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 i...
WHENclause contains a search condition that yields a BOOLEANvalue, so you can test different variables or multiple conditions in a singleWHENclause. Example 2-27 Using a Search Condition With a CASE Statement DECLARE grade CHAR(1) := 'B'; appraisal VARCHAR2(120); id NUMBER := 8429862; att...
select sum(case when person_status_id in (3,4,6) then (select 1 as x, count(*) as cnt from PERSON w and w.UPDATED_ON> (sysdate-30) )v end) as Completed, sum(case when person_status_id in (5,7,13) then (select 1 as x, count(*) as cnt from PERSON w and w.UPDATED_ON...
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 value mentioned in ...
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...
type_1=np.select(conditions,choices,default='C')score_type_1numpy select方法类似case when语法，...
Map complex conditions to values with searched CASE expressions The format for a searchedcaseexpression is the syntax shown above: The core differences between this and simple expressions are: You can use multiple selectors The selectors are evaluated in everywhenclause the database runs ...
By automating processes that used to be manual, Oracle Cloud ERP helps finance teams respond quickly to fast-changing business conditions. It also supports collaboration within the application suite for instant data sharing and problem solving and offers built-in, standardized best practices that ...
在使用in和like运算符对数据进行分类时使用case的多个条件使用in与substr():
CASE WHEN condition_1 THEN statements_1 WHEN condition_2 THEN statements_2 ... WHEN condition_n THEN statements_n [ ELSE else_statements ] END CASE;] Code language: PostgreSQL SQL dialect and PL/pgSQL (pgsql) The searched CASE statement follows the rules below: The conditions in the WHEN...