按成员MEMBER添加日志文件LOGFILE到组GROUP并作出相关查询:ALTER DATABASE ADD LOGFILE MEMBER 'log3a.log' TO Group 4; SQL> ALTER DATABASE ADD LOGFILE MEMBER 'log3a.log' TO Group 4; Database altered 重新查询logfile日志文件: SQL> select * from v$logfile; GROUP# STATUS TYPE MEMBER IS_RECOVERY_DES...
SQL >SPOOL ON.SQL SQL >SELECT ‘ALTER VIEW ‘||TNAME||’ COMPILE;’ FROM TAB; SQL >SPOOL OFF 然后执行ON.SQL即可。 SQL >@ON.SQL 当然,授权和创建同义词也可以快速进行,如: SQL >SELECT ‘GRANT SELECT ON ’ ||TNAME||’ TO USERNAME;’ FROM TAB; SQL >SELECT ‘CREATE SYNONYM ‘||TNA...
In SQLcl, you can also use ";" to list all the lines in the SQL buffer. The buffer has no command history list and does not record SQLcl commands. Use the following commands to run scripts: @ { url | file_name[.ext] } [arg ...] Runs the SQLcl statements in the specified ...
Use the SQL*Plus COPY command to copy CHAR, DATE, LONG, NUMBER or VARCHAR2 data between databases and between tables on the same database. With the COPY command, you can copy data between databases in the following ways: Copy data from a remote database to your local database. ...
The SELECT statement specifies local aliases for the tables to distinguish the same field name, Cust_ID, in both tables.複製 CLOSE ALL CLOSE DATABASES OPEN DATABASE (HOME(2) + 'Data\TestData') SELECT DISTINCT TAlias1.company, TAlias2.order_date, ; TAlias2.shipped_on ; FROM customer ...
When you use SQL SELECT to create a query, Visual FoxPro parses the query and retrieves the specified data from the tables. You can create a SQL SELECT query from the Command window, in a Visual FoxPro program, or using the Query Designer. Please review the Considerations for SQL SELECT ...
case SQLCOM_UNLOCK_TABLES: if (thd->variables.option_bits & OPTION_TABLE_LOCK) { /* Can we commit safely? If not, return to avoid releasing transactional metadata locks. */ if (trans_check_state(thd)) DBUG_RETURN(-1); ... trans_check_state returns TRUE iff we are either in a ...
Guelphdad's advice is probably best and no you cannot have dynamic tables names in a prepared statement but you can dynamically generate and execute a statement in a stored procedure. This link may get you started http://forge.mysql.com/snippets/view.php?id=13...
Specifies conditions on which tables in a SQL SELECT statement are joined or results are filtered. Join conditions can also include filter conditions. For multiple join or filter conditions, you must use the AND or OR operator to connect those conditions. You can include subqueries and nested sub...
The SHOW TABLES SQL command is used to display all the tables in a MySQL database to make formatting easier. Formatting is vital to database use.