Thanks very much for your response. I tried a simple test based on this
suggestion as follows:
CREATE TABLE "table1" ("field1" INTEGER PRIMARY KEY NOT NULL UNIQUE, "field2"
INTEGER NOT NULL );
INSERT INTO "table1" VALUES(1, 1);
INSERT INTO "table1" VALUES(2, 2);
INSERT INTO "table1" VALUES(3, 3);
INSERT INTO "table1" VALUES(4, 4);
INSERT INTO "table1" VALUES(5, 5);
The update command generated is:
this._adapter.UpdateCommand.CommandText = "UPDATE
[main].[sqlite_default_schema].[table1] SET [field1] = @field1, [field2] =
@field2 WHERE
(([field1] = @Original_field1) AND ([field2] = @Original_field2));"
Changing field2 to REAL or TEXT made no difference. The comparison is always
with both fields.
This is just for information for solution if possible. Fortunately it only
requires a one-time clean-up after the dataset is created.
Thanks
Manish
-----Original Message-----
From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org]
On Behalf Of Simon Slavin
Sent: Friday, March 30, 2012 4:53 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] Concurrency violation: the UpdateCommand affected 0 of
the expected 1 records
On 30 Mar 2012, at 6:27pm, "Agrawal, Manish" <magra...@usf.edu> wrote:
> Thanks very much. Most of our tables do have datetime fields.
Not in SQLite they don't. There is no such datatype in SQLite.
<http://sqlite.org/datatype3.html>
Find out how you're storing your dates, and declare your fields as INTEGER,
REAL or TEXT, then your problem will go away.
Simon.
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