feat: support MySQL CREATE and ALTER VIEW options

src/main/java/net/sf/jsqlparser/statement/MySqlDefiner.java

@@ -0,0 +1,69 @@
+/*-
+ * #%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;
+
+import java.io.Serializable;
+import net.sf.jsqlparser.expression.StringValue;
+
+/** Structured account shared by MySQL stored-object {@code DEFINER} clause. */
+public class MySqlDefiner implements Serializable {
+
+    private StringValue user;
+    private StringValue host;
+    private boolean currentUserParentheses;
+
+    public boolean isCurrentUserParentheses() {
+        return currentUserParentheses;
+    }
+
+    public void setCurrentUserParentheses(boolean currentUserParentheses) {
+        this.currentUserParentheses = currentUserParentheses;
+    }
+
+
+    public StringValue getUser() {
+        return user;
+    }
+
+    public void setUser(StringValue user) {
+        this.user = user;
+        currentUserParentheses = false;
+    }
+
+    public StringValue getHost() {
+        return host;
+    }
+
+    public void setHost(StringValue host) {
+        this.host = host;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder builder = new StringBuilder().append(user);
+        if (currentUserParentheses) {
+            builder.append("()");
+        }
+        if (host != null) {
+            builder.append("@").append(host);
+        }
+        return builder.toString();
+    }
+
+    public MySqlDefiner withUser(StringValue user) {
+        setUser(user);
+        return this;
+    }
+
+    public MySqlDefiner withHost(StringValue host) {
+        setHost(host);
+        return this;
+    }
+}

src/main/java/net/sf/jsqlparser/statement/create/trigger/TriggerDefiner.java

@@ -9,45 +9,18 @@
  */
 package net.sf.jsqlparser.statement.create.trigger;
 
-import java.io.Serializable;
 import net.sf.jsqlparser.expression.StringValue;
+import net.sf.jsqlparser.statement.MySqlDefiner;
 
-/** Structured account used by a MySQL trigger {@code DEFINER} clause. */
-public class TriggerDefiner implements Serializable {
-
-    private StringValue user;
-    private StringValue host;
-
-    public StringValue getUser() {
-        return user;
-    }
-
-    public void setUser(StringValue user) {
-        this.user = user;
-    }
-
-    public StringValue getHost() {
-        return host;
-    }
-
-    public void setHost(StringValue host) {
-        this.host = host;
-    }
-
+/** Retains the trigger API while sharing MySQL DEFINER account handling with views. */
+public class TriggerDefiner extends MySqlDefiner {
     @Override
-    public String toString() {
-        StringBuilder builder = new StringBuilder().append(user);
-        if (host != null) {
-            builder.append("@").append(host);
-        }
-        return builder.toString();
-    }
-
     public TriggerDefiner withUser(StringValue user) {
         setUser(user);
         return this;
     }
 
+    @Override
     public TriggerDefiner withHost(StringValue host) {
         setHost(host);
         return this;

src/main/java/net/sf/jsqlparser/statement/create/view/AlterView.java

@@ -23,6 +23,36 @@
 
 public class AlterView implements Statement {
 
+    private MySqlViewOptions mySqlOptions;
+
+    public MySqlViewOptions getMySqlOptions() {
+        return mySqlOptions;
+    }
+
+    public void setMySqlOptions(MySqlViewOptions mySqlOptions) {
+        this.mySqlOptions = mySqlOptions;
+    }
+
+    public void appendMySqlOptionsTo(StringBuilder builder) {
+        if (mySqlOptions != null) {
+            mySqlOptions.appendTo(builder);
+        }
+    }
+
+    private CreateView.CheckOption checkOption;
+
+    public CreateView.CheckOption getCheckOption() {
+        return checkOption;
+    }
+
+    public void setCheckOption(CreateView.CheckOption checkOption) {
+        this.checkOption = checkOption;
+    }
+
+    public void appendCheckOptionTo(StringBuilder sql) {
+        CreateView.appendCheckOptionTo(sql, checkOption);
+    }
+
     private Table view;
     private Select select;
     private boolean useReplace = false;
@@ -68,12 +98,14 @@ public String toString() {
         } else {
             sql = new StringBuilder("ALTER ");
         }
+        appendMySqlOptionsTo(sql);
         sql.append("VIEW ");
         sql.append(view);
         if (columnNames != null) {
             sql.append(PlainSelect.getStringList(columnNames, true, true));
         }
         sql.append(" AS ").append(select);
+        appendCheckOptionTo(sql);
         return sql.toString();
     }
 

