MDEV-25129 Add KEYWORDS view to the INFORMATION_SCHEMA

Add KEYWORDS table and SQL_FUNCTIONS table to INFORMATION_SCHEMA.
This commits needs some minor changes when propagated upwards
(e.g. func_array in item_create.cc has a termination element that
 doesn't exist in later versions of MariaDB)

.gitignore

@@ -517,3 +517,5 @@ compile_commands.json
 
 # Visual Studio Code workspace
 .vscode/
+
+.cache/clangd

mysql-test/r/information_schema.result

@@ -65,6 +65,7 @@ GEOMETRY_COLUMNS
 GLOBAL_STATUS
 GLOBAL_VARIABLES
 INDEX_STATISTICS
+KEYWORDS
 KEY_CACHES
 KEY_COLUMN_USAGE
 PARAMETERS
@@ -79,6 +80,7 @@ SCHEMA_PRIVILEGES
 SESSION_STATUS
 SESSION_VARIABLES
 SPATIAL_REF_SYS
+SQL_FUNCTIONS
 STATISTICS
 SYSTEM_VARIABLES
 TABLES

mysql-test/r/information_schema_all_engines.result

@@ -41,6 +41,7 @@ INNODB_SYS_VIRTUAL
 INNODB_TABLESPACES_ENCRYPTION
 INNODB_TABLESPACES_SCRUBBING
 INNODB_TRX
+KEYWORDS
 KEY_CACHES
 KEY_COLUMN_USAGE
 PARAMETERS
@@ -55,6 +56,7 @@ SCHEMA_PRIVILEGES
 SESSION_STATUS
 SESSION_VARIABLES
 SPATIAL_REF_SYS
+SQL_FUNCTIONS
 STATISTICS
 SYSTEM_VARIABLES
 TABLES
@@ -121,6 +123,7 @@ INNODB_SYS_VIRTUAL	TABLE_ID
 INNODB_TABLESPACES_ENCRYPTION	SPACE
 INNODB_TABLESPACES_SCRUBBING	SPACE
 INNODB_TRX	trx_id
+KEYWORDS	WORD
 KEY_CACHES	KEY_CACHE_NAME
 KEY_COLUMN_USAGE	CONSTRAINT_SCHEMA
 PARAMETERS	SPECIFIC_SCHEMA
@@ -135,6 +138,7 @@ SCHEMA_PRIVILEGES	TABLE_SCHEMA
 SESSION_STATUS	VARIABLE_NAME
 SESSION_VARIABLES	VARIABLE_NAME
 SPATIAL_REF_SYS	SRID
+SQL_FUNCTIONS	FUNCTION
 STATISTICS	TABLE_SCHEMA
 SYSTEM_VARIABLES	VARIABLE_NAME
 TABLES	TABLE_SCHEMA
@@ -201,6 +205,7 @@ INNODB_SYS_VIRTUAL	TABLE_ID
 INNODB_TABLESPACES_ENCRYPTION	SPACE
 INNODB_TABLESPACES_SCRUBBING	SPACE
 INNODB_TRX	trx_id
+KEYWORDS	WORD
 KEY_CACHES	KEY_CACHE_NAME
 KEY_COLUMN_USAGE	CONSTRAINT_SCHEMA
 PARAMETERS	SPECIFIC_SCHEMA
@@ -215,6 +220,7 @@ SCHEMA_PRIVILEGES	TABLE_SCHEMA
 SESSION_STATUS	VARIABLE_NAME
