@@ -48,6 +48,7 @@ static int extractColumnType(Type type) {
 if (type.equals(Type.int64())) return Types.BIGINT;
 if (type.equals(Type.numeric())) return Types.NUMERIC;
 if (type.equals(Type.string())) return Types.NVARCHAR;
+if (type.equals(Type.json())) return Types.NVARCHAR;
 if (type.equals(Type.timestamp())) return Types.TIMESTAMP;
 if (type.getCode() == Code.ARRAY) return Types.ARRAY;
 return Types.OTHER;
@@ -106,6 +107,7 @@ static String getClassName(Type type) {
 if (type == Type.int64()) return Long.class.getName();
 if (type == Type.numeric()) return BigDecimal.class.getName();
 if (type == Type.string()) return String.class.getName();
+if (type == Type.json()) return String.class.getName();
 if (type == Type.timestamp()) return Timestamp.class.getName();
 if (type.getCode() == Code.ARRAY) {
 if (type.getArrayElementType() == Type.bool()) return Boolean[].class.getName();
@@ -115,6 +117,7 @@ static String getClassName(Type type) {
 if (type.getArrayElementType() == Type.int64()) return Long[].class.getName();
 if (type.getArrayElementType() == Type.numeric()) return BigDecimal[].class.getName();
 if (type.getArrayElementType() == Type.string()) return String[].class.getName();
+if (type.getArrayElementType() == Type.json()) return String[].class.getName();
 if (type.getArrayElementType() == Type.timestamp()) return Timestamp[].class.getName();
 }
 return null;

@@ -21,6 +21,7 @@
 import com.google.cloud.spanner.Struct;
 import com.google.cloud.spanner.Type;
 import com.google.cloud.spanner.Type.StructField;
+import com.google.cloud.spanner.Value;
 import com.google.cloud.spanner.ValueBinder;
 import com.google.common.collect.ImmutableList;
 import com.google.rpc.Code;
@@ -201,6 +202,9 @@ public ResultSet getResultSet(long startIndex, int count) throws SQLException {
 case STRING:
 builder = binder.to((String) value);
 break;
+case JSON:
+builder = binder.to(Value.json((String) value));
+break;
 case TIMESTAMP:
 builder = binder.to(JdbcTypeConverter.toGoogleTimestamp((Timestamp) value));
 break;

@@ -229,6 +229,32 @@ public Type getSpannerType() {
 return Type.string();
 }
 },
+JSON {
+@Override
+public int getSqlType() {
+return JsonType.VENDOR_TYPE_NUMBER;
+}
+
+@Override
+public Class<String> getJavaClass() {
+return String.class;
+}
+
+@Override
+public Code getCode() {
+return Code.JSON;
+}
+
+@Override
+public List<String> getArrayElements(ResultSet rs, int columnIndex) {
+return rs.getJsonList(columnIndex);
+}
+
+@Override
+public Type getSpannerType() {
+return Type.json();
+}
+},
 TIMESTAMP {
 @Override
 public int getSqlType() {

@@ -19,6 +19,7 @@
 import com.google.cloud.ByteArray;
 import com.google.cloud.spanner.Statement;
 import com.google.cloud.spanner.Statement.Builder;
+import com.google.cloud.spanner.Type;
 import com.google.cloud.spanner.Value;
 import com.google.cloud.spanner.ValueBinder;
 import com.google.cloud.spanner.jdbc.JdbcSqlExceptionFactory.JdbcSqlExceptionImpl;
@@ -264,6 +265,7 @@ private boolean isTypeSupported(int sqlType) {
 case Types.NCLOB:
 case Types.NUMERIC:
 case Types.DECIMAL:
+case JsonType.VENDOR_TYPE_NUMBER:
 return true;
 }
 return false;
@@ -315,6 +317,11 @@ private boolean isValidTypeAndValue(Object value, int sqlType) {
