SQL> create table tbl_b(id number, a_id number, remark varchar2(1)); Table created. SQL> alter table tbl_a add constraint pk_tbl_a primary key(id); Table altered. SQL> alter table tbl_b add constraint pk_tbl_b primary key(id); Table altered. SQL> alter table tbl_b add constra...
Pl/SQL Truncate Table You should consider about using Truncate table statement in your Pl/SQL code. Truncate table have better performance but you cannot rollback data after truncate. Truncate table can be executed in combination with EXECUTE IMMEDIATE command in Pl/SQL code....
CREATE TABLE command creates a new table in the database. The following SQL creates a table called "Persons" that contains five columns: PersonID, LastName, FirstName, Address, and City:Example CREATE TABLE Persons ( PersonID int, LastName varchar(255), FirstName varchar(255), Address ...
How to find, when the login last used on SQL Server? How to forbid the TRUNCATE TABLE command? How to give a user permission to drop a table? how to give access to only views to a user. how to grant a user read
SQL> alter table t add constraint pk_t_id primary key (id); Table altered //建立字表m SQL> create table m (cid number, tid number, cname varchar2(100)); Table created SQL> alter table m add constraint pk_m_cid primary key (cid); ...
DROP TABLE TheDROP TABLEcommand deletes a table in the database. The following SQL deletes the table "Shippers": ExampleGet your own SQL Server DROPTABLEShippers; TRUNCATE TABLE TheTRUNCATE TABLEcommand deletes the data inside a table, but not the table itself....
SQL>truncate table tbl_a;Table truncated. 可以执行。 3. 向主表插入一条记录,再次执行truncate 代码语言:javascript 代码运行次数:0 运行 AI代码解释 SQL>insert into tbl_avalues(1,'a');1row created.SQL>commit;Commit complete.SQL>truncate table tbl_a;truncate table tbl_a*ERRORat line1:ORA-02266...
TRUNCATE statement: This command is used to delete all the rows from the table and free the space containing the table.SQL DROP Statement:The SQL DROP command is used to remove an object from the database. If you drop a table, all the rows in the table is deleted and the table ...
If the table is cached, the command clears cached data of the table and all its dependents that refer to it. The cache will be lazily filled when the table or the dependents are accessed the next time.SyntaxTRUNCATE TABLE table_name [ PARTITION clause ] ...
再次检查表TruncateTable --回滚之后再次检查TruncateTableSELECT*FROMTruncateTabelGO F5执行,如图: 参考:http://blog.sqlauthority.com/2010/03/04/sql-server-rollback-truncate-command-in-transaction/ --EOF-- Author:兴百放 Web:http://xbf321.cnblogs.com/ ...