 SESSION_VARIABLES	VARIABLE_NAME
 SPATIAL_REF_SYS	SRID
+SQL_FUNCTIONS	FUNCTION
 STATISTICS	TABLE_SCHEMA
 SYSTEM_VARIABLES	VARIABLE_NAME
 TABLES	TABLE_SCHEMA
@@ -356,6 +362,7 @@ Database: information_schema
 | INNODB_TABLESPACES_ENCRYPTION         |
 | INNODB_TABLESPACES_SCRUBBING          |
 | INNODB_TRX                            |
+| KEYWORDS                              |
 | KEY_CACHES                            |
 | KEY_COLUMN_USAGE                      |
 | PARAMETERS                            |
@@ -370,6 +377,7 @@ Database: information_schema
 | SESSION_STATUS                        |
 | SESSION_VARIABLES                     |
 | SPATIAL_REF_SYS                       |
+| SQL_FUNCTIONS                         |
 | STATISTICS                            |
 | SYSTEM_VARIABLES                      |
 | TABLES                                |
@@ -426,6 +434,7 @@ Database: INFORMATION_SCHEMA
 | INNODB_TABLESPACES_ENCRYPTION         |
 | INNODB_TABLESPACES_SCRUBBING          |
 | INNODB_TRX                            |
+| KEYWORDS                              |
 | KEY_CACHES                            |
 | KEY_COLUMN_USAGE                      |
 | PARAMETERS                            |
@@ -440,6 +449,7 @@ Database: INFORMATION_SCHEMA
 | SESSION_STATUS                        |
 | SESSION_VARIABLES                     |
 | SPATIAL_REF_SYS                       |
+| SQL_FUNCTIONS                         |
 | STATISTICS                            |
 | SYSTEM_VARIABLES                      |
 | TABLES                                |
@@ -459,5 +469,5 @@ Wildcard: inf_rmation_schema
 | information_schema |
 SELECT table_schema, count(*) FROM information_schema.TABLES WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test', 'mysqltest') GROUP BY TABLE_SCHEMA;
 table_schema	count(*)
-information_schema	65
+information_schema	67
 mysql	30

