Index: src/vdbeblob.c
==================================================================
--- src/vdbeblob.c
+++ src/vdbeblob.c
@@ -270,10 +270,20 @@
         {OP_Halt,           0, 0, 0},  /* 5  */
       };
       Vdbe *v = (Vdbe *)pBlob->pStmt;
       int iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
       VdbeOp *aOp;
+
+#ifdef SQLITE_DEBUG
+      char *zName;
+      zName = sqlite3MPrintf(db, "-- sqlite3_blob_open(%s,%s,%s)",
+                              zDb, zTable, zColumn);
+      if( zName ){
+        sqlite3VdbeSetSql(v, zName, (int)strlen(zName), 0);
+        sqlite3DbFree(db, zName);
+      }
+#endif
 
       sqlite3VdbeAddOp4Int(v, OP_Transaction, iDb, wrFlag, 
                            pTab->pSchema->schema_cookie,
                            pTab->pSchema->iGeneration);
       sqlite3VdbeChangeP5(v, 1);