mariadb fonction, procedure error You have an error in your SQL

问题

DELIMITER /
CREATE FUNCTION filltimeDim ()
BEGIN
    DECLARE vQuarter VARCHAR(6);
    DECLARE vMonth_Name VARCHAR(20);
    DECLARE vdate_id date;
    DECLARE vyear_id CHAR(4);
    DECLARE vweekly_Name VARCHAR(20);
    DECLARE vMonth_Num TINYINT(10);
    DECLARE vweekday_Num TINYINT(10);
    BEGIN
        SET vdate_id =  CONVERT('1998-01-01', DATE);
        WHILE (CONVERT('vdate_id' USING utf8) <=  '2002-12-31')
        LOOP
            SET vyear_id =  YEAR(vdate_id);
            SET vQuarter =  QUARTER(vdate_id);
            SET vMonth_Name =  MONTHNAME(vdate_id);
            SET vweekly_Name =  DAYOFWEEK(vdate_id);
            SET vMonth_Num =  MONTH(vdate_id);
            SET vweekday_Num =  WEEKDAY(vdate_id);
            INSERT INTO Time_Dim VALUES 
            (vdate_id, vyear_id, vquarter, vMonth_Name,vweekly_Name,vMonth_Num,vweekday_Num);
            SET vdate_id = vdate_id + 1;
        END LOOP;   
    END;
END; /

Error: ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'BEGIN DECLARE vQuarter VARCHAR(6); DECLARE vMonth_Name VARCHAR(20); ' at line 2

回答1:

You probably want to create a stored procedure instead of a function.

Also, MariaDB uses the DO keyword instead of LOOP to mark the start and end of the WHILE loop. Here's a fixed version of the SQL that completes successfully:

DELIMITER //
CREATE PROCEDURE filltimeDim ()
BEGIN
    DECLARE vQuarter VARCHAR(6);
    DECLARE vMonth_Name VARCHAR(20);
    DECLARE vdate_id date;
    DECLARE vyear_id CHAR(4);
    DECLARE vweekly_Name VARCHAR(20);
    DECLARE vMonth_Num TINYINT(10);
    DECLARE vweekday_Num TINYINT(10);
    BEGIN
        SET vdate_id =  CONVERT('1998-01-01', DATE);
        WHILE (CONVERT(vdate_id USING utf8) <=  '2002-12-31')
        DO
            SET vyear_id =  YEAR(vdate_id);
            SET vQuarter =  QUARTER(vdate_id);
            SET vMonth_Name =  MONTHNAME(vdate_id);
            SET vweekly_Name =  DAYOFWEEK(vdate_id);
            SET vMonth_Num =  MONTH(vdate_id);
            SET vweekday_Num =  WEEKDAY(vdate_id);
            INSERT INTO Time_Dim VALUES
            (vdate_id, vyear_id, vquarter, vMonth_Name,vweekly_Name,vMonth_Num,vweekday_Num);
            SET vdate_id = vdate_id + INTERVAL 1 DAY;
        END WHILE;
    END;
END; //

Note that the modified SQL uses date arithmetic instead of numeric arithmetic. This correctly updates the date whereas the original caused a date overflow.

来源：https://stackoverflow.com/questions/59424533/mariadb-fonction-procedure-error-you-have-an-error-in-your-sql

标签

function

mariadb

procedure