1224 typedef struct VTable VTable;  typedef
1643   VTable **aVTrans;             /* Virtual tables with open transactions */
1644   VTable *pDisconnect;          /* Disconnect these in next sqlite3_prepare() */
2252 struct VTable {  struct
2260   VTable *pNext;            /* Next in linked list (see above) */  argument
2306       VTable *p;           /* List of VTable objects. */
5213 #  define sqlite3GetVTable(X,Y)  ((VTable*)0)
5220    void sqlite3VtabLock(VTable *);
5221    void sqlite3VtabUnlock(VTable *);
5226    VTable *sqlite3GetVTable(sqlite3*, Table*);
5256 int sqlite3VtabBegin(sqlite3 *, VTable *);