在SQL Server中使用REPLACE函数时,可以实现字符串替换的功能。REPLACE函数接受三个参数:原始字符串、要替换的子字符串和替换后的字符串。它会在原始字符串中查找所有匹配的子字符串,并将其替换为指定的字符串。 REPLACE函数的语法如下: 代码语言:txt 复制
使用场景2 – (update语句): 需求:把"hero_title"字段中所有的"A"去掉,SQL如下: UPDATELOLSET hero_title=REPLACE(hero_title,‘A’,’’); 代码语言:javascript 代码运行次数:0 运行 AI代码解释 mysql>UPDATE`LOL`SEThero_title=REPLACE(hero_title,'A','');QueryOK,2rowsaffected(0.05sec)Rows matched:...
+---+---+---+ 3 rows in set UPDATE语句的确按照预期更新了数据。 之后,使用REPLACE声明将洛杉矶市的人口更新为3696820。 REPLACE INTO cities(id,population) VALUES(2,3696820); Query OK, 2 rows affected 上面执行返回结果中提示:2 rows affected,说明有两行数据受影响。 最后,再次查询城市表的数据来验...
Final Thoughts on How to Perform a Search and Replace in SQL In this blog, we learned how to update a string in a table column using a four step process. By building up the query as a series of SELECT statements, we can minimize the risk of inadvertently changing data that we did not...
obclient>REPLACEINTOtestVALUES(3,'hello alibaba'),(2,'hello oceanbase');QueryOK,3rows affectedRecords:2Duplicates:1Warnings:0 查看test表中的行一、行二和行三的内容。 obclient>SELECT*FROMtest;+---+---+|c1|c2|+---+---+|1|hello alibaba||2|hello oceanbase||3|hello alibaba|+---+--...
7 rows in set (0.00 sec) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 使用场景1 – (Query语句): 需求:把"hero_title"字段中所有的"之"换成" - "来展示,SQL如下: SELECTREPLACE(hero_title,'之',' - ')as repl_title,hero_name,price from LOL; ...
1.2. IN in 是 ANY 的一种特殊情况: "in" equals "= any" [root@mysql.sock][dbt3_s1]> insert into t1 values(5); Query OK, 1 row affected (0.26 sec) [root@mysql.sock][dbt3_s1]> select a from t1wherea = ANY(select a from t2); ...
(c3); Query OK, 3 rows affected (0.03 sec) Records: 2 Duplicates: 1 Warnings: 0 OceanBase (root@test)> select * from test_replace; +---+---+---+ | c1 | c2 | c3 | +---+---+---+ | 1 | 2 | 3 | | 4 | 7 | 8 | | 5 | 8 | 9 | +---+---+---+ 3 rows...
---TRANSACTION 1873, ACTIVE 3 sec insertingmysql tables in use 1, locked 1LOCK WAIT 3 lock struct(s), heap size 1136, 2 row lock(s), undo log entries 1MySQL thread id 1155, OS thread handle 139646312843008, query id 117 localhost msandbox updatereplace into ix(a,b) values(8,10)-...
1 row in set (0.00 sec) mysql> (2)replace mysql> replace intot(id, num)values(1,101); Query OK, 2 rows affected (0.01 sec) mysql> select * from t; +---+---+ | id | num | +---+---+ | 1 | 101 | +---+---...