14641 typedef struct FKey FKey;  typedef
17587 struct FKey {  struct
17589   FKey *pNextFrom;  /* Next FKey with the same in pFrom. Next parent of pFrom */  argument
17591   FKey *pNextTo;    /* Next with the same zTo. Next child of zTo. */  argument
17592   FKey *pPrevTo;    /* Previous with the same zTo */  argument
17593   int nCol;         /* Number of columns in this key */
17595   u8 isDeferred;       /* True if constraint checking is deferred till COMMIT */
17596   u8 aAction[2];        /* ON DELETE and ON UPDATE actions, respectively */
17597   Trigger *apTrigger[2];/* Triggers for aAction[] actions */
17598   struct sColMap {      /* Mapping of columns in pFrom to columns in zTo */
17601   } aCol[1];            /* One entry for each of nCol columns */