HANA SQL Script学习（1）：Orchestration Logic

时间：2020-12-03 11:43:29 收藏：0 阅读：10

4.SAP HANA SQL Script

4.1 Orchestration Logic

1.Orchestration Logic

示例：orchestrationProc

CREATE PROCEDURE orchestrationProc
 LANGUAGE SQLSCRIPT
 READS SQL DATA AS
 BEGIN       
       DECLARE v_id BIGINT;       
       DECLARE v_name VARCHAR(30);       
       DECLARE v_pmnt BIGINT;       
       DECLARE v_msg VARCHAR(200);    
   
       DECLARE CURSOR c_cursor1 (p_payment BIGINT) FOR                        
       SELECT id, name, payment FROM control_tab                            
              WHERE payment > :p_payment                            
              ORDER BY id ASC;   
          
       OPEN c_cursor1(250000);        
       FETCH c_cursor1 INTO v_id, v_name, v_pmnt;        
       v_msg = :v_name || ‘ (id ‘ || :v_id || ‘) earns ‘ || :v_pmnt || ‘ $.‘;        
       CALL ins_msg_proc(:v_msg);       
       CLOSE c_cursor1;
 END

procedure :ins_msg_proc

--创建message表
CREATE TABLE message_box (p_msg VARCHAR(200), tstamp TIMESTAMP);

--创办procedure
CREATE PROCEDURE ins_msg_proc (p_msg VARCHAR(200))
 LANGUAGE SQLSCRIPT AS
 BEGIN   
       INSERT INTO message_box VALUES (:p_msg, CURRENT_TIMESTAMP);
 END;