mysql-test/suite/funcs_1/r/is_columns_is.result

@@ -181,6 +181,7 @@ def	information_schema	INDEX_STATISTICS	INDEX_NAME	3	''	NO	varchar	192	576	NULL
 def	information_schema	INDEX_STATISTICS	ROWS_READ	4	0	NO	bigint	NULL	NULL	19	0	NULL	NULL	NULL	bigint(21)			select		NEVER	NULL
 def	information_schema	INDEX_STATISTICS	TABLE_NAME	2	''	NO	varchar	192	576	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(192)			select		NEVER	NULL
 def	information_schema	INDEX_STATISTICS	TABLE_SCHEMA	1	''	NO	varchar	192	576	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(192)			select		NEVER	NULL
+def	information_schema	KEYWORDS	WORD	1	NULL	YES	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)			select		NEVER	NULL
 def	information_schema	KEY_CACHES	BLOCK_SIZE	5	0	NO	bigint	NULL	NULL	20	0	NULL	NULL	NULL	bigint(21) unsigned			select		NEVER	NULL
 def	information_schema	KEY_CACHES	DIRTY_BLOCKS	8	0	NO	bigint	NULL	NULL	20	0	NULL	NULL	NULL	bigint(21) unsigned			select		NEVER	NULL
 def	information_schema	KEY_CACHES	FULL_SIZE	4	0	NO	bigint	NULL	NULL	20	0	NULL	NULL	NULL	bigint(21) unsigned			select		NEVER	NULL
@@ -336,6 +337,7 @@ def	information_schema	SPATIAL_REF_SYS	AUTH_NAME	2	''	NO	varchar	512	1536	NULL	N
 def	information_schema	SPATIAL_REF_SYS	AUTH_SRID	3	0	NO	int	NULL	NULL	10	0	NULL	NULL	NULL	int(5)			select		NEVER	NULL
 def	information_schema	SPATIAL_REF_SYS	SRID	1	0	NO	smallint	NULL	NULL	5	0	NULL	NULL	NULL	smallint(5)			select		NEVER	NULL
 def	information_schema	SPATIAL_REF_SYS	SRTEXT	4	''	NO	varchar	2048	6144	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(2048)			select		NEVER	NULL
+def	information_schema	SQL_FUNCTIONS	FUNCTION	1	NULL	YES	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)			select		NEVER	NULL
 def	information_schema	STATISTICS	CARDINALITY	10	NULL	YES	bigint	NULL	NULL	19	0	NULL	NULL	NULL	bigint(21)			select		NEVER	NULL
 def	information_schema	STATISTICS	COLLATION	9	NULL	YES	varchar	1	3	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(1)			select		NEVER	NULL
 def	information_schema	STATISTICS	COLUMN_NAME	8	''	NO	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)			select		NEVER	NULL
@@ -716,6 +718,7 @@ NULL	information_schema	GEOMETRY_COLUMNS	SRID	smallint	NULL	NULL	NULL	NULL	small
 3.0000	information_schema	INDEX_STATISTICS	TABLE_NAME	varchar	192	576	utf8	utf8_general_ci	varchar(192)
 3.0000	information_schema	INDEX_STATISTICS	INDEX_NAME	varchar	192	576	utf8	utf8_general_ci	varchar(192)
 NULL	information_schema	INDEX_STATISTICS	ROWS_READ	bigint	NULL	NULL	NULL	NULL	bigint(21)
+3.0000	information_schema	KEYWORDS	WORD	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	KEY_CACHES	KEY_CACHE_NAME	varchar	192	576	utf8	utf8_general_ci	varchar(192)
 NULL	information_schema	KEY_CACHES	SEGMENTS	int	NULL	NULL	NULL	NULL	int(3) unsigned
 NULL	information_schema	KEY_CACHES	SEGMENT_NUMBER	int	NULL	NULL	NULL	NULL	int(3) unsigned
@@ -871,6 +874,7 @@ NULL	information_schema	SPATIAL_REF_SYS	SRID	smallint	NULL	NULL	NULL	NULL	smalli
 3.0000	information_schema	SPATIAL_REF_SYS	AUTH_NAME	varchar	512	1536	utf8	utf8_general_ci	varchar(512)
 NULL	information_schema	SPATIAL_REF_SYS	AUTH_SRID	int	NULL	NULL	NULL	NULL	int(5)
 3.0000	information_schema	SPATIAL_REF_SYS	SRTEXT	varchar	2048	6144	utf8	utf8_general_ci	varchar(2048)
+3.0000	information_schema	SQL_FUNCTIONS	FUNCTION	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	STATISTICS	TABLE_CATALOG	varchar	512	1536	utf8	utf8_general_ci	varchar(512)
 3.0000	information_schema	STATISTICS	TABLE_SCHEMA	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	STATISTICS	TABLE_NAME	varchar	64	192	utf8	utf8_general_ci	varchar(64)

