feat(spanner): add JSON type

Google APIs · copybara-github · commit fb5c4fbc1ded · 2021-06-23T18:19:22.000-07:00
PiperOrigin-RevId: 381156241
diff --git a/google/spanner/v1/type.proto b/google/spanner/v1/type.proto
@@ -128,4 +128,13 @@ enum TypeCode {
   // <br>`[+-][Digits].Digits[ExponentIndicator[+-]Digits]`
   // <br>(ExponentIndicator is `"e"` or `"E"`)
   NUMERIC = 10;
+
+  // Encoded as a JSON-formatted 'string' as described in RFC 7159. The
+  // following rules will be applied when parsing JSON input:
+  // - Whitespace will be stripped from the document.
+  // - If a JSON object has duplicate keys, only the first key will be
+  //   preserved.
+  // - Members of a JSON object are not guaranteed to have their order
+  //   preserved. JSON array elements will have their order preserved.
+  JSON = 11;
 }