 return value instanceof Clob || value instanceof Reader;
 case Types.NCLOB:
 return value instanceof NClob || value instanceof Reader;
+case JsonType.VENDOR_TYPE_NUMBER:
+return value instanceof String
+|| value instanceof InputStream
+|| value instanceof Reader
+|| (value instanceof Value && ((Value) value).getType().getCode() == Type.Code.JSON);
 }
 return false;
 }
@@ -544,30 +551,34 @@ private Builder setParamWithKnownType(ValueBinder<Builder> binder, Object value,
 case Types.NCHAR:
 case Types.NVARCHAR:
 case Types.LONGNVARCHAR:
+String stringValue;
 if (value instanceof String) {
-return binder.to((String) value);
+stringValue = (String) value;
 } else if (value instanceof InputStream) {
-InputStreamReader reader =
-new InputStreamReader((InputStream) value, StandardCharsets.US_ASCII);
-try {
-return binder.to(CharStreams.toString(reader));
-} catch (IOException e) {
-throw JdbcSqlExceptionFactory.of(
-"could not set string from input stream", Code.INVALID_ARGUMENT, e);
-}
+stringValue = getStringFromInputStream((InputStream) value);
 } else if (value instanceof Reader) {
-try {
-return binder.to(CharStreams.toString((Reader) value));
-} catch (IOException e) {
-throw JdbcSqlExceptionFactory.of(
-"could not set string from reader", Code.INVALID_ARGUMENT, e);
-}
+stringValue = getStringFromReader((Reader) value);
 } else if (value instanceof URL) {
-return binder.to(((URL) value).toString());
+stringValue = ((URL) value).toString();
 } else if (value instanceof UUID) {
-return binder.to(((UUID) value).toString());
+stringValue = ((UUID) value).toString();
+} else {
+throw JdbcSqlExceptionFactory.of(value + " is not a valid string", Code.INVALID_ARGUMENT);
+}
+return binder.to(stringValue);
+case JsonType.VENDOR_TYPE_NUMBER:
+String jsonValue;
+if (value instanceof String) {
+jsonValue = (String) value;
+} else if (value instanceof InputStream) {
+jsonValue = getStringFromInputStream((InputStream) value);
+} else if (value instanceof Reader) {
+jsonValue = getStringFromReader((Reader) value);
+} else {
+throw JdbcSqlExceptionFactory.of(
+value + " is not a valid JSON value", Code.INVALID_ARGUMENT);
 }
-throw JdbcSqlExceptionFactory.of(value + " is not a valid string", Code.INVALID_ARGUMENT);
+return binder.to(Value.json(jsonValue));
 case Types.DATE:
 if (value instanceof Date) {
 return binder.to(JdbcTypeConverter.toGoogleDate((Date) value));
@@ -652,6 +663,25 @@ private Builder setParamWithKnownType(ValueBinder<Builder> binder, Object value,
 return null;
 }
 
+private String getStringFromInputStream(InputStream inputStream) throws SQLException {
+InputStreamReader reader = new InputStreamReader(inputStream, StandardCharsets.US_ASCII);
+try {
+return CharStreams.toString(reader);
+} catch (IOException e) {
+throw JdbcSqlExceptionFactory.of(
+"could not set string from input stream", Code.INVALID_ARGUMENT, e);
+}
+}
+
+private String getStringFromReader(Reader reader) throws SQLException {
+try {
+return CharStreams.toString(reader);
+} catch (IOException e) {
+throw JdbcSqlExceptionFactory.of(
+"could not set string from reader", Code.INVALID_ARGUMENT, e);
+}
+}
+
 /** Set the parameter value based purely on the type of the value. */
 private Builder setParamWithUnknownType(ValueBinder<Builder> binder, Object value)
