diff -r 7e08730da258 -r 4a1864c3e867 java/sql-dk/src/main/java/info/globalcode/sql/dk/SQLType.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/java/sql-dk/src/main/java/info/globalcode/sql/dk/SQLType.java	Mon Mar 04 20:15:24 2019 +0100
@@ -0,0 +1,95 @@
+/**
+ * SQL-DK
+ * Copyright © 2013 František Kučera (frantovo.cz)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package info.globalcode.sql.dk;
+
+import java.sql.Types;
+
+/**
+ * Data types of SQL parameters.
+ *
+ * @author Ing. František Kučera (frantovo.cz)
+ */
+public enum SQLType {
+
+	/**
+	 * Names must be upper case – user input is also converted to upper case → case insensitive
+	 */
+	BIT(Types.BIT),
+	TINYINT(Types.TINYINT),
+	SMALLINT(Types.SMALLINT),
+	INTEGER(Types.INTEGER),
+	BIGINT(Types.BIGINT),
+	FLOAT(Types.FLOAT),
+	REAL(Types.REAL),
+	DOUBLE(Types.DOUBLE),
+	NUMERIC(Types.NUMERIC),
+	DECIMAL(Types.DECIMAL),
+	CHAR(Types.CHAR),
+	VARCHAR(Types.VARCHAR),
+	LONGVARCHAR(Types.LONGVARCHAR),
+	DATE(Types.DATE),
+	TIME(Types.TIME),
+	TIMESTAMP(Types.TIMESTAMP),
+	BINARY(Types.BINARY),
+	VARBINARY(Types.VARBINARY),
+	LONGVARBINARY(Types.LONGVARBINARY),
+	NULL(Types.NULL),
+	OTHER(Types.OTHER),
+	JAVA_OBJECT(Types.JAVA_OBJECT),
+	DISTINCT(Types.DISTINCT),
+	STRUCT(Types.STRUCT),
+	ARRAY(Types.ARRAY),
+	BLOB(Types.BLOB),
+	CLOB(Types.CLOB),
+	REF(Types.REF),
+	DATALINK(Types.DATALINK),
+	BOOLEAN(Types.BOOLEAN),
+	ROWID(Types.ROWID),
+	NCHAR(Types.NCHAR),
+	NVARCHAR(Types.NVARCHAR),
+	LONGNVARCHAR(Types.LONGNVARCHAR),
+	NCLOB(Types.NCLOB),
+	SQLXML(Types.SQLXML);
+	/** value from java.sql.Types */
+	private int code;
+
+	private SQLType(int code) {
+		this.code = code;
+	}
+
+	/**
+	 * @see java.sql.Types.Types
+	 */
+	public int getCode() {
+		return code;
+	}
+
+	/**
+	 * @param code see {@linkplain java.sql.Types.Types}
+	 * @return found SQLType
+	 * @throws IllegalArgumentException if no data type has given code
+	 */
+	public static SQLType valueOf(int code) {
+		for (SQLType t : values()) {
+			if (t.code == code) {
+				return t;
+			}
+		}
+		throw new IllegalArgumentException("No data type has code: " + code);
+	}
+}