oracle逐行处理函数LAG 在Oracle中,要计算一个列除以上一行的同一列值,可以使用LAG函数来获取上一行的值。以下是一个示例SQL查询,它使用LAG来计算当前行除以上一行的同一列值: SELECT column_value, column_value/LAG(column_value)OVER (ORDERBY some_order_column)AS division_result FROM your_table; 在这个查...
Entries will be added to the /etc/oratab file as needed by Database Configuration Assistant when a database is created Finished running generic part of root script. Now product-specific root actions will be performed. 11. 安装完成 确认软件安装 [oracle@P750E1:/home/oracle]$ sqlplus -V SQ...
select a.name,b.xacts,c.sid,c.serial#,d.sql_text from v$rollname a,v$rollstat b,v$session c,v$sqltext d,v$transaction e where a.usn=b.usn and b.usn=e.xidusn and c.taddr=e.addr and c.sql_address=d.address and c.sql_hash_value=d.hash_value order by a.name,c.sid,d.piece...
在执行SQL> @?/rdbms/admin/ashrpt.sql命令后,会让有如下参数需要手动填写:(1)日志报告类型Enter value for report_type: text -- 选择生成的ASH 报告类型,是text 还是html(2)日志报告起始时间Enter value for begin_time: 08/31/1620:00:00-- 输入ASH 开始的时间,时间格式上面的示例有说明,比如我这里是...
$ORACLE_HOME/rdbms/admin/awrrpt.sql可以根据自己收集awr报告的原因来决定生成一个快照的时间间隔也可以指定生成awr报告的格式(text或html).生成各种类型的awr报告可以根据各种要求来运行各种sql脚本来生成各种类型的awr报告.每一种报告都有两种格式(txt或html):awrrpt.sql显示指定快照范围内的各种统计信息...
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sql. SELECT product_name, (sales_amount / (SELECT SUM(sales_amount) FROM sales)) * 100 AS sales_percentage. FROM sales; 在这个查询中,子查询`(SELECT SUM(sales_amount) FROM sales)`计算出了总销售金额,然后主查询中的每一行数据,也就是每种产品的销售金额,除以这个总金额,再乘以100,就得到了每种...
, extremely powerful tool. Because of the graph format, complex relationships can be determined for deeper insights with much less effort.Graph databases generally run queries in languages such as Property Graph Query Language (PGQL). The example below shows the same query in PGQL and SQL....
A PL/SQL stored procedure referenced by an Oracle Workflow function activity that can enforce business rules, perform automated tasks within an application, or retrieve application information. The stored procedure accepts standard arguments and returns a completion result. See also function activity.funct...
An automated Oracle Workflow unit of work that is defined by a PL/SQL stored procedure. See also function.functional currency Currency you use to record transactions and maintain your accounting information. The functional currency is generally the currency used to perform most of your company's bu...