feat: structure MySQL ALTER TABLE ordering and share table options

src/main/java/net/sf/jsqlparser/statement/alter/AlterExpressionOrderBy.java

@@ -0,0 +1,56 @@
+/*-
+ * #%L
+ * JSQLParser library
+ * %%
+ * Copyright (C) 2004 - 2026 JSQLParser
+ * %%
+ * Dual licensed under GNU LGPL 2.1 or Apache License 2.0
+ * #L%
+ */
+package net.sf.jsqlparser.statement.alter;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Consumer;
+import net.sf.jsqlparser.expression.Expression;
+import net.sf.jsqlparser.statement.select.OrderByElement;
+
+/** MySQL ALTER TABLE ORDER BY, using the same mutable order elements as query ordering. */
+public class AlterExpressionOrderBy extends AlterExpression {
+    private final List<OrderByElement> orderByElements = new ArrayList<>();
+
+    public AlterExpressionOrderBy() {
+        setOperation(AlterOperation.ORDER_BY);
+    }
+
+    public List<OrderByElement> getOrderByElements() {
+        return orderByElements;
+    }
+
+    @Override
+    protected void appendBody(StringBuilder builder) {
+        appendOrderBy(builder, builder::append);
+    }
+
+    public StringBuilder appendTo(StringBuilder builder, Consumer<Expression> expressionPrinter) {
+        appendOrderBy(builder, expressionPrinter);
+        appendCommonTail(builder);
+        return builder;
+    }
+
+    private void appendOrderBy(StringBuilder builder, Consumer<Expression> expressionPrinter) {
+        builder.append("ORDER BY ");
+        for (int i = 0; i < orderByElements.size(); i++) {
+            if (i > 0) {
+                builder.append(", ");
+            }
+            OrderByElement element = orderByElements.get(i);
+            expressionPrinter.accept(element.getExpression());
+            if (!element.isAsc()) {
+                builder.append(" DESC");
+            } else if (element.isAscDescPresent()) {
+                builder.append(" ASC");
+            }
+        }
+    }
+}

src/main/java/net/sf/jsqlparser/statement/alter/AlterOperation.java

@@ -12,7 +12,7 @@
 import java.util.Locale;
 
 public enum AlterOperation {
-    ADD, ALTER, DROP, DROP_PRIMARY_KEY, DROP_UNIQUE, DROP_FOREIGN_KEY, DROP_CHECK, MODIFY, CHANGE, CONVERT, COLLATE, ALGORITHM, RENAME, RENAME_TABLE, RENAME_INDEX, RENAME_KEY, RENAME_CONSTRAINT, COMMENT, COMMENT_WITH_EQUAL_SIGN, UNSPECIFIC, ADD_PARTITION, DROP_PARTITION, ATTACH_PARTITION, DETACH_PARTITION, DISCARD_PARTITION, IMPORT_PARTITION, TRUNCATE_PARTITION, COALESCE_PARTITION, REORGANIZE_PARTITION, EXCHANGE_PARTITION, ANALYZE_PARTITION, CHECK_PARTITION, OPTIMIZE_PARTITION, REBUILD_PARTITION, REPAIR_PARTITION, REMOVE_PARTITIONING, PARTITION_BY, SET_TABLE_OPTION, ENGINE, FORCE, KEY_BLOCK_SIZE, LOCK, DISCARD_TABLESPACE, IMPORT_TABLESPACE, DISABLE_KEYS, ENABLE_KEYS, ENABLE_ROW_LEVEL_SECURITY, DISABLE_ROW_LEVEL_SECURITY, FORCE_ROW_LEVEL_SECURITY, NO_FORCE_ROW_LEVEL_SECURITY, ALTER_PRIMARY_KEY, ALTER_RELATION;
+    ADD, ALTER, DROP, DROP_PRIMARY_KEY, DROP_UNIQUE, DROP_FOREIGN_KEY, DROP_CHECK, MODIFY, CHANGE, CONVERT, COLLATE, ALGORITHM, RENAME, RENAME_TABLE, RENAME_INDEX, RENAME_KEY, RENAME_CONSTRAINT, COMMENT, COMMENT_WITH_EQUAL_SIGN, UNSPECIFIC, ADD_PARTITION, DROP_PARTITION, ATTACH_PARTITION, DETACH_PARTITION, DISCARD_PARTITION, IMPORT_PARTITION, TRUNCATE_PARTITION, COALESCE_PARTITION, REORGANIZE_PARTITION, EXCHANGE_PARTITION, ANALYZE_PARTITION, CHECK_PARTITION, OPTIMIZE_PARTITION, REBUILD_PARTITION, REPAIR_PARTITION, REMOVE_PARTITIONING, PARTITION_BY, SET_TABLE_OPTION, ENGINE, FORCE, KEY_BLOCK_SIZE, LOCK, DISCARD_TABLESPACE, IMPORT_TABLESPACE, DISABLE_KEYS, ENABLE_KEYS, ENABLE_ROW_LEVEL_SECURITY, DISABLE_ROW_LEVEL_SECURITY, FORCE_ROW_LEVEL_SECURITY, NO_FORCE_ROW_LEVEL_SECURITY, ALTER_PRIMARY_KEY, ALTER_RELATION, ORDER_BY;
 
