代码语言:txt 复制 CREATE OR REPLACE PROCEDURE execute_alter_command IS BEGIN FOR rec IN (SELECT column_name FROM your_table) LOOP EXECUTE IMMEDIATE 'ALTER TABLE your_table MODIFY ' || rec.column_name || ' <your_alter_command>'; END LOOP; END; / 以上存储过程会循环遍历表 your_table ...
open * ERROR at line 1:ORA-00940: invalid ALTER command # 提交了无效的alter命令 问题排查中 ...
Understanding Oracle Database Error ORA-00940 The Oracle Database error codeORA-00940typically indicates that there is an issue with the SQL statement you are trying to execute. This error is specifically related to the use of invalid identifiers in your SQL command. The full error message usuall...
Note:trace filesare only readable by the Oracle account. If you want to change this, set the undocumented initialization parameter_trace_files_publicto true. Doing so will, however, cause abig security risk. alter system flush buffer_cache alter system flush buffer_cache; This command is not ...
Oracle Syntax ALTERTABLEtable_nameMODIFYCOLUMNcolumn_name datatype; Example Following query modifies datatype of SALARY column in MySQL CUSTOMERS table − ALTERTABLECUSTOMERSMODIFYCOLUMNIDDECIMAL(18,4); This will produce the following output − ...
(NEW in Oracle 9i Release 2) Syntax #1 Starting in Oracle 9i Release 2, you can now rename a column. To rename a column in an existing table, the ALTER TABLE syntax is: ALTER TABLE table_name RENAME COLUMN old_name to new_name; ...
Starting in Oracle 9i Release 2, you can now rename a column. To rename a column in an existing table, the ALTER TABLE syntax is: ALTER TABLE table_name RENAME COLUMN old_name to new_name; For example: ALTER TABLE supplier RENAME COLUMN supplier_name to sname; ...
This command is not available prior to 10g. It flushes the buffer cache in the SGA. 9i had an undocumented command to flush the buffer cache: set events = 'immediate trace name flush_cache'; 1. alter system flush shared_pool alter system flush shared_pool; ...
ORACLE试图将其转换成多个表的连接，如果转换不成功则先执行IN里面的子查询，再查询外层的表记录，如果转...
Oracle：立即执行中的ALTER命令无效你会得到'ALTER TRIGGERarticle_comment_auditENABLE'。插入空白：