diff --git a/src/de/steamwar/sql/NodeMember.java b/src/de/steamwar/sql/NodeMember.java
index f0de53c..32036ab 100644
--- a/src/de/steamwar/sql/NodeMember.java
+++ b/src/de/steamwar/sql/NodeMember.java
@@ -24,7 +24,6 @@ import de.steamwar.sql.internal.SelectStatement;
 import de.steamwar.sql.internal.Statement;
 import de.steamwar.sql.internal.Table;
 import lombok.AllArgsConstructor;
-import lombok.Getter;
 
 import java.util.HashSet;
 import java.util.Set;
@@ -32,6 +31,10 @@ import java.util.Set;
 @AllArgsConstructor
 public class NodeMember {
 
+    public static void init() {
+        // enforce class initialization
+    }
+
     private static final Table<NodeMember> table = new Table<>(NodeMember.class);
     private static final SelectStatement<NodeMember> getNodeMember = table.select(Table.PRIMARY);
     private static final SelectStatement<NodeMember> getNodeMembers = table.selectFields("Node");
@@ -39,15 +42,21 @@ public class NodeMember {
     private static final Statement create = table.insertAll();
     private static final Statement delete = table.delete(Table.PRIMARY);
 
-    @Getter
     @Field(keys = {Table.PRIMARY})
-    private final int node;
-    @Getter
+    private final int nodeId;
     @Field(keys = {Table.PRIMARY})
-    private final int member;
+    private final int userId;
+
+    public int getNodeId() {
+        return nodeId;
+    }
+
+    public int getUserId() {
+        return userId;
+    }
 
     public void delete() {
-        delete.update(node, member);
+        delete.update(nodeId, userId);
     }
 
     public static NodeMember createNodeMember(int node, int member) {
diff --git a/src/de/steamwar/sql/Replay.java b/src/de/steamwar/sql/Replay.java
index 90d2b34..a90e239 100644
--- a/src/de/steamwar/sql/Replay.java
+++ b/src/de/steamwar/sql/Replay.java
@@ -28,6 +28,7 @@ import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.nio.file.Files;
+import java.nio.file.StandardCopyOption;
 import java.sql.SQLException;
 
 @AllArgsConstructor
@@ -36,9 +37,9 @@ public class Replay {
     static {
         new SqlTypeMapper<>(File.class, "BLOB", (rs, identifier) -> {
             try {
-                File file = File.createTempFile("replay", "replay");
+                File file = File.createTempFile("replay", ".replay");
                 file.deleteOnExit();
-                Files.copy(rs.getBinaryStream(identifier), file.toPath());
+                Files.copy(rs.getBinaryStream(identifier), file.toPath(), StandardCopyOption.REPLACE_EXISTING);
                 return file;
             } catch (IOException e) {
                 throw new SQLException(e);
diff --git a/src/de/steamwar/sql/SWException.java b/src/de/steamwar/sql/SWException.java
index 4354867..0a8ece3 100644
--- a/src/de/steamwar/sql/SWException.java
+++ b/src/de/steamwar/sql/SWException.java
@@ -40,7 +40,7 @@ public class SWException {
     private static final Table<SWException> table = new Table<>(SWException.class, "Exception");
     private static final Statement insert = table.insertFields("server", "message", "stacktrace");
 
-    @Field(keys = {Table.PRIMARY})
+    @Field(keys = {Table.PRIMARY}, autoincrement = true)
     private final int id;
     @Field(def = "CURRENT_TIMESTAMP")
     private final Timestamp time;
diff --git a/src/de/steamwar/sql/SchematicNode.java b/src/de/steamwar/sql/SchematicNode.java
index cc62acc..be7f1b1 100644
--- a/src/de/steamwar/sql/SchematicNode.java
+++ b/src/de/steamwar/sql/SchematicNode.java
@@ -72,6 +72,10 @@ public class SchematicNode {
     private static final SelectStatement<SchematicNode> allAccessibleByUser = new SelectStatement<>(table, "WITH RECURSIVE RSN as (" + nodeSelectCreator("s.") + "s LEFT JOIN NodeMember n ON s.NodeId = n.NodeId WHERE (s.NodeOwner = ? OR n.UserId = ?) GROUP BY s.NodeId UNION " + nodeSelectCreator("SN.") + "AS SN, RSN WHERE SN.ParentNode = RSN.NodeId) SELECT * FROM RSN ORDER BY NodeName");
     private static final SelectStatement<SchematicNode> allParentsOfNode = new SelectStatement<>(table, "WITH RECURSIVE RSN AS (" + nodeSelectCreator("") + "WHERE NodeId = ? UNION " + nodeSelectCreator("SN.") + "SN, RSN WHERE RSN.ParentNode = SN.NodeId) SELECT * FROM RSN ORDER BY NodeName");
 
