SQLITE_STATUS_MEMORY_USED,
  SQLITE_STATUS_PAGECACHE_USED,
  SQLITE_STATUS_PAGECACHE_OVERFLOW,
  SQLITE_STATUS_SCRATCH_USED,
  SQLITE_STATUS_SCRATCH_OVERFLOW,
  SQLITE_STATUS_MALLOC_SIZE,
  SQLITE_STATUS_PARSER_STACK,
  SQLITE_STATUS_PAGECACHE_SIZE,
  SQLITE_STATUS_SCRATCH_SIZE,
  SQLITE_STATUS_MALLOC_COUNT —
Status Parameters
#define SQLITE_STATUS_MEMORY_USED
#define SQLITE_STATUS_PAGECACHE_USED
#define SQLITE_STATUS_PAGECACHE_OVERFLOW
#define SQLITE_STATUS_SCRATCH_USED
#define SQLITE_STATUS_SCRATCH_OVERFLOW
#define SQLITE_STATUS_MALLOC_SIZE
#define SQLITE_STATUS_PARSER_STACK
#define SQLITE_STATUS_PAGECACHE_SIZE
#define SQLITE_STATUS_SCRATCH_SIZE
#define SQLITE_STATUS_MALLOC_COUNT
These integer constants designate various run-time status parameters that can be
  returned by sqlite3_status().
  - SQLITE_STATUS_MEMORY_USED
- This parameter is the current amount of memory checked out using
      sqlite3_malloc(), either directly or indirectly. The figure includes calls
      made to sqlite3_malloc() by the application and internal memory usage by
      the SQLite library. Auxiliary page-cache memory controlled by
      SQLITE_CONFIG_PAGECACHE is not included in this parameter. The amount
      returned is the sum of the allocation sizes as reported by the xSize
      method in sqlite3_mem_methods.
- SQLITE_STATUS_MALLOC_SIZE
- This parameter records the largest memory allocation request handed to
      sqlite3_malloc() or sqlite3_realloc() (or their internal equivalents).
      Only the value returned in the *pHighwater parameter to sqlite3_status()
      is of interest. The value written into the *pCurrent parameter is
      undefined.
- SQLITE_STATUS_MALLOC_COUNT
- This parameter records the number of separate memory allocations currently
      checked out.
- SQLITE_STATUS_PAGECACHE_USED
- This parameter returns the number of pages used out of the pagecache
      memory allocator that was configured using SQLITE_CONFIG_PAGECACHE. The
      value returned is in pages, not in bytes.
- SQLITE_STATUS_PAGECACHE_OVERFLOW
- This parameter returns the number of bytes of page cache allocation which
      could not be satisfied by the SQLITE_CONFIG_PAGECACHE buffer and where
      forced to overflow to sqlite3_malloc(). The returned value includes
      allocations that overflowed because they where too large (they were larger
      than the "sz" parameter to SQLITE_CONFIG_PAGECACHE) and
      allocations that overflowed because no space was left in the page
    cache.
- SQLITE_STATUS_PAGECACHE_SIZE
- This parameter records the largest memory allocation request handed to
      pagecache memory allocator. Only the value returned in the *pHighwater
      parameter to sqlite3_status() is of interest. The value written into the
      *pCurrent parameter is undefined.
- SQLITE_STATUS_SCRATCH_USED
- No longer used.
- SQLITE_STATUS_SCRATCH_OVERFLOW
- No longer used.
- SQLITE_STATUS_SCRATCH_SIZE
- No longer used.
- SQLITE_STATUS_PARSER_STACK
- The *pHighwater parameter records the deepest parser stack. The *pCurrent
      value is undefined. The *pHighwater value is only meaningful if SQLite is
      compiled with YYTRACKMAXSTACKDEPTH.
New status parameters may be added from time to time.