DATETIME COLUMN

[Nihil Shah]

I am attempting to migrate 84 tables located in ms-sql to mysql using the mysql migration toolkit. In all of these tables there is a datetime column. The problem is MS-SQL server's Datetime column can hold milliseconds. Mysql's DATETIME column can not hold milliseconds. The obvious solution is to create a seprate interger or varchar field that holds the millisecond data. So I created a SQL script (Bottom of topic) that creates a virtual column called "millisec". Is there any way to execute the sql script on the migration toolkit's source database before the the migration toolkit executes the "creates.sql" script on the target database. If not is there another solution to my problem.

SQL script:

DECLARE @today datetime, @yesterday datetime
SELECT @today = CAST (SUBSTRING(CONVERT(varchar,GETUTCDate(),120),1,10) + ' 00:00:00' AS datetime)
SELECT @yesterday = DATEADD(day, -1, @today)

SELECT
CONVERT(char(19),time_tag,120) AS time_tag,
substring(CONVERT(char(23),time_tag,121),21,3) AS millisec,
S1_QUAL_FLAG,
S1_COUNT,
S1_COUNT_RATE,
S2_QUAL_FLAG,
S2_COUNT,
S2_COUNT_RATE,
S3_QUAL_FLAG,
S3_COUNT,
S3_COUNT_RATE,
S4_QUAL_FLAG,
S4_COUNT,
S4_COUNT_RATE,
S5_QUAL_FLAG,
S5_COUNT,
S5_COUNT_RATE

FROM thetablename
WHERE time_tag >= @yesterday and time_tag < @today
ORDER BY time_tag