diff -r 7e08730da258 -r 4a1864c3e867 java/sql-dk/src/info/globalcode/sql/dk/SQLCommandNamed.java
--- a/java/sql-dk/src/info/globalcode/sql/dk/SQLCommandNamed.java	Mon Mar 04 17:06:42 2019 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,155 +0,0 @@
-/**
- * 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 static info.globalcode.sql.dk.Functions.findByName;
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.logging.Level;
-import java.util.logging.Logger;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-import java.util.regex.PatternSyntaxException;
-
-/**
- * Has named parameters.
- *
- * @author Ing. František Kučera (frantovo.cz)
- */
-public class SQLCommandNamed extends SQLCommand {
-
-	private static final Logger log = Logger.getLogger(SQLCommandNamed.class.getName());
-	private String namePrefix;
-	private String nameSuffix;
-	private List<NamedParameter> parameters;
-	private List<NamedParameter> parametersUsed = new ArrayList<>();
-	private StringBuilder updatedQuery;
-	private Pattern pattern;
-	private SQLCommandNumbered numbered;
-
-	public SQLCommandNamed(String query, List<NamedParameter> parameters, String namePrefix, String nameSuffix) {
-		super(query);
-		this.updatedQuery = new StringBuilder(query.length());
-		this.parameters = parameters;
-		this.namePrefix = namePrefix;
-		this.nameSuffix = nameSuffix;
-	}
-
-	@Override
-	public PreparedStatement prepareStatement(Connection c) throws SQLException {
-		return getSQLCommandNumbered().prepareStatement(c);
-	}
-
-	@Override
-	public void parametrize(PreparedStatement ps) throws SQLException {
-		getSQLCommandNumbered().parametrize(ps);
-	}
-
-	private void prepare() throws SQLException {
-		try {
-			buildPattern();
-			placeParametersAndUpdateQuery();
-			logPossiblyMissingParameters();
-		} catch (PatternSyntaxException e) {
-			throw new SQLException("Name prefix „" + namePrefix + "“ or suffix „" + nameSuffix + "“ contain a wrong regular expression. " + e.getLocalizedMessage(), e);
-		}
-	}
-
-	/**
-	 * @return SQL command with named parameters converted to SQL command with numbered parameters
-	 */
-	public SQLCommandNumbered getSQLCommandNumbered() throws SQLException {
-		if (numbered == null) {
-			prepare();
-			numbered = new SQLCommandNumbered(updatedQuery.toString(), parametersUsed);
-		}
-
-		return numbered;
-	}
-
-	/**
-	 * Builds a regexp pattern that matches all parameter names (with prefix/suffix) and which has
-	 * one group: parameter name (without prefix/suffix)
-	 */
-	private void buildPattern() throws PatternSyntaxException {
-		StringBuilder patternString = new StringBuilder();
-
-		patternString.append(namePrefix);
-		patternString.append("(?<paramName>");
-		for (int i = 0; i < parameters.size(); i++) {
-			patternString.append(Pattern.quote(parameters.get(i).getName()));
-			if (i < parameters.size() - 1) {
-				patternString.append("|");
-			}
-		}
-		patternString.append(")");
-		patternString.append(nameSuffix);
-
-		pattern = Pattern.compile(patternString.toString());
-	}
-
-	private void placeParametersAndUpdateQuery() {
-		final String originalQuery = getQuery();
-		Matcher m = pattern.matcher(originalQuery);
-
-		int lastPosition = 0;
-		while (m.find(lastPosition)) {
-			String name = m.group("paramName");
-
-			updatedQuery.append(originalQuery.substring(lastPosition, m.start()));
-			updatedQuery.append("?");
-
-			parametersUsed.add(findByName(parameters, name));
-
-			lastPosition = m.end();
-		}
-		updatedQuery.append(originalQuery.substring(lastPosition, originalQuery.length()));
-
-		for (NamedParameter definedParameter : parameters) {
-			if (findByName(parametersUsed, definedParameter.getName()) == null) {
-				/**
-				 * User can have predefined set of parameters and use them with different SQL
-				 * queries that use only subset of these parameters → just warning, not exception.
-				 */
-				log.log(Level.WARNING, "Parameter „{0}“ is defined but not used in the query: „{1}“", new Object[]{definedParameter.getName(), originalQuery});
-			}
-		}
-	}
-
-	private void logPossiblyMissingParameters() {
-		Pattern p = Pattern.compile(namePrefix + "(?<paramName>.+?)" + nameSuffix);
-		Matcher m = p.matcher(updatedQuery);
-		int lastPosition = 0;
-		while (m.find(lastPosition)) {
-			/**
-			 * We have not parsed and understood the SQL query; the parameter-like looking string
-			 * could be inside a literal part of the query → just warning, not exception.
-			 */
-			log.log(Level.WARNING, "Possibly missing parameter „{0}“ in the query: „{1}“", new Object[]{m.group("paramName"), getQuery()});
-			lastPosition = m.end();
-		}
-	}
-
-	@Override
-	public List<NamedParameter> getParameters() {
-		return parameters;
-	}
-}