TK_CONCAT
case TK_CONCAT: {
case TK_CONCAT:
expr(A) ::= expr(X) CONCAT expr(Y). {A = sqliteExpr(TK_CONCAT, X, Y, 0);}
*tokenType = TK_CONCAT;
else return TK_CONCAT; /* '..' */
case TK_CONCAT: return OPR_CONCAT;