how to convert a MySQL date (linked server) to MS SQL?

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how to convert a MySQL date (linked server) to MS SQL?

skpearson

Mr or Mrs. 500

Points: 519
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February 12, 2013 at 10:01 am

#394169

Hi, I'm stuck on converting a MySQL date field (on a linked server) to MS SQL datetime format. I've googled this, but am having trouble finding something useful (other than using OpenQuery, but that's not ideal for a large update command with joins between the MySQL and MS SQL tables).
Here's an abbreviated version of my update command:
UPDATE dbo.NCU_Apply_FromWeb
SET guardian1_attended_date = A_D.guardian1_attended_date
from NCU_Apply_FromWeb NAW
inner join mysql_apply...apply_2 A_D on A_D.uid = NAW.uid
Error message:
Msg 8114, Level 16, State 8, Line 1
Error converting data type DBTYPE_DBTIMESTAMP to datetime.
Any suggestions?

Viewing 12 posts - 1 through 11 (of 11 total)

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Gazareth One Orange Chip Points: 27737 More actions · Answer 1

At a guess, you're encountering out-of-range values from MySQL (probably lovely old '0000-00-00 00:00:00') - if you can convert these to null it should work, I think. Last time I did this it was using OPENQUERY so not sure if it'll work in a straight join.

Cheers

Gaz

skpearson Mr or Mrs. 500 Points: 519 More actions · Answer 2

Thanks, Gaz, but that's not it.

The MySQL values are:

2013-02-03 00:00:00.000

2013-02-11 00:00:00.000

Gazareth One Orange Chip Points: 27737 More actions · Answer 3

Hi,

Are those values for the entire table, not just the matching rows? My feeling is SQL will grab all the data before trying the join.

Thanks

skpearson Mr or Mrs. 500 Points: 519 More actions · Answer 4

Those are the values for A_D.guardian1_attended_date (from the query above). Yes, there are only 2 rows that are joined.

Gazareth One Orange Chip Points: 27737 More actions · Answer 5

Thanks, does select * from mysql_apply...apply_2 return the data sucessfully?

skpearson Mr or Mrs. 500 Points: 519 More actions · Answer 6

No. I neglected to mention I use this before the select:

DBCC TRACEON(8765)

However, I still get

Msg 8114, Level 16, State 8, Line 2

Error converting data type DBTYPE_DBTIMESTAMP to datetime.

when I run

DBCC TRACEON(8765)

select * from mysql_apply...apply_2

Gazareth One Orange Chip Points: 27737 More actions · Answer 7

No worries, not a trace flag I've used before but not sure it'll help with date fields.

Out of range datetimes was about all I had for this - hopefully someone else will be along with another suggestion.

Cheers

Gaz

skpearson Mr or Mrs. 500 Points: 519 More actions · Answer 8

skpearson

Mr or Mrs. 500

Points: 519

February 12, 2013 at 11:04 am

#1587144

Thanks anyways, Gaz!

Gazareth One Orange Chip Points: 27737 More actions · Answer 9

No worries. Just noticed these are your first posts on the site - welcome to SSC!

agnew-1142997 SSC Enthusiast Points: 190 More actions · Answer 10

Hello! A wee bit of history, MySQL sometimes is used on a basis of "grab that web data, if they forgot the time do it anyhow!".

So, you may have to assign a special date/time that will not come up in normal use, like jan, 01 am, 01 mins after the how, 01 secs after the min, and keep on til you fill up all the fields.

Ugly as a mud fence, but that is one way.. now, if all of the times are important, I'll look around for something, this is first thing in the morning, and i'm not too awake yet! 😉

hope it helps.. btw, I'm both a MySQL and SQL Server dba..

J.

azzaoui.wahid SSC Rookie Points: 27 More actions · Answer 11

you could use DATE_FORMAT() to deal with this issue

SELECT T.field

FROM

OPENQUERY(LINKSERVER, 'SELECT DATE_FORMAT(t.field,''%X-%m-%d %H:%i:%f'') as field FROM table t ' ) AS T

the date '0000-00-00 00:00:00' will be replaced by ==> 00-00-0001 00:00:00