mysql-test/suite/funcs_1/r/is_columns_is_embedded.result

@@ -181,6 +181,7 @@ def	information_schema	INDEX_STATISTICS	INDEX_NAME	3	''	NO	varchar	192	576	NULL
 def	information_schema	INDEX_STATISTICS	ROWS_READ	4	0	NO	bigint	NULL	NULL	19	0	NULL	NULL	NULL	bigint(21)					NEVER	NULL
 def	information_schema	INDEX_STATISTICS	TABLE_NAME	2	''	NO	varchar	192	576	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(192)					NEVER	NULL
 def	information_schema	INDEX_STATISTICS	TABLE_SCHEMA	1	''	NO	varchar	192	576	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(192)					NEVER	NULL
+def	information_schema	KEYWORDS	WORD	1	NULL	YES	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)					NEVER	NULL
 def	information_schema	KEY_CACHES	BLOCK_SIZE	5	0	NO	bigint	NULL	NULL	20	0	NULL	NULL	NULL	bigint(21) unsigned					NEVER	NULL
 def	information_schema	KEY_CACHES	DIRTY_BLOCKS	8	0	NO	bigint	NULL	NULL	20	0	NULL	NULL	NULL	bigint(21) unsigned					NEVER	NULL
 def	information_schema	KEY_CACHES	FULL_SIZE	4	0	NO	bigint	NULL	NULL	20	0	NULL	NULL	NULL	bigint(21) unsigned					NEVER	NULL
@@ -336,6 +337,7 @@ def	information_schema	SPATIAL_REF_SYS	AUTH_NAME	2	''	NO	varchar	512	1536	NULL	N
 def	information_schema	SPATIAL_REF_SYS	AUTH_SRID	3	0	NO	int	NULL	NULL	10	0	NULL	NULL	NULL	int(5)					NEVER	NULL
 def	information_schema	SPATIAL_REF_SYS	SRID	1	0	NO	smallint	NULL	NULL	5	0	NULL	NULL	NULL	smallint(5)					NEVER	NULL
 def	information_schema	SPATIAL_REF_SYS	SRTEXT	4	''	NO	varchar	2048	6144	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(2048)					NEVER	NULL
+def	information_schema	SQL_FUNCTIONS	FUNCTION	1	NULL	YES	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)					NEVER	NULL
 def	information_schema	STATISTICS	CARDINALITY	10	NULL	YES	bigint	NULL	NULL	19	0	NULL	NULL	NULL	bigint(21)					NEVER	NULL
 def	information_schema	STATISTICS	COLLATION	9	NULL	YES	varchar	1	3	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(1)					NEVER	NULL
 def	information_schema	STATISTICS	COLUMN_NAME	8	''	NO	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)					NEVER	NULL
@@ -716,6 +718,7 @@ NULL	information_schema	GEOMETRY_COLUMNS	SRID	smallint	NULL	NULL	NULL	NULL	small
 3.0000	information_schema	INDEX_STATISTICS	TABLE_NAME	varchar	192	576	utf8	utf8_general_ci	varchar(192)
 3.0000	information_schema	INDEX_STATISTICS	INDEX_NAME	varchar	192	576	utf8	utf8_general_ci	varchar(192)
 NULL	information_schema	INDEX_STATISTICS	ROWS_READ	bigint	NULL	NULL	NULL	NULL	bigint(21)
+3.0000	information_schema	KEYWORDS	WORD	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	KEY_CACHES	KEY_CACHE_NAME	varchar	192	576	utf8	utf8_general_ci	varchar(192)
 NULL	information_schema	KEY_CACHES	SEGMENTS	int	NULL	NULL	NULL	NULL	int(3) unsigned
 NULL	information_schema	KEY_CACHES	SEGMENT_NUMBER	int	NULL	NULL	NULL	NULL	int(3) unsigned
@@ -871,6 +874,7 @@ NULL	information_schema	SPATIAL_REF_SYS	SRID	smallint	NULL	NULL	NULL	NULL	smalli
 3.0000	information_schema	SPATIAL_REF_SYS	AUTH_NAME	varchar	512	1536	utf8	utf8_general_ci	varchar(512)
 NULL	information_schema	SPATIAL_REF_SYS	AUTH_SRID	int	NULL	NULL	NULL	NULL	int(5)
 3.0000	information_schema	SPATIAL_REF_SYS	SRTEXT	varchar	2048	6144	utf8	utf8_general_ci	varchar(2048)
+3.0000	information_schema	SQL_FUNCTIONS	FUNCTION	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	STATISTICS	TABLE_CATALOG	varchar	512	1536	utf8	utf8_general_ci	varchar(512)
 3.0000	information_schema	STATISTICS	TABLE_SCHEMA	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	STATISTICS	TABLE_NAME	varchar	64	192	utf8	utf8_general_ci	varchar(64)

