Use thedecodefunction to create an if-then-else statement. In this example: if the color ID is 1000 the result is red; if the color ID is 1001 the result is blue; if the color ID is 1002 the result is yellow; otherwise the return value is none. ...
Here is an example of how you can use the CASE statement to emulate the DECODE function: sql SELECT column, CASE column WHEN 'value1' THEN 'result1' WHEN 'value2' THEN 'result2' ELSE 'default_result' END AS decoded_value FROM table; In this example, you replace the `column`, `'...
You could use the decode function in an SQL statement as follows:select supplier_name,decode(supplier_id,1000,'IBM',10001,'Microsoft','1002','Hewlett Packard','Gateway') result from suppliers; 1. 2. 3. 上面的sql语句相当于下面的IF-THEN-ELSE : 复制 IFsupplier_id=10000THENresult:='IBM';...
You could use the decode function in an SQL statement as follows: select supplier_name,decode(supplier_id,1000,'IBM',10001,'Microsoft','1002','Hewlett Packard','Gateway') result from suppliers; 上面的sql语句相当于下面的IF-THEN-ELSE : IF supplier_id = 10000 THEN result := 'IBM'; ELSIF ...
You could use the decode function in an SQL statement as follows:select supplier_name,decode(supplier_id,1000,'IBM',10001,'Microsoft','1002','Hewlett Packard','Gateway') result from suppliers;上面的sql语句相当于下面的IF-THEN-ELSE :IF supplier_id = 10000 THENresult := 'IBM';ELSIF supplier...
For example: You could use the decode function in an SQL statement as follows: SELECT supplier_name, The above decode statement is equivalent to the following IF-THEN-ELSE statement: IF supplier_id = 10000 THEN result := ‘IBM’;
package com.example.demo.netty; import org.jboss.netty.bootstrap.ServerBootstrap; import org.jboss.netty.channel.*; import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory; import org.jboss.netty.handler.codec.string.StringDecoder; ...
decode 在OraclePLSQL中, decode 具有和 IFTHENELSE 一样的功能。 decode 函数语法如下: decode expression , search , result , search , result.
For example: select emp_name,decode(trunc((yrs_of_service+3)/4),0,0.04,1,0.04,0.06) as perc_value from employees; 问题4: decode函数的参数个数有限制吗?我得到一个错误 "ORA-00939: too many arguments for function". 回答: 是的,decode函数的最大参数个数为255个,包括expression,search, andre...
In this example, theDECODEfunction is used to handle different status values and assign a cleaned status value or ‘Unknown’ for any invalid or missing status. Example 3: Conditional Assignment The SQL Hive Decode function can also be used for conditional assignment based on multiple conditions....