在Oracle SQL中,WHERE子句是用于筛选满足特定条件的数据行的子句。它可以与SELECT语句一起使用,以便从表中检索满足指定条件的数据。 在WHERE子句中,CASE语句是一种条件表达式,...
sql code: select * from table_name t where (case when t.table_column='条件' then t.table_column when t.table_column='条件' then t.table_column end)='条件' my sql code: -- 测试sql SELECT *FROM PROJECT_INFO pi WHERE (CASE WHEN PI.START_DATE_OF_REMOTE_AUDIT IS NOT NULL THEN TO...
SQL>show userUSER为"HR"SQL>SELECTfirst_name,last_name,department_id,2CASEdepartment_id3WHEN10THEN'Accounting'4WHEN20THEN'Sales'5WHEN30THEN'Finance'6ELSE'Other'7ENDdepartment_name8FROMemployees where rownum<2;FIRST_NAMELAST_NAMEDEPARTMENT_IDDEPARTMENT_NAME---Steven King90OtherSQL> ※测试使用的Orac...
CASE expression syntax is similar to an IF-THEN-ELSE statement. Oracle checks each condition starting from the first condition (left to right). When a particular condition is satisfied (WHEN part) the expression returns the tagged value (THEN part). If none of the conditions are matched, the...
57.Oracle数据库SQL开发之 高级查询——使用CASE函数 欢迎转载,转载请标明出处:http://blog.csdn.net/notbaron/article/details/49847013 CASE表达式可以再SQL中实现if-then-else型的逻辑,9i及以上版本支持CASE表达式。 1. 使用简单CASE表达式 语法如下:
To do this, ensure thesql_transpilerparameter ison(it'soffby default). When a function in thewhereclause is transpiled, you can see the case expression instead of the function in the predicate section of the plan: There are a few differences betweencasein PL/SQL andOracle SQL. ...
SELECTcolumn1,column2,column3,...INTOnewtable[INexternaldb]FROMoldtableWHEREcondition; 1. 2. 3. 4. 新表将按照在旧表中定义的列名和类型创建。您可以使用AS子句创建新的列名。 SQL SELECT INTO 示例 以下SQL 语句创建Customers的备份副本: SELECT*INTOCustomersBackup2017FROMCustomers; ...
In a simpleCASEexpression, Oracle Database searches for the firstWHEN...THENpair for whichexpris equal tocomparison_exprand returnsreturn_expr. If none of theWHEN...THENpairs meet this condition, and anELSEclause exists, then Oracle returnselse_expr. Otherwise, Oracle returns null. ...
SQL HAVING 子句详解:在 GROUP BY 中更灵活的条件筛选 下一篇 » 选择适合您网站的 SQL 托管:MS SQL Server、Oracle、MySQL 引用和评论 注册登录 获取验证码 新手机号将自动注册 登录 微信登录免密码登录密码登录 继续即代表同意《服务协议》和《隐私政策》...
Last Locked Revision for a Version in a Period (Case Receipt Date) Point-in-Time Query The following are the steps to create custom SQL for Current Data point-in-time query:Login to Oracle Argus Insight.Navigate to Queries > Advance Condition > ...