如果你也是无法成功执行catalog.sql,接着往下看。 一、故障现象 --后台alert log日志出现大量的ORA-00604,ORA-04045的错误信息 Tue Nov 5 14:14:02 2013 Errors in file /u02/database/XA4701/udump/XA4701_ora_30871.trc: ORA-00604: error occurred at recursive SQL level 1 ORA-04045: errors during ...
SQL语句大全 –语 句功能 –数据操作 SELECT –从数据库表中检索数据行和列 INSERT –向数据库表添加新数据行 DELETE –从数据库表中删除数据行 UPDATE –更新数据库表中的数据 -数据定义 CREATE TABLE –创建一个数据库表 DROP TABLE –从数据库中删除表 ALTER TABLE –修改数据库表结构 CREATE VIEW –创建...
SELECT*FROM(SELECTCustomerID,ProductID,QuantityFROMOrders)ASSourceTablePIVOT(SUM(Quantity)FORProductID...
end as new_var from table: ## 根据天龄的范围,决定学生上课的次数; ## 计算天龄:datediff(CURRENT_DATE(), birthday); select * , case when (datediff(CURRENT_DATE(), birthday) >=0 and datediff(CURRENT_DATE(), birthday)<=30) then 2 when (datediff(CURRENT_DATE(), birthday) >30 and ...
2.select group_concat(column_name) from information_schema.columns where table_schema=database() and table_name=‘flag’; 3.上面可能会被waf识别,也可以这样 select group_concat(column_name) from information_schema.columns where table_name=‘users’; ...
REPLACE---搜索指定字符串并替换 格式∶REPLACE(string , substring , replace_string) 例∶ REPLACE(‘this is a test’ , ‘this’ , ‘that an’)=’that an is a test’ TRIM---删除字符串前缀或尾随字符 格式∶TRIM( [LEADING | TRAILING |BOTH] [ trimchar FROM ] string) ...
SELECT * FROM OrdersTable WHERE ShipCity = 'Redmond';drop table OrdersTable--' 分号(;) 表示一个查询的结束和另一个查询的开始。双连字符 (--) 指示当前行余下的部分是一个注释,应该忽略。如果修改后的代码语法正确,则服务器将执行该代码。SQL Server 处理该语句时,SQL Server 将首先选择 OrdersTable ...
--- 否则应在外层where子句中用一个in限定符 select distinct column_name form table_name --- distinct指定检索独有的列值,不重复 select stocknumber ,"stocknumber + 10" = stocknumber + 10 from table_name select stockname , "stocknumber" = count(*) from table_name group by stockname ---...
SELECT x FROM correlated WHERE f1 = 0 AND f2 = 1 OPTION (QUERYTRACEON 4199, QUERYTRACEON 4137); Trace flags The following table lists and describes the trace flags that are available in SQL Server. Azure SQL Managed Instance supports the following global Trace Flags: 460, 2301, 2389, ...
The relationship is self-referencing and is specified with a delete rule of RESTRICT or SET NULL and the table is a dependent in a relationship with a delete rule of CASCADE. 2 The relationship is specified with a delete rule of CASCADE, and a self-referencing relationship with the delete ...