Update SQL keywords list to SQL:2016

Per previous convention (see
ace397e), drop SQL:2008 and only keep
the latest two standards and SQL-92.

Note: SQL:2016-2 lists a large number of non-reserved keywords that
are really just information_schema column names related to new
features.  Those kinds of thing have not previously been listed as
keywords, and this was apparently done here by mistake, since these
keywords have been removed again in post-2016 working drafts.  So in
order to avoid bloating the keywords table unnecessarily, I have
omitted these erroneous keywords here.

Author: petere

doc/src/sgml/generate-keywords-table.pl

@@ -6,7 +6,7 @@
 use strict;
 use warnings;
 
-my @sql_versions = reverse sort ('1992', '2008', '2011');
+my @sql_versions = reverse sort ('1992', '2011', '2016');
 
 my $srcdir = $ARGV[0];
 

doc/src/sgml/keywords/sql2008-02-nonreserved.txt renamed to doc/src/sgml/keywords/sql2016-02-nonreserved.txt

@@ -19,6 +19,7 @@ CASCADE
 CATALOG
 CATALOG_NAME
 CHAIN
+CHAINING
 CHARACTER_SET_CATALOG
 CHARACTER_SET_NAME
 CHARACTER_SET_SCHEMA
@@ -30,10 +31,12 @@ COLLATION
 COLLATION_CATALOG
 COLLATION_NAME
 COLLATION_SCHEMA
+COLUMNS
 COLUMN_NAME
 COMMAND_FUNCTION
 COMMAND_FUNCTION_CODE
 COMMITTED
+CONDITIONAL
 CONDITION_NUMBER
 CONNECTION
 CONNECTION_NAME
@@ -42,7 +45,6 @@ CONSTRAINT_NAME
 CONSTRAINT_SCHEMA
 CONSTRAINTS
 CONSTRUCTOR
-CONTAINS
 CONTINUE
 CURSOR_NAME
 DATA
@@ -63,15 +65,21 @@ DISPATCH
 DOMAIN
 DYNAMIC_FUNCTION
 DYNAMIC_FUNCTION_CODE
-EQUALS
+ENCODING
+ENFORCED
+ERROR
 EXCLUDE
 EXCLUDING
+EXPRESSION
 FINAL
+FINISH
 FIRST
 FLAG
 FOLLOWING
+FORMAT
 FORTRAN
 FOUND
+FULFILL
 G
 GENERAL
 GENERATED
@@ -81,6 +89,7 @@ GRANTED
 HIERARCHY
 IGNORE
 IMMEDIATE
+IMMEDIATELY
 IMPLEMENTATION
 INCLUDING
 INCREMENT
@@ -91,8 +100,11 @@ INSTANTIABLE
 INSTEAD
 INVOKER
 ISOLATION
+JSON
 K
+KEEP
 KEY
+KEYS
 KEY_MEMBER
 KEY_TYPE
 LAST
@@ -111,6 +123,7 @@ MORE
 MUMPS
 NAME
 NAMES
+NESTED
 NESTING
 NEXT
 NFC
@@ -129,6 +142,7 @@ ORDERING
 ORDINALITY
 OTHERS
 OUTPUT
+OVERFLOW
 OVERRIDING
 P
 PAD
@@ -140,14 +154,21 @@ PARAMETER_SPECIFIC_NAME
 PARAMETER_SPECIFIC_SCHEMA
 PARTIAL
 PASCAL
+PASS
+PASSING
+PAST
 PATH
 PLACING
+PLAN
 PLI
 PRECEDING
 PRESERVE
 PRIOR
+PRIVATE
 PRIVILEGES
+PRUNE
 PUBLIC
+QUOTES
 READ
 RELATIVE
 REPEATABLE
@@ -158,12 +179,14 @@ RETURNED_CARDINALITY
 RETURNED_LENGTH
 RETURNED_OCTET_LENGTH
 RETURNED_SQLSTATE
+RETURNING
 ROLE
 ROUTINE
 ROUTINE_CATALOG
 ROUTINE_NAME
 ROUTINE_SCHEMA
 ROW_COUNT
+SCALAR
 SCALE
 SCHEMA
 SCHEMA_NAME
@@ -185,12 +208,14 @@ SPACE
 SPECIFIC_NAME
 STATE
 STATEMENT
+STRING
 STRUCTURE
 STYLE
 SUBCLASS_ORIGIN
 T
 TABLE_NAME
 TEMPORARY
+THROUGH
 TIES
 TOP_LEVEL_COUNT
 TRANSACTION
@@ -205,14 +230,19 @@ TRIGGER_SCHEMA
 TYPE
 UNBOUNDED
 UNCOMMITTED
+UNCONDITIONAL
 UNDER
 UNNAMED
 USAGE
 USER_DEFINED_TYPE_CATALOG
 USER_DEFINED_TYPE_CODE
 USER_DEFINED_TYPE_NAME
 USER_DEFINED_TYPE_SCHEMA
+UTF16
+UTF32
+UTF8
 VIEW
 WORK
+WRAPPER
 WRITE
 ZONE