 throws SQLException {
@@ -769,14 +799,16 @@ private Builder setArrayValue(ValueBinder<Builder> binder, int type, Object valu
 case Types.LONGNVARCHAR:
 case Types.CLOB:
 case Types.NCLOB:
-return binder.toStringArray((Iterable<String>) null);
+return binder.toStringArray(null);
+case JsonType.VENDOR_TYPE_NUMBER:
+return binder.toJsonArray(null);
 case Types.DATE:
-return binder.toDateArray((Iterable<com.google.cloud.Date>) null);
+return binder.toDateArray(null);
 case Types.TIME:
 case Types.TIME_WITH_TIMEZONE:
 case Types.TIMESTAMP:
 case Types.TIMESTAMP_WITH_TIMEZONE:
-return binder.toTimestampArray((Iterable<com.google.cloud.Timestamp>) null);
+return binder.toTimestampArray(null);
 case Types.BINARY:
 case Types.VARBINARY:
 case Types.LONGVARBINARY:
@@ -829,7 +861,11 @@ private Builder setArrayValue(ValueBinder<Builder> binder, int type, Object valu
 } else if (Timestamp[].class.isAssignableFrom(value.getClass())) {
 return binder.toTimestampArray(JdbcTypeConverter.toGoogleTimestamps((Timestamp[]) value));
 } else if (String[].class.isAssignableFrom(value.getClass())) {
-return binder.toStringArray(Arrays.asList((String[]) value));
+if (type == JsonType.VENDOR_TYPE_NUMBER) {
+return binder.toJsonArray(Arrays.asList((String[]) value));
+} else {
+return binder.toStringArray(Arrays.asList((String[]) value));
+}
 } else if (byte[][].class.isAssignableFrom(value.getClass())) {
 return binder.toBytesArray(JdbcTypeConverter.toGoogleBytes((byte[][]) value));
 }

@@ -142,6 +142,8 @@ public String getString(int columnIndex) throws SQLException {
 return isNull ? null : spanner.getBigDecimal(spannerIndex).toString();
 case STRING:
 return isNull ? null : spanner.getString(spannerIndex);
+case JSON:
+return isNull ? null : spanner.getJson(spannerIndex);
 case TIMESTAMP:
 return isNull ? null : spanner.getTimestamp(spannerIndex).toString();
 case STRUCT:
@@ -169,6 +171,7 @@ public boolean getBoolean(int columnIndex) throws SQLException {
 case STRING:
 return isNull ? false : Boolean.valueOf(spanner.getString(spannerIndex));
 case BYTES:
+case JSON:
 case DATE:
 case STRUCT:
 case TIMESTAMP:
@@ -198,6 +201,7 @@ public byte getByte(int columnIndex) throws SQLException {
 case STRING:
 return isNull ? (byte) 0 : checkedCastToByte(parseLong(spanner.getString(spannerIndex)));
 case BYTES:
+case JSON:
 case DATE:
 case STRUCT:
 case TIMESTAMP:
@@ -227,6 +231,7 @@ public short getShort(int columnIndex) throws SQLException {
 case STRING:
 return isNull ? 0 : checkedCastToShort(parseLong(spanner.getString(spannerIndex)));
 case BYTES:
+case JSON:
 case DATE:
 case STRUCT:
 case TIMESTAMP:
@@ -256,6 +261,7 @@ public int getInt(int columnIndex) throws SQLException {
 case STRING:
 return isNull ? 0 : checkedCastToInt(parseLong(spanner.getString(spannerIndex)));
 case BYTES:
+case JSON:
 case DATE:
 case STRUCT:
 case TIMESTAMP:
@@ -283,6 +289,7 @@ public long getLong(int columnIndex) throws SQLException {
 case STRING:
 return isNull ? 0L : parseLong(spanner.getString(spannerIndex));
 case BYTES:
+case JSON:
 case DATE:
 case STRUCT:
 case TIMESTAMP:
@@ -310,6 +317,7 @@ public float getFloat(int columnIndex) throws SQLException {
 case STRING:
 return isNull ? 0 : checkedCastToFloat(parseDouble(spanner.getString(spannerIndex)));