+    static {
+        NodeMember.init();
+    }
+
     @Field(keys = {Table.PRIMARY}, autoincrement = true)
     private final int nodeId;
     @Field(keys = {"OwnerNameParent"})
@@ -476,7 +480,7 @@ public class SchematicNode {
         final Set<NodeMember> nodeMembers = NodeMember.getSchematics(user.getId());
         AtomicInteger i = new AtomicInteger();
         i.set(currentNode.getId());
-        while (currentNode.getParentNode() != null && nodeMembers.stream().noneMatch(nodeMember -> nodeMember.getNode() == i.get())) {
+        while (currentNode.getParentNode() != null && nodeMembers.stream().noneMatch(nodeMember -> nodeMember.getNodeId() == i.get())) {
             currentNode = currentNode.getParentNode();
             i.set(currentNode.getId());
             builder.insert(0, split)
diff --git a/src/de/steamwar/sql/SteamwarUser.java b/src/de/steamwar/sql/SteamwarUser.java
index c5ccbd5..874643f 100644
--- a/src/de/steamwar/sql/SteamwarUser.java
+++ b/src/de/steamwar/sql/SteamwarUser.java
@@ -101,7 +101,7 @@ public class SteamwarUser {
 		this.leader = leader;
 		this.locale = locale;
 		this.manualLocale = manualLocale;
-		this.discordId = discordId != 0 ? discordId : null;
+		this.discordId = discordId != null && discordId != 0 ? discordId : null;
 
 		usersById.put(id, this);
 		usersByName.put(userName.toLowerCase(), this);
@@ -118,7 +118,16 @@ public class SteamwarUser {
 	public Locale getLocale() {
 		if(locale != null)
 			return locale;
-		return Locale.getDefault(); //TODO test correct locale on join (z.B. FightSystem Hotbarkit)
+		return Locale.getDefault();
+	}
+
+	public void setLocale(Locale locale, boolean manualLocale) {
+		if (locale == null || (this.manualLocale && !manualLocale))
+			return;
+
+		this.locale = locale;
+		this.manualLocale = manualLocale;
+		updateLocale.update(locale.toLanguageTag(), manualLocale, id);
 	}
 
 	public static SteamwarUser get(String userName){
diff --git a/src/de/steamwar/sql/internal/SelectStatement.java b/src/de/steamwar/sql/internal/SelectStatement.java
index 0f4a329..e17dcb7 100644
--- a/src/de/steamwar/sql/internal/SelectStatement.java
+++ b/src/de/steamwar/sql/internal/SelectStatement.java
@@ -31,7 +31,7 @@ public class SelectStatement<T> extends Statement {
     private final Table<T> table;
 
     SelectStatement(Table<T> table, String... kfields) {
-        this(table, "SELECT " + Arrays.stream(table.fields).map(f -> f.identifier).collect(Collectors.joining(", ")) + " FROM " + table.name + " WHERE " + Arrays.stream(kfields).map(f -> f + " = ?").collect(Collectors.joining(", ")));
+        this(table, "SELECT " + Arrays.stream(table.fields).map(f -> f.identifier).collect(Collectors.joining(", ")) + " FROM " + table.name + " WHERE " + Arrays.stream(kfields).map(f -> f + " = ?").collect(Collectors.joining(" AND ")));
     }
 
