Here is an example that demonstrates how to use the CASE statement to compare different conditions: SELECT CASE WHEN a < b THEN 'hello' WHEN d < e THEN 'goodbye' END FROM suppliers; Frequently Asked Questions Question:Can you create a CASE statement that evaluates two different fields? I w...
but notice that some conditions have been added based on what department number the employee is in. You can see that a searched case statement can have many different when clauses, and that you can apply many criteria
如何使用 Oracle Case Statement 测试不等式问题描述 投票:0回答:3这很好用: select case (1+2) -- (or_some_more_complicated_formula_yielding_a_numeric_result) when 200 then '200' when 100 then '100' else 'other' end hi_med_low from dual ; 但我需要做更多这样的事情: select case (1+...
SQL Statement Retrieve data from the Oracle data source by using an SQL query. When you select this option, enter a query in one of the following ways: Enter the text of the SQL query inSQL command. ClickBrowseto load the SQL query from a text file. ...
<sql:dbQuery [ queryId="query-id" ] [ connId="connection-id" ] [ output="HTML|XML|JDBC"] > ...SELECT statement (one only)... </sql:dbQuery> Important: In OracleJSP release 1.1.2.x, do not terminate the SELECT statement with a semi-colon. This would result in a syntax ...
When a statement is executed on the logical standby database, it will access the database link at that time. It is not possible to know if the information on the logical standby database is the same as it was at the time the statement was executed on the primary database. For example...
Oracle CASE expression allows you to add if-else logic to SQL statements without having to call a procedure. The CASE expression evaluates a list of conditions and returns one of the multiple possible results. You can use a CASE expression in any statement or clause that accepts a valid expre...
You can also view an execution plan for a single SQL statement with SQL Developer or in the SQL Workshop area of Application Express, which is discussed in Chapter 15. The optimizer writes all of this information to a table in the database. By default, the optimizer uses a table called...
This tutorial provides an introduction to the Structured Query Language (SQL), learn how to create tables with primary keys, columns, constraints, ind... Tutorial SQL Macros - Creating parameterised views This tutorial explains how to create a parameterized view using SQL Macros. The examples use...
Movies show it as the first step on the road to a robot apocalypse, while the news is filled with stories of how AI will take all our jobs. The truth is that AI has existed for a while, and neither of those worst-case scenarios are likely imminent. Fundamentally, AI uses data to ...