     public static AlterOperation from(String operation) {
         return Enum.valueOf(AlterOperation.class, operation.toUpperCase(Locale.ROOT));

src/main/java/net/sf/jsqlparser/statement/create/table/TableOption.java

@@ -21,7 +21,7 @@
 public class TableOption implements Serializable {
 
     public enum Kind {
-        ENGINE, CHARACTER_SET, COLLATE, COMMENT, AUTO_INCREMENT, STATS_AUTO_RECALC, STATS_PERSISTENT, STATS_SAMPLE_PAGES, UNION, ENCRYPTION, PASSWORD, DATA_DIRECTORY, INDEX_DIRECTORY, STORAGE_PARAMETERS, WITHOUT_OIDS, ENGINE_ATTRIBUTE, SECONDARY_ENGINE_ATTRIBUTE, OTHER
+        ENGINE, CHARACTER_SET, COLLATE, COMMENT, AUTO_INCREMENT, STATS_AUTO_RECALC, STATS_PERSISTENT, STATS_SAMPLE_PAGES, UNION, ENCRYPTION, PASSWORD, DATA_DIRECTORY, INDEX_DIRECTORY, STORAGE_PARAMETERS, WITHOUT_OIDS, ENGINE_ATTRIBUTE, SECONDARY_ENGINE_ATTRIBUTE, ROW_FORMAT, OTHER
     }
 
     private Kind kind = Kind.OTHER;

src/main/java/net/sf/jsqlparser/util/TableDefinitionTraversal.java

@@ -49,6 +49,10 @@ public static void visit(CreateIndex createIndex, Consumer<Expression> expressio
     /** Visits the structured definitions and expressions belonging to a single ALTER action. */
     public static void visit(AlterExpression action, Consumer<Expression> expressions,
             Consumer<Table> tables) {
+        if (action instanceof net.sf.jsqlparser.statement.alter.AlterExpressionOrderBy) {
+            ((net.sf.jsqlparser.statement.alter.AlterExpressionOrderBy) action).getOrderByElements()
+                    .forEach(element -> accept(element.getExpression(), expressions));
+        }
         if (action instanceof net.sf.jsqlparser.statement.alter.RelationAlterAction) {
             net.sf.jsqlparser.statement.alter.RelationAlterAction relation =
                     (net.sf.jsqlparser.statement.alter.RelationAlterAction) action;

src/main/java/net/sf/jsqlparser/util/deparser/AlterDeParser.java

@@ -51,6 +51,11 @@ public void deParse(Alter alter) {
     }
 
     private void deParseAction(AlterExpression action) {
+        if (action instanceof net.sf.jsqlparser.statement.alter.AlterExpressionOrderBy) {
+            ((net.sf.jsqlparser.statement.alter.AlterExpressionOrderBy) action).appendTo(builder,
+                    expression -> expression.accept(expressionVisitor, null));
+            return;
+        }
         if (action instanceof RelationAlterAction) {
             ((RelationAlterAction) action).appendTo(builder,
                     expression -> expression.accept(expressionVisitor, null));

