63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
#include <stdio.h>
|
|
#include "sqlite3.h"
|
|
|
|
int main(int argc, char const *argv[]) {
|
|
sqlite3 *db;
|
|
char * err_msg = 0;
|
|
|
|
int rc = sqlite3_open("test.db", &db);
|
|
|
|
if (rc != SQLITE_OK) {
|
|
fprintf(stderr, "Cannot open database: %s\n", sqlite3_errmsg(db));
|
|
sqlite3_close(db);
|
|
|
|
return 1;
|
|
}
|
|
|
|
char *sql =
|
|
"DROP TABLE IF EXISTS t;"
|
|
"CREATE TABLE t(id BIGINT);";
|
|
|
|
rc = sqlite3_exec(db, sql, 0, 0, &err_msg);
|
|
|
|
if (rc != SQLITE_OK) {
|
|
fprintf(stderr, "SQL error: %s\n", err_msg);
|
|
|
|
sqlite3_free(err_msg);
|
|
sqlite3_close(db);
|
|
|
|
return 1;
|
|
}
|
|
|
|
// Write a lot of data
|
|
int nrows = 100000;
|
|
int batch = 1000;
|
|
char tsql[1024];
|
|
|
|
int v = 0;
|
|
for (int k = 0; k < nrows / batch; k++) {
|
|
sqlite3_exec(db, "begin;", 0, 0, &err_msg);
|
|
|
|
for (int i = 0; i < batch; i++) {
|
|
v++;
|
|
sprintf(tsql, "insert into t values (%d)", v);
|
|
rc = sqlite3_exec(db, tsql, 0, 0, &err_msg);
|
|
|
|
if (rc != SQLITE_OK) {
|
|
fprintf(stderr, "SQL error: %s\n", err_msg);
|
|
|
|
sqlite3_free(err_msg);
|
|
sqlite3_close(db);
|
|
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
sqlite3_exec(db, "commit;", 0, 0, &err_msg);
|
|
}
|
|
|
|
sqlite3_close(db);
|
|
|
|
return 0;
|
|
}
|