feat: SessionStatement with options

- allow `KEEP`

Signed-off-by: Andreas Reichel <andreas@manticore-projects.com>

Author: manticore-projects

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

@@ -2143,14 +2143,14 @@ SessionStatement SessionStatement():
     // options
     [
         LOOKAHEAD(2) <K_WITH>
-        idToken = <S_IDENTIFIER>
+        ( idToken = <S_IDENTIFIER> | idToken = <K_KEEP> )
         "="
         ( actionToken = <S_IDENTIFIER> | actionToken = <S_QUOTED_IDENTIFIER> | actionToken = <S_CHAR_LITERAL> | actionToken = <S_LONG> | actionToken = <K_TRUE> | actionToken = <K_FALSE> | actionToken = <K_ON> | actionToken = <K_OFF>  | actionToken = <K_YES> | actionToken = <K_NO> )
         { sessionsStatement.putOption(idToken.image, actionToken.image ); }
 
         (
             ","
-            idToken = <S_IDENTIFIER>
+            ( idToken = <S_IDENTIFIER> | idToken = <K_KEEP> )
             "="
             ( actionToken = <S_IDENTIFIER> | actionToken = <S_QUOTED_IDENTIFIER> | actionToken = <S_CHAR_LITERAL> | actionToken = <S_LONG> | actionToken = <K_TRUE> | actionToken = <K_FALSE> | actionToken = <K_ON> | actionToken = <K_OFF>  | actionToken = <K_YES> | actionToken = <K_NO> )
             { sessionsStatement.putOption(idToken.image, actionToken.image ); }

src/test/java/net/sf/jsqlparser/statement/SessionStatementTest.java

@@ -22,7 +22,8 @@ class SessionStatementTest {
             "SESSION START 1234", "SESSION START", "SESSION APPLY 'test'", "SESSION APPLY",
             "SESSION DROP \"test\"", "SESSION DROP", "SESSION SHOW test", "SESSION SHOW",
             "SESSION DESCRIBE 1234", "SESSION DESCRIBE", "SESSION START unnamed.session1",
-            "SESSION START unnamed.session1 WITH persist=false,cleanup=on"
+            "SESSION START unnamed.session1 WITH persist=false,cleanup=on",
+            "SESSION APPLY unnamed.session1 WITH persist=false,keep=true"
     })
     void testStartSession(String sqlStr) throws JSQLParserException {
         SessionStatement sessionStatement =