src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt

@@ -1570,7 +1570,7 @@ public class CCJSqlParser extends AbstractJSqlParser<CCJSqlParser> {
         int kind = getToken(1).kind;
         if (kind == K_ENGINE || kind == K_COLLATE || kind == K_COMMENT
                 || isMySqlScalarTableOptionAhead() || kind == K_UNION
-                || isMySqlStatisticsOptionAhead()) {
+                || isMySqlStatisticsOptionAhead() || isKeywordAhead("ROW_FORMAT")) {
             return true;
         }
         if (kind == K_CHARACTER && getToken(2).kind == K_SET
@@ -15480,6 +15480,13 @@ TableOption MySqlTableOption(): {
                     "Expected DEFAULT, 0, or 1 for " + name);
         }
         |
+        LOOKAHEAD({ isKeywordAhead("ROW_FORMAT") }) ContextualKeyword("ROW_FORMAT")
+        { name = "ROW_FORMAT"; kind = TableOption.Kind.ROW_FORMAT; }
+        [ "=" { useEquals = true; } ] value=RelObjectName() {
+            requireDdlSyntax(Arrays.asList("DEFAULT", "DYNAMIC", "FIXED", "COMPRESSED", "REDUNDANT", "COMPACT")
+                    .contains(value.toUpperCase(Locale.ROOT)), "Invalid MySQL ROW_FORMAT");
+        }
+        |
         LOOKAHEAD({ isMySqlScalarTableOptionAhead() }) option=MySqlScalarTableOption()
         { return option; }
         |
@@ -15554,6 +15561,30 @@ TableOption MySqlScalarTableOption():
     { return new TableOption(kind, name, value, useEquals); }
 }
 
+/** Statistics and row format share CREATE's validation and option nodes. */
+AlterExpressionTableOption AlterSharedTableOption():
+{ TableOption option; AlterExpressionTableOption action = new AlterExpressionTableOption(); }
+{
+    option=MySqlTableOption()
+    { action.setStructuredTableOption(option); return action; }
+}
+
+AlterExpressionOrderBy MySqlAlterOrderBy():
+{ AlterExpressionOrderBy action = new AlterExpressionOrderBy(); OrderByElement element; }
+{
+    <K_ORDER> <K_BY> element=MySqlAlterOrderColumn() { action.getOrderByElements().add(element); }
+    ( LOOKAHEAD(1) "," element=MySqlAlterOrderColumn() { action.getOrderByElements().add(element); } )*
+    { return action; }
+}
+
+OrderByElement MySqlAlterOrderColumn():
+{ OrderByElement element = new OrderByElement(); String name; Token order; }
+{
+    name=RelObjectName() { element.setExpression(createColumn(name)); }
+    [ LOOKAHEAD(2) ( order=<K_ASC> | order=<K_DESC> ) { element.setAsc(order.kind == K_ASC); element.setAscDescPresent(true); } ]
+    { return element; }
+}
+
 AlterExpressionTableOption AlterScalarTableOption():
 {
     TableOption option;
@@ -18068,6 +18099,11 @@ AlterExpression AlterExpression():
 {
 
     (
+        LOOKAHEAD(<K_ORDER> <K_BY>) alterExp=MySqlAlterOrderBy()
+      |
+        LOOKAHEAD({ isMySqlStatisticsOptionAhead() || isKeywordAhead("ROW_FORMAT") })
+        alterExp=AlterSharedTableOption()
+      |
         LOOKAHEAD({ isPostgreSqlRelationActionAhead() }) alterExp=PostgreSqlRelationAction() {
             requireDdlSyntax(((RelationAlterAction) alterExp).getColumnNumber() == null,
                     "ALTER TABLE expects a column name, not an ordinal");

src/test/java/net/sf/jsqlparser/statement/alter/MySqlAlterOrderingOptionsTest.java

