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Old June 14th, 2004, 03:29 PM
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Default Split Data into Multiple Tables

Hi Everyone,

I am looking to split a table in multiple tables. I have 29221283 records to split into 10 equals parts, like TableA, TableB, TableC, etc., does anyone have a script or a method to cycle through the records for selecting the split for the table.

These are the column names and data types

    ID int 4
    Xcoord float 8
    Ycoord float 8
    Elev float 8
Any help or recommendation will be greatly appreciated.


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Old June 14th, 2004, 03:39 PM
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Hi,

You can try with SELECT INTO passing top XXXXX number of records and split them. It would not take too much time for that.

Or If you want I can write a script to do that for you.

Cheers!

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Old June 14th, 2004, 03:50 PM
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If it is not asking too much, I really appreciate the script.
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Old June 14th, 2004, 04:10 PM
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Quote:
quote:
I am looking to split a table in[to] multiple tables. I have 29221283 records to split into 10 equal parts...
On what basis would you split these? IOW, how would you know which data is in which table after the split has been done and you want to query the data?

And why do you want to split them? What's wrong with having them all in one table?

Jeff Mason
Custom Apps, Inc.
www.custom-apps.com
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Old June 14th, 2004, 05:10 PM
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I will like to split them by ID sequential

for example

TableA 1- 9000
TableB 90001- 20000 etc.,

The data will not change, these are GIS coordinates.

The database is in ACCESS 2000 and GIS users complain their searches are very slow. It will soon be moved to SQL 2000.

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Old June 14th, 2004, 05:15 PM
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What version of Access is that? INT and FLOAT looks like SQL server datatypes, and not of ACCESS.

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Old June 14th, 2004, 05:20 PM
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These are SQL 2000 Data types. The Database is in Access 2000 at the moment.

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Old June 14th, 2004, 05:24 PM
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So is that you want to split and port data from Access to SQL?

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Old June 14th, 2004, 05:24 PM
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Quote:
quote:Originally posted by jemacc
 I will like to split them by ID sequential

for example

TableA 1- 9000
TableB 90001- 20000 etc.,

The data will not change, these are GIS coordinates.

The database is in ACCESS 2000 and GIS users complain their searches are very slow. It will soon be moved to SQL 2000.
Are you sure that the reason the query is slow is because the table is 'too' big? Just be sure you are solving the right problem, especially if you are moving to a real database...

How do you intend to do your lookups? What table will you use to look up a random set of coordinates, for example? I hope you never have to JOIN to these tables and combine coordinates, as figuring out which table contains which data is going to be a nightmare...

IMO, this is almost assuredly a bad idea...

Jeff Mason
Custom Apps, Inc.
www.custom-apps.com
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Old June 14th, 2004, 05:29 PM
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From My understanding (GIS Group) indicates their software knows how to handle this.





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