mysql-test/suite/funcs_1/r/is_tables_is.result

@@ -405,6 +405,29 @@ user_comment
 Separator	-----------------------------------------------------
 TABLE_CATALOG	def
 TABLE_SCHEMA	information_schema
+TABLE_NAME	KEYWORDS
+TABLE_TYPE	SYSTEM VIEW
+ENGINE	MEMORY
+VERSION	11
+ROW_FORMAT	Fixed
+TABLE_ROWS	#TBLR#
+AVG_ROW_LENGTH	#ARL#
+DATA_LENGTH	#DL#
+MAX_DATA_LENGTH	#MDL#
+INDEX_LENGTH	#IL#
+DATA_FREE	#DF#
+AUTO_INCREMENT	NULL
+CREATE_TIME	#CRT#
+UPDATE_TIME	#UT#
+CHECK_TIME	#CT#
+TABLE_COLLATION	utf8_general_ci
+CHECKSUM	NULL
+CREATE_OPTIONS	#CO#
+TABLE_COMMENT	#TC#
+user_comment	
+Separator	-----------------------------------------------------
+TABLE_CATALOG	def
+TABLE_SCHEMA	information_schema
 TABLE_NAME	KEY_CACHES
 TABLE_TYPE	SYSTEM VIEW
 ENGINE	MEMORY
@@ -704,6 +727,29 @@ user_comment
 Separator	-----------------------------------------------------
 TABLE_CATALOG	def
 TABLE_SCHEMA	information_schema
+TABLE_NAME	SQL_FUNCTIONS
+TABLE_TYPE	SYSTEM VIEW
+ENGINE	MEMORY
+VERSION	11
+ROW_FORMAT	Fixed
+TABLE_ROWS	#TBLR#
+AVG_ROW_LENGTH	#ARL#
+DATA_LENGTH	#DL#
+MAX_DATA_LENGTH	#MDL#
+INDEX_LENGTH	#IL#
+DATA_FREE	#DF#
+AUTO_INCREMENT	NULL
+CREATE_TIME	#CRT#
+UPDATE_TIME	#UT#
+CHECK_TIME	#CT#
+TABLE_COLLATION	utf8_general_ci
+CHECKSUM	NULL
+CREATE_OPTIONS	#CO#
+TABLE_COMMENT	#TC#
+user_comment	
+Separator	-----------------------------------------------------
+TABLE_CATALOG	def
+TABLE_SCHEMA	information_schema
 TABLE_NAME	STATISTICS
 TABLE_TYPE	SYSTEM VIEW
 ENGINE	MEMORY
@@ -1364,6 +1410,29 @@ user_comment
 Separator	-----------------------------------------------------
 TABLE_CATALOG	def
 TABLE_SCHEMA	information_schema
+TABLE_NAME	KEYWORDS
+TABLE_TYPE	SYSTEM VIEW
+ENGINE	MEMORY
+VERSION	11
+ROW_FORMAT	Fixed
+TABLE_ROWS	#TBLR#
+AVG_ROW_LENGTH	#ARL#
+DATA_LENGTH	#DL#
+MAX_DATA_LENGTH	#MDL#
+INDEX_LENGTH	#IL#
+DATA_FREE	#DF#
+AUTO_INCREMENT	NULL
+CREATE_TIME	#CRT#
+UPDATE_TIME	#UT#
+CHECK_TIME	#CT#
+TABLE_COLLATION	utf8_general_ci
+CHECKSUM	NULL
+CREATE_OPTIONS	#CO#
+TABLE_COMMENT	#TC#
+user_comment	
+Separator	-----------------------------------------------------
+TABLE_CATALOG	def
+TABLE_SCHEMA	information_schema
 TABLE_NAME	KEY_CACHES
 TABLE_TYPE	SYSTEM VIEW
 ENGINE	MEMORY
@@ -1663,6 +1732,29 @@ user_comment
 Separator	-----------------------------------------------------
 TABLE_CATALOG	def
 TABLE_SCHEMA	information_schema
+TABLE_NAME	SQL_FUNCTIONS
+TABLE_TYPE	SYSTEM VIEW
+ENGINE	MEMORY
+VERSION	11
+ROW_FORMAT	Fixed
+TABLE_ROWS	#TBLR#
+AVG_ROW_LENGTH	#ARL#
+DATA_LENGTH	#DL#
+MAX_DATA_LENGTH	#MDL#
+INDEX_LENGTH	#IL#
+DATA_FREE	#DF#
+AUTO_INCREMENT	NULL
+CREATE_TIME	#CRT#
+UPDATE_TIME	#UT#
+CHECK_TIME	#CT#
+TABLE_COLLATION	utf8_general_ci
+CHECKSUM	NULL
+CREATE_OPTIONS	#CO#
+TABLE_COMMENT	#TC#
+user_comment	
+Separator	-----------------------------------------------------
+TABLE_CATALOG	def
+TABLE_SCHEMA	information_schema
 TABLE_NAME	STATISTICS
 TABLE_TYPE	SYSTEM VIEW
 ENGINE	MEMORY

