1184 typedef struct Expr Expr;  typedef
2826 struct Expr {  struct
2828   char affExpr;          /* affinity, or RAISE type */  argument
2829   u8 op2;                /* TK_REGISTER/TK_TRUTH: original value of Expr.op  argument
2842   /* If the EP_TokenOnly flag is set in the Expr.flags mask, then no  argument
2847   Expr *pLeft;           /* Left subnode */  argument
2848   Expr *pRight;          /* Right subnode */  argument
2854   /* If the EP_Reduced flag is set in the Expr.flags mask, then no  argument
2860   int nHeight;           /* Height of the tree headed by this node */
2862   int iTable;            /* TK_COLUMN: cursor number of table holding column
2889 /* The following are the meanings of bits in the Expr.flags field.  argument