You define a callback in your CREATE statement. Why? Where is it?
[EMAIL PROTECTED] wrote:
> I'm a beginning sqlite user (v3.5.8 for Linux). I use a c++ program to
> open a connection to my database with no issues, but when trying to
> exec any sql statements after that, i get SQLITE_BUSY (i.e. database
> is locked). Here is the code I use:
>
> int main() {
> sqlite3 *db;
> int ret; // Return value of sqlite3 calls
> string dbName = "emails.db"; // Database name
> char *zErrMsg;
>
> // Open a connection to the database
> ret = sqlite3_open(dbName.c_str(), &db);
> if (ret) {
> cout << "Can't open database: " << sqlite3_errmsg(db) << endl;
> sqlite3_close(db);
> exit(1);
> }
>
> string stmt = "CREATE TABLE IF NOT EXISTS";
> string cols = "Received (Sender varchar(80), Receiver varchar(80), Subject
> varchar(512), Message varchar(512))";
> stmt = stmt + " " + cols;
> ret = sqlite3_exec(db, stmt.c_str(), callback, 0, &zErrMsg);
> if (ret != SQLITE_OK) {
> cout << "SQL error: " << zErrMsg << endl;
> sqlite3_free(zErrMsg);
> }
>
> sqlite3_close(db);
> }
>
> // Based on the example code provided at www.sqlite.org
> static int callback(void *NotUsed, int argc, char **argv, char
> **azColName){
> int i;
> for(i=0; i<argc; i++){
> printf("%s = %s\n", azColName[i], argv[i] ? argv[i] : "NULL");
> }
> printf("\n");
> return 0;
> }
>
> Even if I change the sql statement, I always get SQLITE_BUSY. This is
> frustrating because this is a single-threaded app, so I have no idea
> why the database would be locked, especially before I have called any
> write operations to it (i.e. before a CREATE, INSERT, etc). Any ideas
> as to why this is happening and how I can fix it? Thanks.
> _______________________________________________
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