создать хранимую процедуру, если оператор только дает ошибку sytax

Question

DELIMITER $$ 

CREATE 
    PROCEDURE pro_academic_yr(ac_year VARCHAR(100),ac_year_status VARCHAR(10),ac_from_dt DATE,ac_to_dt DATE) 
    BEGIN 
    IF EXISTS (SELECT * FROM tsb_acadamic_yr WHERE ac_year_status='current') THEN 
    UPDATE tsb_acadamic_yr SET ac_year_status='Previous' WHERE ac_year_status='current'; 
    END IF; 
    INSERT INTO tsb_acadamic_yr (ac_year,ac_year_status,ac_from_dt,ac_to_dt) VALUES(ac_year,ac_year_status,ac_from_dt,ac_to_dt) 
    END $$ 

DELIMITER ; 

Answer 1

Пожалуйста, попробуйте это.

DELIMITER $$ 
CREATE 
     PROCEDURE pro_academic_yr(ac_year VARCHAR(100),ac_year_status VARCHAR(10),ac_from_dt DATE,ac_to_dt DATE) 
    BEGIN 
    DECLARE VAR_COUNT INT; 
    SELECT count(*) INTO VAR_COUNT FROM tsb_acadamic_yr WHERE ac_year_status='current'; 
    IF (VAR_COUNT > 0) THEN 
    UPDATE tsb_acadamic_yr SET ac_year_status='Previous' WHERE ac_year_status='current'; 
    END IF; 
    INSERT INTO tsb_acadamic_yr (ac_year,ac_year_status,ac_from_dt,ac_to_dt) VALUES(ac_year,ac_year_status,ac_from_dt,ac_to_dt); 
END$$ 
DELIMITER ; 

Надеюсь, это поможет вам.