     public SelectStatement(Table<T> table, String sql) {
diff --git a/src/de/steamwar/sql/internal/SqlTypeMapper.java b/src/de/steamwar/sql/internal/SqlTypeMapper.java
index 5c41010..ae3b7c8 100644
--- a/src/de/steamwar/sql/internal/SqlTypeMapper.java
+++ b/src/de/steamwar/sql/internal/SqlTypeMapper.java
@@ -47,7 +47,7 @@ public final class SqlTypeMapper<T> {
     public static <T extends Enum<T>> void nameEnumMapper(Class<T> type) {
         new SqlTypeMapper<>(
                 type,
-                "VARCHAR(" + Arrays.stream(type.getEnumConstants()).map(e -> e.name().length()).max(Integer::compareTo).get() + ")",
+                "VARCHAR(" + Arrays.stream(type.getEnumConstants()).map(e -> e.name().length()).max(Integer::compareTo).orElse(0) + ")",
                 (rs, identifier) -> Enum.valueOf(type, rs.getString(identifier)),
                 (st, index, value) -> st.setString(index, value.name())
         );
@@ -57,7 +57,7 @@ public final class SqlTypeMapper<T> {
         primitiveMapper(boolean.class, Boolean.class, "BOOLEAN", ResultSet::getBoolean, PreparedStatement::setBoolean);
         primitiveMapper(byte.class, Byte.class, "INTEGER(1)", ResultSet::getByte, PreparedStatement::setByte);
         primitiveMapper(short.class, Short.class, "INTEGER(2)", ResultSet::getShort, PreparedStatement::setShort);
-        primitiveMapper(int.class, Integer.class, "INTEGER(4)", ResultSet::getInt, PreparedStatement::setInt);
+        primitiveMapper(int.class, Integer.class, "INTEGER", ResultSet::getInt, PreparedStatement::setInt);
         primitiveMapper(long.class, Long.class, "INTEGER(8)", ResultSet::getLong, PreparedStatement::setLong);
         primitiveMapper(float.class, Float.class, "REAL", ResultSet::getFloat, PreparedStatement::setFloat);
         primitiveMapper(double.class, Double.class, "REAL", ResultSet::getDouble, PreparedStatement::setDouble);
diff --git a/src/de/steamwar/sql/internal/Statement.java b/src/de/steamwar/sql/internal/Statement.java
index 152784f..88aa5d6 100644
--- a/src/de/steamwar/sql/internal/Statement.java
+++ b/src/de/steamwar/sql/internal/Statement.java
@@ -26,6 +26,7 @@ import java.sql.*;
 import java.util.*;
 import java.util.function.Consumer;
 import java.util.function.Supplier;
+import java.util.function.UnaryOperator;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -38,15 +39,17 @@ public class Statement implements AutoCloseable {
     private static final int MAX_CONNECTIONS;
     private static final Supplier<Connection> conProvider;
     static final Consumer<Table<?>> schemaCreator;
+    static final String ON_DUPLICATE_KEY;
+    static final UnaryOperator<String> upsertWrapper;
 
-    private static final boolean mysqlMode;
-    private static final boolean productionDatabase;
+    private static final boolean MYSQL_MODE;
+    private static final boolean PRODUCTION_DATABASE;
 
     static {
         File file = new File(System.getProperty("user.home"), "mysql.properties");
-        mysqlMode = file.exists();
+        MYSQL_MODE = file.exists();
 
-        if(mysqlMode) {
+        if(MYSQL_MODE) {
             Properties properties = new Properties();
             try {
                 properties.load(new FileReader(file));
@@ -58,7 +61,7 @@ public class Statement implements AutoCloseable {
             String user = properties.getProperty("user");
             String password = properties.getProperty("password");
 
-            productionDatabase = "core".equals(properties.getProperty("database"));
+            PRODUCTION_DATABASE = "core".equals(properties.getProperty("database"));
             MAX_CONNECTIONS = SQLConfig.impl.maxConnections();
             conProvider = () -> {
                 try {
@@ -68,6 +71,8 @@ public class Statement implements AutoCloseable {
                 }
             };
             schemaCreator = table -> {};
+            ON_DUPLICATE_KEY = " ON DUPLICATE KEY UPDATE ";
+            upsertWrapper = f -> f + " = VALUES(" + f + ")";
         } else {
             Connection connection;
 
@@ -78,10 +83,12 @@ public class Statement implements AutoCloseable {
                 throw new SecurityException("Could not create sqlite connection", e);
             }
 
-            productionDatabase = false;
+            PRODUCTION_DATABASE = false;
             MAX_CONNECTIONS = 1;
             conProvider = () -> connection;
             schemaCreator = Table::ensureExistanceInSqlite;
+            ON_DUPLICATE_KEY = " ON CONFLICT DO UPDATE SET ";
+            upsertWrapper = f -> f + " = " + f;
         }
     }
 