 case BYTES:
+case JSON:
 case DATE:
 case STRUCT:
 case TIMESTAMP:
@@ -337,6 +345,7 @@ public double getDouble(int columnIndex) throws SQLException {
 case STRING:
 return isNull ? 0 : parseDouble(spanner.getString(spannerIndex));
 case BYTES:
+case JSON:
 case DATE:
 case STRUCT:
 case TIMESTAMP:
@@ -372,6 +381,7 @@ public Date getDate(int columnIndex) throws SQLException {
 case INT64:
 case NUMERIC:
 case BYTES:
+case JSON:
 case STRUCT:
 case ARRAY:
 default:
@@ -396,6 +406,7 @@ public Time getTime(int columnIndex) throws SQLException {
 case INT64:
 case NUMERIC:
 case BYTES:
+case JSON:
 case STRUCT:
 case ARRAY:
 default:
@@ -421,6 +432,7 @@ public Timestamp getTimestamp(int columnIndex) throws SQLException {
 case INT64:
 case NUMERIC:
 case BYTES:
+case JSON:
 case STRUCT:
 case ARRAY:
 default:
@@ -576,6 +588,7 @@ private Object getObject(Type type, int columnIndex) throws SQLException {
 if (type == Type.int64()) return getLong(columnIndex);
 if (type == Type.numeric()) return getBigDecimal(columnIndex);
 if (type == Type.string()) return getString(columnIndex);
+if (type == Type.json()) return getString(columnIndex);
 if (type == Type.timestamp()) return getTimestamp(columnIndex);
 if (type.getCode() == Code.ARRAY) return getArray(columnIndex);
 throw JdbcSqlExceptionFactory.of(
@@ -664,6 +677,7 @@ private BigDecimal getBigDecimal(int columnIndex, boolean fixedScale, int scale)
 e);
 }
 case BYTES:
+case JSON:
 case DATE:
 case TIMESTAMP:
 case STRUCT:
@@ -749,6 +763,7 @@ public Date getDate(int columnIndex, Calendar cal) throws SQLException {
 case INT64:
 case NUMERIC:
 case BYTES:
+case JSON:
 case STRUCT:
 case ARRAY:
 default:
@@ -778,6 +793,7 @@ public Time getTime(int columnIndex, Calendar cal) throws SQLException {
 case INT64:
 case NUMERIC:
 case BYTES:
+case JSON:
 case STRUCT:
 case ARRAY:
 default:
@@ -810,6 +826,7 @@ public Timestamp getTimestamp(int columnIndex, Calendar cal) throws SQLException
 case INT64:
 case NUMERIC:
 case BYTES:
+case JSON:
 case STRUCT:
 case ARRAY:
 default:

@@ -81,7 +81,8 @@ static Object convert(Object value, Type type, Class<?> targetType) throws SQLEx
 }
 if (targetType.equals(byte[].class)) {
 if (type.getCode() == Code.BYTES) return value;
-if (type.getCode() == Code.STRING) return ((String) value).getBytes(UTF8);
+if (type.getCode() == Code.STRING || type.getCode() == Code.JSON)
+return ((String) value).getBytes(UTF8);
 }
 if (targetType.equals(Boolean.class)) {
 if (type.getCode() == Code.BOOL) return value;
@@ -186,6 +187,8 @@ private static Value convertToSpannerValue(Object value, Type type) throws SQLEx
 case TIMESTAMP:
 return Value.timestampArray(
 toGoogleTimestamps((java.sql.Timestamp[]) ((java.sql.Array) value).getArray()));
+case JSON:
+return Value.jsonArray(Arrays.asList((String[]) ((java.sql.Array) value).getArray()));
 case STRUCT:
 default:
 throw JdbcSqlExceptionFactory.of(
@@ -207,6 +210,8 @@ private static Value convertToSpannerValue(Object value, Type type) throws SQLEx
 return Value.string((String) value);
 case TIMESTAMP:
 return Value.timestamp(toGoogleTimestamp((java.sql.Timestamp) value));
+case JSON:
+return Value.json((String) value);
 case STRUCT:
 default:
 throw JdbcSqlExceptionFactory.of(