Function stat4dump

db/sqlglue.c:11574–11706

}

void stat4dump(int more, char *table, int istrace)
{
#ifndef PER_THREAD_MALLOC
    void *thread_oldm;
#endif
    void *sql_oldm;
    int rc;
    sqlite3 *db = NULL;

    thread_memcreate_with_save(128 * 1024, &thread_oldm);
    sql_mem_init_with_save(NULL, &sql_oldm);

    struct sql_thread *old_thd = pthread_getspecific(query_info_key);
    struct sql_thread *thd = start_sql_thread();
    Pthread_setspecific(query_info_key, thd);

    struct sqlclntstate clnt;
    start_internal_sql_clnt(&clnt);
    clnt.sql = "select * from sqlite_stat4"; //* from sqlite_master limit 1;";
    thd->clnt = &clnt;

    get_copy_rootpages(thd);
    sql_get_query_id(thd);
    if ((rc = get_curtran(thedb->bdb_env, &clnt)) != 0) {
        goto out;
    }
    if ((rc = sqlite3_open_serial("db", &db, 0)) != SQLITE_OK) {
        goto put;
    }
    clnt.in_sqlite_init = 1;
    if ((rc = sqlite3_exec(db, clnt.sql, NULL, NULL, NULL)) != SQLITE_OK) {
        goto close;
    }
    int (*outFunc)(const char *fmt, ...) = printf_logmsg_wrap;
    if (istrace) {
        ctrace("\n");
        outFunc = ctracewrap;
    }

    for (HashElem *i = sqliteHashFirst(&db->aDb[0].pSchema->idxHash); i;
         i = sqliteHashNext(i)) {
        Index *idx = sqliteHashData(i);
        if (table != NULL && strcmp(idx->pTable->zName, table))
            continue;
        if (idx->aSample == NULL)
            continue;
        outFunc("idx:%s.%s samples:%d cols:%d aAvgEq: ", idx->pTable->zName,
                idx->zName, idx->nSample, idx->nSampleCol);
        for (int j = 0; j < idx->nSampleCol; ++j) {
            outFunc("%d ", idx->aAvgEq[j]);
        }
        outFunc("\n");
        if (istrace)
            ctrace("\n");
        for (int k = 0; k < idx->nSample; ++k) {
            outFunc("sample:%d anEq:", k);
            for (int j = 0; j < idx->nSampleCol; ++j) {
                outFunc("%d ", idx->aSample[k].anEq[j]);