If the user has update permission on table A, but only has select permission on table B, they cannot update via the first example. Oracle will return ORA-01031 (insufficient privileges). 测试一下: SQL> create user x identified by x; SQL> grant create session on x; SQL> grant select,up...
SELECT translate('我是中国人,我爱中国', '中国', 'China') "Translate example" FROM dual; 5、通用函数 If –then–else 逻辑 31、 nvl(value,str)函数 如果第一个参数不是null,返回的就是第一个参数,如果第一个为null,就返回第二个参数 update employees t set t.empcity ='' where t.employeeid...
Example:又用户输入员工号修改员工工资如成功则打印输出成功标志。 为了尽量不改变原表,创建新表emp_new和原表数据相同: CREATE TABLE emp_new AS SELECT * FROM emp; BEGIN UPDATE emp_new SET sal = sal+500 WHERE empno=&empno; IF SQL%FOUND THEN DBMS_OUTPUT.PUT_LINE('成功修改'); COMMIT; ELSE DBM...
数据泵导入需要 dmp 文件才可以,执行 insert 语句插入需要 .sql 文件才行,当然外部表的形式也可以,但外部表没法编辑且文件位于数据库外,不能 update 编辑数据则考虑 sqlldr 直接加载到 Oracle 数据库中更为方便。 SQL*Loader 原理 将外部数据(比如文本型)导入Oracle 数据库中。(可用于不同类型数据库数据迁移)本质...
在MyBatis的映射文件中,我们需要定义一个<update>标签来执行上面的批量更新SQL语句。 <mapper namespace="com.example.YourMapper"> <update id="batchUpdate" parameterType="java.util.List"> DECLARE TYPE t_update_data IS TABLE OF your_table.column%TYPE INDEX BY PLS_INTEGER; ...
This entry was posted inMERGE,Oracle,SQLand tagged23ai,dml restart,Merge,ORA-14359,ORA-30926on21. April 2025. Hybrid Columnar Compression (HCC) in Oracle Exadata is a prime example of how physical infrastructure can significantly enhance the efficiency of data management and analysis—when used co...
Node.js, Go, PHP and Ruby, as well as providing access for Oracle Call Interface (OCI), Oracle C++ Call Interface (OCCI), JDBC OCI, ODBC and Pro*C applications. Tools included in Instant Client, such as SQL*Plus, SQL*Loader and Oracle Data Pump, provide quick and convenient data acces...
For example:sqlplus replication/$tr0ngPasswerd@Oracle90Server If the networking configuration was successful, the login will succeed and you will see aSQLprompt. Considerations for Oracle Home Oracle supports side-by-side installation of application binaries, but only one set of binaries can be use...
For example: sqlplus replication/$tr0ngPasswerd@Oracle90Server If the networking configuration was successful, the login succeeds and you will see a SQL prompt. If you experience problems connecting to the Oracle database, see the section "The SQL Server Distributor cannot connect to the Oracle ...
--第一部分:SQL基础 --ch1 简单查询 --ch2 查询基本概念 --ch3 数据过滤 --第二部分:多表操作 --ch4 集合理论 --ch5 内连接 --ch6 外连接 --ch7 子查询 --第三部分:数据分组 --ch8 简单统计 --ch9 数据分组 --ch10 分组数据过滤 --第四部分:SQL函数 --ch11 内置函数 --ch12 case表达式 ...