mysql-test/suite/funcs_1/r/is_tables_is_embedded.result

@@ -405,6 +405,29 @@ user_comment
 Separator	-----------------------------------------------------
 TABLE_CATALOG	def
 TABLE_SCHEMA	information_schema
+TABLE_NAME	KEYWORDS
+TABLE_TYPE	SYSTEM VIEW
+ENGINE	MEMORY
+VERSION	11
+ROW_FORMAT	Fixed
+TABLE_ROWS	#TBLR#
+AVG_ROW_LENGTH	#ARL#
+DATA_LENGTH	#DL#
+MAX_DATA_LENGTH	#MDL#
+INDEX_LENGTH	#IL#
+DATA_FREE	#DF#
+AUTO_INCREMENT	NULL
+CREATE_TIME	#CRT#
+UPDATE_TIME	#UT#
+CHECK_TIME	#CT#
+TABLE_COLLATION	utf8_general_ci
+CHECKSUM	NULL
+CREATE_OPTIONS	#CO#
+TABLE_COMMENT	#TC#
+user_comment	
+Separator	-----------------------------------------------------
+TABLE_CATALOG	def
+TABLE_SCHEMA	information_schema
 TABLE_NAME	KEY_CACHES
 TABLE_TYPE	SYSTEM VIEW
 ENGINE	MEMORY
@@ -704,6 +727,29 @@ user_comment
 Separator	-----------------------------------------------------
 TABLE_CATALOG	def
 TABLE_SCHEMA	information_schema
+TABLE_NAME	SQL_FUNCTIONS
+TABLE_TYPE	SYSTEM VIEW
+ENGINE	MEMORY
+VERSION	11
+ROW_FORMAT	Fixed
+TABLE_ROWS	#TBLR#
+AVG_ROW_LENGTH	#ARL#
+DATA_LENGTH	#DL#
+MAX_DATA_LENGTH	#MDL#
+INDEX_LENGTH	#IL#
+DATA_FREE	#DF#
+AUTO_INCREMENT	NULL
+CREATE_TIME	#CRT#
+UPDATE_TIME	#UT#
+CHECK_TIME	#CT#
+TABLE_COLLATION	utf8_general_ci
+CHECKSUM	NULL
+CREATE_OPTIONS	#CO#
+TABLE_COMMENT	#TC#
+user_comment	
+Separator	-----------------------------------------------------
+TABLE_CATALOG	def
+TABLE_SCHEMA	information_schema
 TABLE_NAME	STATISTICS
 TABLE_TYPE	SYSTEM VIEW
 ENGINE	MEMORY
@@ -1364,6 +1410,29 @@ user_comment
 Separator	-----------------------------------------------------
 TABLE_CATALOG	def
 TABLE_SCHEMA	information_schema
+TABLE_NAME	KEYWORDS
+TABLE_TYPE	SYSTEM VIEW
+ENGINE	MEMORY
+VERSION	11
+ROW_FORMAT	Fixed
+TABLE_ROWS	#TBLR#
+AVG_ROW_LENGTH	#ARL#
+DATA_LENGTH	#DL#
+MAX_DATA_LENGTH	#MDL#
+INDEX_LENGTH	#IL#
+DATA_FREE	#DF#
+AUTO_INCREMENT	NULL
+CREATE_TIME	#CRT#
+UPDATE_TIME	#UT#
+CHECK_TIME	#CT#
+TABLE_COLLATION	utf8_general_ci
+CHECKSUM	NULL
+CREATE_OPTIONS	#CO#
+TABLE_COMMENT	#TC#
+user_comment	
+Separator	-----------------------------------------------------
+TABLE_CATALOG	def
+TABLE_SCHEMA	information_schema
 TABLE_NAME	KEY_CACHES
 TABLE_TYPE	SYSTEM VIEW
 ENGINE	MEMORY
@@ -1663,6 +1732,29 @@ user_comment
 Separator	-----------------------------------------------------
 TABLE_CATALOG	def
 TABLE_SCHEMA	information_schema
+TABLE_NAME	SQL_FUNCTIONS
+TABLE_TYPE	SYSTEM VIEW
+ENGINE	MEMORY
+VERSION	11
+ROW_FORMAT	Fixed
+TABLE_ROWS	#TBLR#
+AVG_ROW_LENGTH	#ARL#
+DATA_LENGTH	#DL#
+MAX_DATA_LENGTH	#MDL#
+INDEX_LENGTH	#IL#
+DATA_FREE	#DF#
+AUTO_INCREMENT	NULL
+CREATE_TIME	#CRT#
+UPDATE_TIME	#UT#
+CHECK_TIME	#CT#
+TABLE_COLLATION	utf8_general_ci
+CHECKSUM	NULL
+CREATE_OPTIONS	#CO#
+TABLE_COMMENT	#TC#
+user_comment	
+Separator	-----------------------------------------------------
+TABLE_CATALOG	def
+TABLE_SCHEMA	information_schema
 TABLE_NAME	STATISTICS
 TABLE_TYPE	SYSTEM VIEW
 ENGINE	MEMORY

