This Oracle tutorial explains how to use the Oracle/PLSQLCASE statementwith syntax and examples. Description The Oracle/PLSQL CASE statement has the functionality of an IF-THEN-ELSE statement. Starting in Oracle 9i, you can use the CASE statement within a SQL statement. Syntax The syntax for ...
AI代码解释 --这部分内容主要有多个不同的Finding组成,且每个Finding均包含以下内容:--1、在Finding标题中列出相应的Findings名称,如TopSQL,或者相关等待事件如Free Buffer Waits--2、描述受影响的活动会话数,以及占用总活动的百分比--3、给出优化建议,采取的行动,以及理论依据 Finding1:TopSQLStatements Impact is2.9...
可以将 SELECT 语句指定为轮询语句,适配器会定期执行该语句来轮询 Oracle 数据库。 (可选)还可以指定在数据发生更改时适配器执行的轮询后 PL/SQL 代码块。 此块通常用于更新目标中查询记录上的字段,或将查询的记录移动到另一个表或视图。 若要启用此功能,必须在 Oracle 数据库适配器上指...
This Oracle tutorial explains how to use the OracleSELECT statementwith syntax, examples, and practice exercises. Description The Oracle SELECT statement is used to retrieve records from one or more tables in an Oracle database. Syntax The syntax for the SELECT statement in Oracle/PLSQL is: SELE...
DECODE is considered the most powerful function in Oracle. Oracle 8i release introduced the CASE expression. The CASE expression can do all that DECODE does plus lot of other things including IF-THEN analysis, use of any comparison operator and checking multiple conditions, all in a SQL query ...
21-12-2022 10:37:44 CST Error executing statement: java.sql.SQLRecoverableException: Io exception: Connection reset java.sql.SQLRecoverableException: Io exception: Connection reset at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:101) at oracle.jdbc.driver.DatabaseError.new...
当出现"SQL statement ignored"错误时,通常是由于SQL语句中有语法错误或者逻辑错误导致Oracle无法正确解析SQL语句。要解决这个问题,需要检查SQL语句中的各个部分,确保语法正确,逻辑清晰,没有拼写错误或者其他错误。 以下是一些常见的导致"SQL statement ignored"错误的原因和解决方法: 检查SQL语句中的关键字和标点符号是否...
PL/SQL: Statement ignored SQL> 出现错误 :该存储过程无效。 what?明明刚刚建立的存储过程啊。然后我就翻到上面创建完之后的一句话,Warning: Procedure created with compilation errors.翻译过来应该是:创建的过程带有编译的错误。 也就是说创建存储过程有错误,那么OK,找找存储过程看看哪错了。
OracleCASEexpression allows you to addif-elselogic to SQL statements without having to call aprocedure. TheCASEexpression evaluates a list of conditions and returns one of the multiple possible results. You can use aCASEexpression in any statement or clause that accepts a valid expression. For ex...
Run the following statement to check whether the CDB is enabled for the database. If the return valueistrueoryes, the CDB is enabled. If it isfalseor no, the CDB is not enabled. SELECT CDB FROM V$DATABASE; Run the following command to configure privileges for the XStream admin. ...