在Oracle中排除LIKE条件中的某些字符,可以使用通配符和转义字符来实现。 通配符是用来匹配字符串中的任意字符的特殊字符。在Oracle中,通配符有两种:百分号(%)和下划线()。百分号(%)表示匹配任意长度的任意字符,下划线()表示匹配单个任意字符。 要排除LIKE条件中的某些字符,可以使用NOT LIKE运算符。例如,如果要排除包含字...
SQL > col tablespace format a20SQL > select b.file_id 文件ID, b.tablespace_name 表空间, b.file_name 物理文件名, b.bytes 总字节数, (b.bytes-sum(nvl(a.bytes,0))) 已使用, sum(nvl(a.bytes,0)) 剩余, sum(nvl(a.bytes,0))/(b.bytes)*100 剩余百分比 from dba_free_space a,dba_d...
SQL> connect / assysdba SQL> select * from v $version; SQL> create pfile from spfile; SQL> Create SPFILE FROM PFILE='E:ora9iadmineyglepfileinit.ora'; 文件已成立。 SQL> Create SPFILE='E:ora9idatabaseSPFILEEYGLE.ORA' FROM PFILE='E: ora9iadmineyglepfileinit.ora'; 文件已成立。 71. ...
Oracle treats both empty strings and NULL values as NULL. This is important if you define a SQL Server column as NOT NULL, and are replicating the column to an Oracle Subscriber. To avoid failures when applying changes to the Oracle Subscriber, you must do one of the following: ...
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INCLUDE OPEN PREPARE SET WHENEVERIn most cases, the character string can contain dummy host variables. They hold places in the SQL statement for actual host variables. Because dummy host variables are just placeholders, you do not declare them and can name them anything you like. For example, ...
When you change an existing line(s) of code, comment out the original line(s) and include detailed comments about the change in front of the new line of code, the developer's name, and the date. For example: SQL*Plus and PL/SQL: ...
INCLUDE=PROCEDURE:"LIKE 'PROC_U%'"--包含以PROC_U开头的所有存储过程(_ 符号代表任意单个字符) INCLUDE=TABLE:"> 'E' "--包含大于字符E的所有表对象 impdp impdp user/passwd@localhost:1521/orcl dumpfile=exp.dmp logfile=imp.log--将exp.dmp导入到user用户下 ...
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date and time information as doesjava.sql.Timestamp.The more obvious mapping tojava.sql.Datewas somewhat problematic asjava.sql.Datedoes not include time information. It was also the case that the RDBMS did not support theTIMESTAMPSQL type, so there was no problem with mappingDATEtoTimestamp...