Fossil

*/
int db_step(Stmt *pStmt){
  int rc;
  rc = sqlite3_step(pStmt->pStmt);
  pStmt->nStep++;
  return rc;
}

/*
** Steps the SQL statement until there are no more rows.  Returns the
** total number of rows processed by this function.  If the pazValue
** parameter is non-zero, captures the iCol'th column value from each
** row (as text) and stores the resulting final array pointer into the
** pazValue parameter.  The caller of this function is responsible for
** calling the db_all_column_free() function later, passing it the
** result of this function along with the values of the pazValue1 and
** paiValue2 paramters.
*/
int db_all_column_text_and_int64(
  Stmt *pStmt,       /* The statement handle. */
  int iCol1,         /* The first column number to fetch from the results. */
  char ***pazValue1, /* Array of iCol1'th column values from query. */
  int iCol2,         /* The second column number to fetch from the results. */
  i64 **paiValue2    /* Array of iCol2'th column values from query. */
){
  int count = 0;
  char **azValue = 0;
  i64 *aiValue = 0;
  while( db_step(pStmt)==SQLITE_ROW ){
    count++;
    if( pazValue1 ){
      azValue = fossil_realloc(azValue, count * sizeof(char*));
      azValue[count] = fossil_strdup(db_column_text(pStmt, iCol1));
    }
    if( paiValue2 ){
      aiValue = fossil_realloc(aiValue, count * sizeof(i64));
      aiValue[count] = db_column_int64(pStmt, iCol2);
    }
  }
  if( pazValue1 ){
    *pazValue1 = azValue;
  }
  if( paiValue2 ){
    *paiValue2 = aiValue;
  }
  return count;
}

/*
** This function frees all the storage that was allocated by the
** db_all_column_text() function.
*/
void db_all_column_free(
  int count,         /* Number of string elements in the array. */
  char ***pazValue1, /* Array of iCol1'th column values from query. */
  i64 **paiValue2    /* Array of iCol2'th column values from query. */
){
  if( pazValue1 ){
    char **azValue = *pazValue1;
    int i;
    for(i=0; i<count; i++){
      fossil_free(azValue[i]);
      azValue[i] = 0;
    }
    fossil_free(azValue);
    *pazValue1 = 0;
  }
  if( paiValue2 ){
    fossil_free(*paiValue2);
    *paiValue2 = 0;
  }
}

/*
** Print warnings if a query is inefficient.
*/
static void db_stats(Stmt *pStmt){
#ifdef FOSSIL_DEBUG
  int c1, c2, c3;