Question

I have three queries that I’m running through SQLite. These are what I’m running; the first is the table declaration and then the next 3 are the actual queries.

Declaration:

“CREATE TABLE IF NOT EXISTS items (busid INTEGER PRIMARY KEY, ipaddr TEXT, time TEXT DEFAULT (NOW()));”

Queries:

1. (Works) “INSERT INTO items (time, ipaddr) VALUES (‘test’, ‘192.168.1.1’);”
2. (Crashes) “INSERT INTO items (busid, ipaddr) VALUES (10, ‘192.168.1.1’);”
3. (Crashes) “INSERT INTO items (ipaddr) VALUES (‘192.168.1.1’);”

Query 1 works fine, whereas queries 2 and 3 cause a crash by means of an EXC_BAD_ACCESS within sqlite3ExprCodeTarget. Tracing back, I discover the last point my code touches is a sqlite3_prepare_v2() statement, which passes a valid database/string/etc. and, as I said, works fine with statement 1 above but not 2 or 3. What’s wrong with this, and how can I fix it? Thanks.

EDIT 1: To clarify, Query 1, 2, and 3 are run separately in different runs of the program, not in sequence, and the database is destroyed in between runs, so running Query 1 has no effect on running Query 2 after the reset.

EDIT 2: Example C++ source file showing issue:

#include <iostream>
using namespace std;
#include <sqlite3.h>

int main (int argc, const char * argv[]) {

    sqlite3 *db;
    sqlite3_open("/Users/Justin/Desktop/test.db", &db);

    string createQuery = "CREATE TABLE IF NOT EXISTS items (busid INTEGER PRIMARY KEY, ipaddr TEXT, time TEXT NOT NULL DEFAULT (NOW()));";
    sqlite3_stmt *createStmt;
    cout << "Creating Table Statement" << endl;
    sqlite3_prepare_v2(db, createQuery.c_str(), createQuery.size(), &createStmt, NULL);
    cout << "Stepping Table Statement" << endl;
    if (sqlite3_step(createStmt) != SQLITE_DONE) cout << "Didn't Create Table!" << endl;

    // COMMENT OUT UNUSED ONES
    // First one works, second and third ones fail.

    string insertQuery = "INSERT INTO items (time, ipaddr) VALUES ('test', '192.168.1.1');"; // WORKS!
    //string insertQuery = "INSERT INTO items (busid, ipaddr) VALUES (10, '192.168.1.1');"; // FAILS!
    //string insertQuery = "INSERT INTO items (ipaddr) VALUES ('192.168.1.1');"; // FAILS!

    sqlite3_stmt *insertStmt;
    cout << "Creating Insert Statement" << endl;
    sqlite3_prepare_v2(db, insertQuery.c_str(), insertQuery.size(), &insertStmt, NULL);
    cout << "Stepping Insert Statement" << endl;
    if (sqlite3_step(insertStmt) != SQLITE_DONE) cout << "Didn't Insert Item!" << endl;

    cout << "Success!" << endl;
}

Just set the database path in the source code to wherever you want it to create the test database.

Answer 1

i downloaded your source, compiled and ran with each line uncommented in turn, all works ok

sqlite version 3.6.23.1

redhat 5 32 bit

so i guess the answer is – upgrade to latest version of sqlite