fix help

doc/src/sgml/ref/create_table_as.sgmlin

@@ -11,7 +11,7 @@
 <refsynopsisdiv>
 <synopsis>
 CREATE [ UNLOGGED ] TABLE table_name
-    [ (column_name [, ...] ) ]
+    [ (column_name [ data_type ]  [, ...] ) ]
     [ WITH ( {storage_parameter = value} [, ... ] ) ]
     [ COMPRESS | NOCOMPRESS ]
     [ TABLESPACE tablespace_name ]
@@ -19,6 +19,7 @@ CREATE [ UNLOGGED ] TABLE table_name
     [ TO { GROUP groupname | NODE ( nodename [, ... ] ) } ]
     AS query
     [ WITH [ NO ] DATA ];
+NOTICE: [data_type] is only available in CENTRALIZED mode and B-format database.
 </synopsis>
 </refsynopsisdiv>
 </refentry>

doc/src/sgml/ref/select.sgmlin

@@ -15,6 +15,7 @@ SELECT [/*+ plan_hint */] [ ALL | DISTINCT [ ON ( expression [, ...] ) ] ]
     { * | {expression [ [ AS ] output_name ]} [, ...] }
     [into_option]
     [ FROM from_item [, ...] ]
+    [ index_hints ]
     [ WHERE condition ]
     [ [ START WITH condition ] CONNECT BY condition [ ORDER SIBLINGS BY expression ] ]
     [ GROUP BY grouping_element [, ...] ]
@@ -69,7 +70,11 @@ PARTITION { ( partition_name ) | FOR (  partition_value [, ...] ) }
 SUBPARTITION { ( subpartition_name ) | FOR (  subpartition_value [, ...] )}
 where nlssort_expression_clause can be:
 NLSSORT ( column_name, ' NLS_SORT = { SCHINESE_PINYIN_M | generic_m_ci } ' )
+where index_hints can be:
+FORCE { INDEX | KEY } ( index_name [, ...] )
+| USE { INDEX | KEY } ( [ index_name [, ...] ] )
 NOTICE: [into_option] is only available in CENTRALIZED mode and B-format database.
+NOTICE: [index_hints] is only available in CENTRALIZED mode and B-format database.
 NOTICE: '[ [ START WITH condition ] CONNECT BY condition [ ORDER SIBLINGS BY expression ] ]' is only avaliable in CENTRALIZED mode!
 NOTICE: 'SUBPARTITION { ( subpartition_name ) | FOR (  subpartition_value [, ...] )}' is only avaliable in CENTRALIZED mode!
 </synopsis>