼⼿帮忙,谢 谢!select * from a order by substring_index('3,1,2',id,1);试下这个good,ls正解。order by find_in_set(id,'3,1,5')谢谢,经测试order by substring_index和order by find_in_set都可以 ...
Category:MySQL Server: OptimizerSeverity:S3 (Non-critical) Version:8.0.22, 8.0.17, 8.0.18OS:Any Assigned to:CPU Architecture:Any Tags:regression [20 Nov 2020 7:25] Baolin Huang Description:See a sql with group by/order by/rank: `name2` returns a wrong value '15'; In addition, when ...
Is it possible to use the substring_index function in a stored procedure ? The following code give the error message : ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') ...
SQL ReferencesSQL Keywords MySQL Functions String Functions: ASCII CHAR_LENGTH CHARACTER_LENGTH CONCAT CONCAT_WS FIELD FIND_IN_SET FORMAT INSERT INSTR LCASE LEFT LENGTH LOCATE LOWER LPAD LTRIM MID POSITION REPEAT REPLACE REVERSE RIGHT RPAD RTRIM SPACE STRCMP SUBSTR SUBSTRING SUBSTRING_INDEX TRIM ...
in set (0.01 sec) mysql> select i, substring_index(c, '.', -2) from t; +---+---+ | i | substring_index(c, '.', -2) | +---+---+ | 0 | mysql.com | | 1 | ysqlcom | +---+---+ 2 rows in set (0.00 sec) Here the second result value should be an empty st...
2.subString(int index ,int indey) 从index到indey(含尾不含⾸)的所有字符 String str="abcdef"; str.subString(2,3);--->返回结果 c 3.利⽤subString截取字符串内容 String str="abcdef"; str.subString(str.indexof("a"),str.indexof("c"));--->返回结果"abc"; Index 288 Transl. Neuros...