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Resolved How do people work around datetime2 data type in MSSQL?

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  1. James Hsu
    James Hsu
  2. PowerBuilder
  3. Wednesday, 4 November 2020 00:06 AM UTC

We are currently working on migrating an application developed in PB 11.5 to PB 2019 R2.  For about 80% of the functionalities the migration went fine, but for the 20% where we use the datawindow to update the database gives us the following error when inserting into a datetime2 column:

SQLSTATE: 22008 [Microsoft][ODBC Driver 11 for SQL Server] Datetime field overflow. Fractional second precision exceeds the scale specified in the parameter binding.

I know that PB is not compatible with datetime2 data type in MSSQL, but we do not want to change all of our datetime2 columns to datetime.  I saw a suggestion for casting datetime2 into a string for PB app to use and pass it into a stored procedure where it would handle the passed in string and insert into datetime2 column natively.  However, this insert is a part of a transaction involving updates to multiple tables and with this method rollback from PB would not work.  What do people typically do to get around this limitation?

Sincerely,

James

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Responses (3)
Chris Pollach @Appeon
Chris Pollach @Appeon Accepted Answer Pending Moderation
  1. Wednesday, 4 November 2020 00:16 AM UTC
  2. PowerBuilder
  3. # 1

Hi James;

  You should be able to do an update to a DT2 column on the PB App side via an in-line "Execute Immediate" SQL command.

Regards ... Chris

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James Hsu
  1. James Hsu
  2. Tuesday, 15 December 2020 19:15 PM UTC
Thanks for your comment, I did some trial and error, and although your suggestion worked, I ended up altering the table columns to datetime, because using update() was essentially without re-writing a big chunk of code.
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James Hsu
James Hsu Accepted Answer Pending Moderation
  1. Wednesday, 18 November 2020 18:15 PM UTC
  2. PowerBuilder
  3. # 2

Hi, it appears Execute immediate is not possible with a prepared statement, giving me a syntax error.

For example:

PREPARE SQLSA FROM "INSERT INTO TABLE_A (COL_A, COL_B, COL_C, COL_D) VALUES (?,?,?,?)";

EXECUTE SQLSA USING :ls_id, :ls_term, :lr_amt, :ldt_date;

gives no errors when pre-compiling, but:

PREPARE SQLSA FROM "INSERT INTO TABLE_A (COL_A, COL_B, COL_C, COL_D) VALUES (?,?,?,?)";

EXECUTE IMMEDIATE SQLSA USING :ls_id, :ls_term, :lr_amt, :ldt_date;

gives a syntax error.

I've looked at PowerScript reference guide for SQL statements, but it doesn't seem straight forward for using execute immediate for insert statement.

 

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Chris Pollach @Appeon
  1. Chris Pollach @Appeon
  2. Wednesday, 18 November 2020 19:36 PM UTC
Hi James;

You would need to keep the DT2 data in String format within your PB App. Then on an Update or Insert DML command , for example (hard coded) ...

=> CAST (''2020-05-25 019:39:38.007' AS datetime2) // OR

=> CONVERT(datetime2, '19:39:38.007' , 103)

So you could use either SS function and then pass in the data from a PB String variable for the Cast() or Convert() method

HTH

Regards ... Chris

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John Fauss
John Fauss Accepted Answer Pending Moderation
  1. Wednesday, 18 November 2020 19:28 PM UTC
  2. PowerBuilder
  3. # 3

A documented limitation of PB's support for the Datetime2 datatype in SQL Server is that precision of fractional seconds is limited to six digits:

https://docs.appeon.com/pb2019r2/connecting_to_your_database/ch10s07.html

 

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