@@ -99,11 +106,11 @@ public class Statement implements AutoCloseable {
     }
 
     public static boolean mysqlMode() {
-        return mysqlMode;
+        return MYSQL_MODE;
     }
 
     public static boolean productionDatabase() {
-        return productionDatabase;
+        return PRODUCTION_DATABASE;
     }
 
     private final boolean returnGeneratedKeys;
diff --git a/src/de/steamwar/sql/internal/Table.java b/src/de/steamwar/sql/internal/Table.java
index f9dd6f7..fb72709 100644
--- a/src/de/steamwar/sql/internal/Table.java
+++ b/src/de/steamwar/sql/internal/Table.java
@@ -53,7 +53,7 @@ public class Table<T> {
         keys = Arrays.stream(fields).flatMap(field -> Arrays.stream(field.field.keys())).distinct().collect(Collectors.toMap(Function.identity(), key -> Arrays.stream(fields).filter(field -> Arrays.asList(field.field.keys()).contains(key)).toArray(TableField[]::new)));
 
         for (TableField<?> field : fields) {
-            fieldsByIdentifier.put(field.identifier, field);
+            fieldsByIdentifier.put(field.identifier.toLowerCase(), field);
         }
 
         Statement.schemaCreator.accept(this);
@@ -91,8 +91,8 @@ public class Table<T> {
     }
 
     public Statement insertFields(boolean returnGeneratedKeys, String... fields) {
-        List<String> nonKeyFields = Arrays.stream(fields).filter(f -> fieldsByIdentifier.get(f).field.keys().length == 0).collect(Collectors.toList());
-        return new Statement("INSERT INTO " + name + " (" + String.join(", ", fields) + ") VALUES (" + Arrays.stream(fields).map(f -> "?").collect(Collectors.joining(", ")) + ")" + (nonKeyFields.isEmpty() ? "" : " ON DUPLICATE KEY UPDATE " + nonKeyFields.stream().map(f -> f + " = VALUES(" + f + ")").collect(Collectors.joining(", "))), returnGeneratedKeys);
+        List<String> nonKeyFields = Arrays.stream(fields).filter(f -> fieldsByIdentifier.get(f.toLowerCase()).field.keys().length == 0).collect(Collectors.toList());
+        return new Statement("INSERT INTO " + name + " (" + String.join(", ", fields) + ") VALUES (" + Arrays.stream(fields).map(f -> "?").collect(Collectors.joining(", ")) + ")" + (nonKeyFields.isEmpty() ? "" : Statement.ON_DUPLICATE_KEY + nonKeyFields.stream().map(Statement.upsertWrapper).collect(Collectors.joining(", "))), returnGeneratedKeys);
     }
 
     public Statement delete(String name) {
@@ -104,12 +104,11 @@ public class Table<T> {
     }
 
     void ensureExistanceInSqlite() {
-        List<TableField<?>> primaryKey = keys.containsKey(PRIMARY) ? Arrays.asList(keys.get(PRIMARY)) : Collections.emptyList();
         try (Statement statement = new Statement(
                 "CREATE TABLE IF NOT EXISTS " + name + "(" +
-                        Arrays.stream(fields).map(field -> field.identifier + " " + field.mapper.sqlType() + (field.field.nullable() ? " DEFAULT NULL" : " NOT NULL") + (field.field.nullable() || field.field.def().equals("") ? "" : " DEFAULT " + field.field.def()) + (primaryKey.contains(field) ? " PRIMARY KEY" : "")).collect(Collectors.joining(", ")) +
-                        keys.entrySet().stream().filter(entry -> !entry.getKey().equals(PRIMARY)).map(key -> ", UNIQUE (" + Arrays.stream(key.getValue()).map(field -> field.identifier).collect(Collectors.joining(", ")) + ")").collect(Collectors.joining(" ")) +
-                ") WITHOUT ROWID")) {
+                        Arrays.stream(fields).map(field -> field.identifier + " " + field.mapper.sqlType() + (field.field.nullable() ? " DEFAULT NULL" : " NOT NULL") + (field.field.nullable() || field.field.def().equals("") ? "" : " DEFAULT " + field.field.def())).collect(Collectors.joining(", ")) +
+                        keys.entrySet().stream().map(key -> (key.getKey().equals(PRIMARY) ? ", PRIMARY KEY(" : ", UNIQUE (") + Arrays.stream(key.getValue()).map(field -> field.identifier).collect(Collectors.joining(", ")) + ")").collect(Collectors.joining(" ")) +
+                ")")) {
             statement.update();
         }
     }