src/main/java/net/sf/jsqlparser/statement/create/view/CreateView.java

@@ -23,6 +23,22 @@
 
 public class CreateView implements Statement {
 
+    private MySqlViewOptions mySqlOptions;
+
+    public MySqlViewOptions getMySqlOptions() {
+        return mySqlOptions;
+    }
+
+    public void setMySqlOptions(MySqlViewOptions mySqlOptions) {
+        this.mySqlOptions = mySqlOptions;
+    }
+
+    public void appendMySqlOptionsTo(StringBuilder builder) {
+        if (mySqlOptions != null) {
+            mySqlOptions.appendTo(builder);
+        }
+    }
+
     private Table view;
     private Select select;
     private boolean orReplace = false;
@@ -271,6 +287,7 @@ public String toString() {
         if (isOrReplace()) {
             sql.append("OR REPLACE ");
         }
+        appendMySqlOptionsTo(sql);
         appendForceOptionIfApplicable(sql);
         if (secure) {
             sql.append("SECURE ");
@@ -328,14 +345,18 @@ public void appendParametersTo(StringBuilder sql) {
         }
     }
 
-    public void appendOptionsAfterQueryTo(StringBuilder sql) {
+    public static void appendCheckOptionTo(StringBuilder sql, CheckOption checkOption) {
         if (checkOption != null) {
             sql.append(" WITH ");
             if (checkOption != CheckOption.DEFAULT) {
                 sql.append(checkOption).append(' ');
             }
             sql.append("CHECK OPTION");
         }
+    }
+
+    public void appendOptionsAfterQueryTo(StringBuilder sql) {
+        appendCheckOptionTo(sql, checkOption);
         if (withData != null) {
             sql.append(withData ? " WITH DATA" : " WITH NO DATA");
         }

src/main/java/net/sf/jsqlparser/statement/create/view/MySqlViewOptions.java

@@ -0,0 +1,71 @@
+/*-
+ * #%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.create.view;
+
+import java.io.Serializable;
+import net.sf.jsqlparser.statement.MySqlDefiner;
+
+/** Prefix options shared by MySQL CREATE VIEW and ALTER VIEW. */
+public class MySqlViewOptions implements Serializable {
+    public enum Algorithm {
+        UNDEFINED, MERGE, TEMPTABLE
+    }
+
+    public enum Security {
+        DEFINER, INVOKER
+    }
+
+    private Algorithm algorithm;
+    private MySqlDefiner definer;
+    private Security security;
+
+    public Algorithm getAlgorithm() {
+        return algorithm;
+    }
+
+    public void setAlgorithm(Algorithm algorithm) {
+        this.algorithm = algorithm;
+    }
+
+    public MySqlDefiner getDefiner() {
+        return definer;
+    }
+
+    public void setDefiner(MySqlDefiner definer) {
+        this.definer = definer;
+    }
+
+    public Security getSecurity() {
+        return security;
+    }
+
+    public void setSecurity(Security security) {
+        this.security = security;
+    }
+
+    public void appendTo(StringBuilder builder) {
+        if (algorithm != null) {
+            builder.append("ALGORITHM = ").append(algorithm).append(' ');
+        }
+        if (definer != null) {
+            builder.append("DEFINER = ").append(definer).append(' ');
+        }
+        if (security != null) {
+            builder.append("SQL SECURITY ").append(security).append(' ');
+        }
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sql = new StringBuilder();
+        appendTo(sql);
+        return sql.toString().trim();
+    }
+}

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

@@ -1947,7 +1947,10 @@ public void visit(TableFunction tableFunction) {
 
     @Override
     public <S> Void visit(AlterView alterView, S context) {
-        throwUnsupported(alterView);
+        visit(alterView.getView(), context);
+        if (alterView.getSelect() != null) {
+            alterView.getSelect().accept((SelectVisitor<?>) this, context);
+        }
         return null;
     }
 

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

@@ -37,13 +37,15 @@ public void deParse(AlterView alterView) {
         } else {
             builder.append("ALTER ");
         }
+        alterView.appendMySqlOptionsTo(builder);
         builder.append("VIEW ").append(alterView.getView().getFullyQualifiedName());
         if (alterView.getColumnNames() != null) {
             builder.append(PlainSelect.getStringList(alterView.getColumnNames(), true, true));
         }
         builder.append(" AS ");
 
         alterView.getSelect().accept(selectVisitor, null);
+        alterView.appendCheckOptionTo(builder);
     }
 
 }

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

@@ -41,6 +41,7 @@ public void deParse(CreateView createView) {
         if (createView.isOrReplace()) {
             builder.append("OR REPLACE ");
         }
+        createView.appendMySqlOptionsTo(builder);
         switch (createView.getForce()) {
             case FORCE:
                 builder.append("FORCE ");