From ab1e6b419292dfff2162e00a3e8a614b851c6ed4 Mon Sep 17 00:00:00 2001
From: mrks <markus@dreseler.de>
Date: Tue, 23 Apr 2019 11:35:17 +0200
Subject: [PATCH] Fix printing of EXISTS (SELECT) (#114)

* Fix printing of EXISTS (SELECT)

* Update sqlhelper.cpp
---
 src/util/sqlhelper.cpp | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/src/util/sqlhelper.cpp b/src/util/sqlhelper.cpp
index 8e4aec4..353d8c2 100755
--- a/src/util/sqlhelper.cpp
+++ b/src/util/sqlhelper.cpp
@@ -88,19 +88,28 @@ namespace hsql {
     case kOpNot:
       inprint("NOT", numIndent);
       break;
+    case kOpExists:
+      inprint("EXISTS", numIndent);
+      break;
     default:
       inprintU(expr->opType, numIndent);
       break;
     }
-    printExpression(expr->expr, numIndent + 1);
-    if (expr->expr2 != nullptr) {
-        printExpression(expr->expr2, numIndent + 1);
-    } else if (expr->exprList != nullptr) {
-        for (Expr* e : *expr->exprList) printExpression(e, numIndent + 1);
+
+    if (expr->select) {
+      printSelectStatementInfo(expr->select, numIndent + 1);
+    } else {
+      printExpression(expr->expr, numIndent + 1);
+      if (expr->expr2 != nullptr) {
+          printExpression(expr->expr2, numIndent + 1);
+      } else if (expr->exprList != nullptr) {
+          for (Expr* e : *expr->exprList) printExpression(e, numIndent + 1);
+      }
     }
   }
 
   void printExpression(Expr* expr, uintmax_t numIndent) {
+    if (!expr) return;
     switch (expr->type) {
     case kExprStar:
       inprint("*", numIndent);