Index: src/sqlite3ext.h
==================================================================
--- src/sqlite3ext.h
+++ src/sqlite3ext.h
@@ -317,10 +317,13 @@
                             void (*xValue)(sqlite3_context*),
                             void (*xInv)(sqlite3_context*,int,sqlite3_value**),
                             void(*xDestroy)(void*));
   /* Version 3.26.0 and later */
   const char *(*normalized_sql)(sqlite3_stmt*);
+  /* Version 3.28.0 and later */
+  int (*stmt_isexplain)(sqlite3_stmt*);
+  int (*value_frombind)(sqlite3_value*);
 };
 
 /*
 ** This is the function signature used for all extension entry points.  It
 ** is also defined in the file "loadext.c".
@@ -606,10 +609,13 @@
 #define sqlite3_str_value              sqlite3_api->str_value
 /* Version 3.25.0 and later */
 #define sqlite3_create_window_function sqlite3_api->create_window_function
 /* Version 3.26.0 and later */
 #define sqlite3_normalized_sql         sqlite3_api->normalized_sql
+/* Version 3.28.0 and later */
+#define sqlite3_stmt_isexplain         sqlite3_api->isexplain
+#define sqlite3_value_frombind         sqlite3_api->frombind
 #endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */
 
 #if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
   /* This case when the file really is being compiled as a loadable 
   ** extension */

Index: src/vdbeInt.h
==================================================================
--- src/vdbeInt.h
+++ src/vdbeInt.h
@@ -248,11 +248,11 @@
 #define MEM_AffMask   0x001f   /* Mask of affinity bits */
 #define MEM_FromBind  0x0020   /* Value originates from sqlite3_bind() */
 /* Available          0x0040   */
 #define MEM_Undefined 0x0080   /* Value is undefined */
 #define MEM_Cleared   0x0100   /* NULL set by OP_Null, not from data */
-#define MEM_TypeMask  0xc1ff   /* Mask of type bits */
+#define MEM_TypeMask  0xc1df   /* Mask of type bits */
 
 
 /* Whenever Mem contains a valid string or blob representation, one of
 ** the following flags must be set to determine the memory management
 ** policy for Mem.z.  The MEM_Term flag tells us whether or not the