Author: AndyHC
Posted: 2017-11-16 at 03:21:56
Have you checked:
https://www.connectionstrings.com/sqlite/
https://www.connectionstrings.com/sqlite3-odbc-driver/
On 16-Nov-2017 5:44 AM, Paul H. Tarver wrote:
> Ok, I give up. I've been using Whil Hentzen's book "Using SQLite to Bypass
> The 2GB .DBF Filesize Limit" for a project I'm trying to develop and I have
> some weird behavior going on.
>
>
>
> I'm trying to use SQLite3 to deal with an import file that will have 350+
> columns. I've been using the the examples and doing everything via the
> SQLite3.exe command prompt works as documented. I've also worked out a SQL
> script using SQLite Expert to drop a table if it exists, create an empty
> table and the corresponding indexes. Up to this point everything worked as
> expected.
>
>
>
> However, now I'm trying to migrate this code into VFP9 using SQL
> Pass-Through, but here's what I'm running into:
>
>
>
> If I create a DSN using the ODBC drive and then use SQLCONNECT('dsn-name'),
> the connection is made and if the database file "trnslate.db" doesn't
> already exist it is created in the folder I designated in the Database Name
> field of the DSN.
>
>
>
> However, if I create DSN-Less connection (SQLSTRINGCONNECT) using the
> connection string I get back using SQLGETPROP(lnhandle,"ConnectString") , I
> get a handle, but it is to a "trnslate.db" database that doesn't contain the
> table I previously created and if the "trnslate.db" table doesn't already
> exist in the designated folder, it is NOT created on the hard drive.
> However, it apparently IS created in memory. I can create a table and issue
> a select command and get back the results I expect, but a database file is
> NEVER physically created on the hard drive which I need to do for my
> purposes.
>
>
>
> Here is some sample code to see if you can tell me where I'm going wrong:
>
>
>
> liH = SQLSTRINGCONNECT( "DRIVER=SQLite3 ODBC Driver;" + ;
>
> "DBNAME=T:\trnslate.db;" + ;
>
> "PWD=;" + ;
>
> "StepAPI=0;" + ;
>
> "SyncPragma=;" + ;
>
> "NoTXN=0;" + ;
>
> "Timeout=;" + ;
>
> "ShortNames=0;" + ;
>
> "LongNames=0;" + ;
>
> "NoCreat=0;" + ;
>
> "NoWCHAR=0;" + ;
>
> "FKSupport=0;" + ;
>
> "JournalMode=;" + ;
>
> "OEMCP=0;" + ;
>
> "BigInt=0;" + ;
>
> "JDConv=0;" + ;
>
> "TraceFile=;")
>
>
>
> SQLExec(m.liH, "create table EmplImport (id int primary key, dummy
> varchar(50));")
>
> SQLExec(m.liH, "insert into EmplImport (id, dummy) values (1,'testing');")
>
> SQLExec(m.liH, "select * from EmplImport;",'dbtest')
>
>
>
> SQLDISCONNECT(liH)
>
>
>
> I've tried this process about hundred differ ways with different
> combinations of paired keys in the connection string without success. I've
> used a DSN-less connection program that I wrote which works perfectly with
> SQL, MySQL and others and though I never fail to get a handle; the database
> file never physically exists in any path on the hard drive. Complete
> searches of my hard drive for the database name yield no results
>
>
>
> The code above gives me a value for m.liH which is greater than zero, I
> never get errors thrown, I always get a valid handle, the table can be
> created, the data inserted and I get a cursor back from the select named
> 'dbtest' with the exact data inserted on the previous line.
>
>
>
> I've been on this for about six hours and I'm no closer to making this work
> as a DSN-less project even though Whil seemed to imply in the book that this
> was his preferred method of doing things.
>
>
>
> HELP!
>
>
>
> Paul H. Tarver
> Email: <mailto:paul@tpcqpc.com> paul@tpcqpc.com
>
>
>
>
>
>
>
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