Hvordan konverterer jeg dette fra TSQL til MYSQL?

Fra dokumentationen:DECLARE is permitted only inside a BEGIN ... END compound statement and must be at its start, before any other statements.

Opdater

Her er noget tættere på. Du bliver nødt til at sortere syntaksen for CONVERT hvilket er anderledes i MySQL.

DELIMITER $$
CREATE PROCEDURE test()
BEGIN
    DECLARE dateInsert DATETIME;
     SET dateInsert = '1900-01-01';
     WHILE dateInsert < '2100-01-01' DO
        BEGIN
             INSERT INTO DateLookup
             (
                 DateKey, DateFull, FullYear,
                 QuarterNumber, WeekNumber, WeekDayName,
                 MonthDay, MonthName, YearDay,
                 DateDefinition,
                        CharacterDate,
                        WeekDay,
                        MonthNumber
             )

             SELECT
                 CONVERT(VARCHAR(8), dateInsert, 112), dateInsert, YEAR(@Date),
                 DATEPART(qq, dateInsert), DATEPART(ww, dateInsert), DATENAME(dw, dateInsert),
                 DATEPART(dd, dateInsert), DATENAME(mm, dateInsert), DATEPART(dy,@Date),
                       DATENAME(mm, dateInsert) + ' ' + CAST(DATEPART(dd, dateInsert) AS CHAR(2)) + ',   
                   ' + CAST(DATEPART(yy, dateInsert) AS CHAR(4)),
                   CONVERT(VARCHAR(10), dateInsert, 101),
                   DATEPART(dw, dateInsert),
                   DATEPART(mm, dateInsert)

             SET dateInsert = DATEADD(dd, 1, dateInsert)
        END
     END WHILE;
END $$