piCol            106740 ext/sqlite3/libsqlite/sqlite3.c   int *piCol           /* Write index of pSrc->a[*piTab].pTab->aCol[] here */
piCol            106745 ext/sqlite3/libsqlite/sqlite3.c   assert( (piTab==0)==(piCol==0) );  /* Both or neither are NULL */
piCol            106751 ext/sqlite3/libsqlite/sqlite3.c         *piCol = iCol;