fix: classify STATEMENT as a non-reserved identifier keyword (#2706)

Signed-off-by: minleejae <mmj9808@gmail.com>

Author: minleejae

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

@@ -2561,6 +2561,7 @@ String NonReservedWord() :
       | tk=<K_STARTING:"STARTING">
       | tk=<K_STEP: "STEP">
       | tk=<K_STORED: "STORED">
+      | tk=<K_STATEMENT:"STATEMENT">
       | tk=<K_STORAGE: "STORAGE">
       | tk=<K_STREAM: "STREAM">
       | tk=<K_STRICT: "STRICT">
@@ -2692,7 +2693,6 @@ TOKEN: /* Reserved SQL Keywords and structural tokens */
 |   <K_IN:"IN">
 |   <K_INCLUDES:"INCLUDES"> /* Salesforce SOQL */
 |   <K_INNER:"INNER">
-|   <K_STATEMENT:"STATEMENT">
 |   <K_STRAIGHT:"STRAIGHT_JOIN">
 |   <K_INTERSECT:"INTERSECT">
 |   <K_INTERVAL:"INTERVAL">

src/test/java/net/sf/jsqlparser/statement/create/StatementIdentifierTest.java

@@ -0,0 +1,49 @@
+/*-
+ * #%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;
+
+import static org.junit.jupiter.api.Assertions.*;
+import net.sf.jsqlparser.JSQLParserException;
+import net.sf.jsqlparser.parser.AbstractJSqlParser.Dialect;
+import net.sf.jsqlparser.parser.CCJSqlParserUtil;
+import net.sf.jsqlparser.statement.Statement;
+import net.sf.jsqlparser.statement.create.table.CreateTable;
+import net.sf.jsqlparser.statement.create.trigger.CreateTrigger;
+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.EnumSource;
+
+class StatementIdentifierTest {
+    @ParameterizedTest
+    @EnumSource(value = Dialect.class, names = {"POSTGRESQL", "MYSQL"})
+    void statementIsAnUnquotedIdentifier(Dialect dialect) throws JSQLParserException {
+        CreateTable table = (CreateTable) CCJSqlParserUtil.parse(
+                "CREATE TABLE statement (statement INT)", p -> p.withDialect(dialect));
+        assertEquals("statement", table.getTable().getName());
+        assertEquals("statement", table.getColumnDefinitions().get(0).getColumnName());
+        for (String sql : new String[] {"SELECT statement FROM statement",
+                "ALTER TABLE statement ADD COLUMN statement INT"}) {
+            Statement statement = CCJSqlParserUtil.parse(sql, p -> p.withDialect(dialect));
+            StringBuilder buffer = new StringBuilder();
+            statement.accept(new StatementDeParser(buffer), null);
+            assertEquals(sql, buffer.toString());
+        }
+    }
+
+    @Test
+    void triggerOrientationRemainsAKeyword() throws JSQLParserException {
+        CreateTrigger trigger = (CreateTrigger) CCJSqlParserUtil.parse(
+                "CREATE TRIGGER tr AFTER INSERT ON t FOR EACH STATEMENT EXECUTE FUNCTION f()",
+                p -> p.withDialect(Dialect.POSTGRESQL));
+        assertEquals(CreateTrigger.Orientation.STATEMENT, trigger.getOrientation());
+        assertTrue(trigger.toString().contains("FOR EACH STATEMENT"));
+    }
+}