Fix startup issue when using "CHECK" as a column name.

h2/src/docsrc/html/changelog.html

@@ -21,7 +21,7 @@ Change Log
 
 <h2>Next Version (unreleased)</h2>
 <ul>
-<li>-
+<li>Fix startup issue when using "CHECK" as a column name.
 </li>
 </ul>
 

h2/src/main/org/h2/command/Parser.java

@@ -3879,7 +3879,9 @@ public class Parser {
     private static int getSaveTokenType(String s, boolean supportOffsetFetch) {
         switch (s.charAt(0)) {
         case 'C':
-            if (s.equals("CURRENT_TIMESTAMP")) {
+            if (s.equals("CHECK")) {
+                return KEYWORD;
+            } else if (s.equals("CURRENT_TIMESTAMP")) {
                 return CURRENT_TIMESTAMP;
             } else if (s.equals("CURRENT_TIME")) {
                 return CURRENT_TIME;