@@ -0,0 +1,98 @@
+/*-
+ * #%L
+ * JSQLParser library
+ * %%
+ * Copyright (C) 2004 - 2026 JSQLParser
+ * %%
+ * Dual licensed under GNU LGPL 2.1 or Apache License 2.0
+ * #L%
+ */
+package net.sf.jsqlparser.statement.alter;
+
+import static org.junit.jupiter.api.Assertions.*;
+import java.util.ArrayList;
+import java.util.List;
+import net.sf.jsqlparser.JSQLParserException;
+import net.sf.jsqlparser.expression.Expression;
+import net.sf.jsqlparser.parser.AbstractJSqlParser.Dialect;
+import net.sf.jsqlparser.parser.CCJSqlParserUtil;
+import net.sf.jsqlparser.schema.Column;
+import net.sf.jsqlparser.statement.create.table.CreateTable;
+import net.sf.jsqlparser.statement.create.table.TableOption;
+import net.sf.jsqlparser.util.TableDefinitionTraversal;
+import net.sf.jsqlparser.util.deparser.StatementDeParser;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
+
+class MySqlAlterOrderingOptionsTest {
+    @ParameterizedTest
+    @ValueSource(strings = {"ORDER BY id DESC, label ASC", "ORDER BY id, label",
+            "ENGINE = InnoDB, ROW_FORMAT = DYNAMIC, STATS_PERSISTENT = DEFAULT",
+            "STATS_AUTO_RECALC = 1, STATS_SAMPLE_PAGES = 16",
+            "ENGINE = InnoDB, ORDER BY id DESC, label ASC", "ROW_FORMAT COMPACT, ORDER BY id DESC"})
+    void actionAndOrderListBoundariesRemainSeparate(String actions) throws JSQLParserException {
+        Alter alter = parse("ALTER TABLE t " + actions);
+        assertEquals("ALTER TABLE t " + actions, alter.toString());
+        alter.getAlterExpressions().forEach(
+                action -> assertNotEquals(AlterOperation.UNSPECIFIC, action.getOperation()));
+        assertRoundTrip(alter);
+        assertEquals(2, CCJSqlParserUtil
+                .parseStatements(alter + "; SELECT 1", p -> p.withDialect(Dialect.MYSQL)).size());
+    }
+
+    @Test
+    void orderElementsAreMutableAndVisited() throws JSQLParserException {
+        Alter alter = parse("ALTER TABLE t ORDER BY id DESC, label ASC");
+        AlterExpressionOrderBy order = (AlterExpressionOrderBy) alter.getAlterExpressions().get(0);
+        assertEquals(2, order.getOrderByElements().size());
+        order.getOrderByElements().get(0).setExpression(new Column("new_id"));
+        order.getOrderByElements().get(0).setAsc(true);
+        List<Expression> visited = new ArrayList<>();
+        TableDefinitionTraversal.visit(order, visited::add, ignored -> {
+        });
+        assertEquals(2, visited.size());
+        assertEquals("ALTER TABLE t ORDER BY new_id ASC, label ASC", alter.toString());
+        assertRoundTrip(alter);
+    }
+
+    @Test
+    void rowFormatAndStatisticsShareCreateOptions() throws JSQLParserException {
+        Alter alter = parse("ALTER TABLE t ROW_FORMAT = DYNAMIC, STATS_PERSISTENT = DEFAULT");
+        TableOption rowFormat = ((AlterExpressionTableOption) alter.getAlterExpressions().get(0))
+                .getStructuredTableOption();
+        TableOption statistics = ((AlterExpressionTableOption) alter.getAlterExpressions().get(1))
+                .getStructuredTableOption();
+        assertEquals(TableOption.Kind.ROW_FORMAT, rowFormat.getKind());
+        assertEquals(TableOption.Kind.STATS_PERSISTENT, statistics.getKind());
+        rowFormat.setValue("COMPACT");
+        statistics.setValue("1");
+        assertEquals("ALTER TABLE t ROW_FORMAT = COMPACT, STATS_PERSISTENT = 1", alter.toString());
+        CreateTable create =
+                (CreateTable) CCJSqlParserUtil.parse("CREATE TABLE t (id INT) ROW_FORMAT = COMPACT",
+                        p -> p.withDialect(Dialect.MYSQL));
+        assertEquals(rowFormat.toString(),
+                create.getTableOption(TableOption.Kind.ROW_FORMAT).orElseThrow().toString());
+        assertRoundTrip(alter);
+    }
+
+    @Test
+    void invalidOptionsAndOrderExpressionsFail() {
+        for (String actions : new String[] {"ROW_FORMAT = invalid", "STATS_PERSISTENT = 2",
+                "ORDER BY id + 1", "ORDER BY id, ENGINE = InnoDB",
+                "ORDER BY id, ADD COLUMN x INT"}) {
+            assertThrows(JSQLParserException.class, () -> parse("ALTER TABLE t " + actions));
+        }
+    }
+
+    private static Alter parse(String sql) throws JSQLParserException {
+        return (Alter) CCJSqlParserUtil.parse(sql, p -> p.withDialect(Dialect.MYSQL));
+    }
+
+    private static void assertRoundTrip(Alter alter) throws JSQLParserException {
+        StringBuilder sql = new StringBuilder();
+        alter.accept(new StatementDeParser(sql), null);
+        assertEquals(alter.toString(), sql.toString());
+        assertEquals(alter.toString(), parse(sql.toString()).toString());
+    }
+}