sql/handler.h

@@ -741,6 +741,7 @@ enum enum_schema_tables
   SCH_FILES,
   SCH_GLOBAL_STATUS,
   SCH_GLOBAL_VARIABLES,
+  SCH_KEYWORDS,
   SCH_KEY_CACHES,
   SCH_KEY_COLUMN_USAGE,
   SCH_OPEN_TABLES,
@@ -756,6 +757,7 @@ enum enum_schema_tables
   SCH_SESSION_STATUS,
   SCH_SESSION_VARIABLES,
   SCH_STATISTICS,
+  SCH_SQL_FUNCTIONS,
   SCH_SYSTEM_VARIABLES,
   SCH_TABLES,
   SCH_TABLESPACES,

sql/item_create.cc

@@ -6745,13 +6745,6 @@ Create_func_year_week::create_native(THD *thd, LEX_STRING name,
   return func;
 }
 
-
-struct Native_func_registry
-{
-  LEX_STRING name;
-  Create_func *builder;
-};
-
 #define BUILDER(F) & F::s_singleton
 
 #ifdef HAVE_SPATIAL
@@ -6771,7 +6764,7 @@ struct Native_func_registry
   - keep 1 line per entry, it makes grep | sort easier
 */
 
-static Native_func_registry func_array[] =
+Native_func_registry func_array[] =
 {
   { { C_STRING_WITH_LEN("ABS") }, BUILDER(Create_func_abs)},
   { { C_STRING_WITH_LEN("ACOS") }, BUILDER(Create_func_acos)},
@@ -7113,6 +7106,8 @@ static Native_func_registry func_array[] =
   { {0, 0}, NULL}
 };
 
+size_t func_array_length= sizeof(func_array) / sizeof(Native_func_registry) - 1;
+
 static HASH native_functions_hash;
 
 extern "C" uchar*

sql/item_create.h

@@ -183,6 +183,12 @@ Item *create_temporal_literal(THD *thd, const String *str,
                                  type, send_error);
 }
 
+struct Native_func_registry
+{
+  LEX_STRING name;
+  Create_func *builder;
+};
+
 int item_create_init();
 void item_create_cleanup();
 

sql/lex.h

@@ -45,7 +45,7 @@ SYM_GROUP sym_group_rtree= {"RTree keys", "HAVE_RTREE_KEYS"};
   lists
 */
 
-static SYMBOL symbols[] = {
+SYMBOL symbols[] = {
   { "&&",		SYM(AND_AND_SYM)},
   { "<=",		SYM(LE)},
   { "<>",		SYM(NE)},
@@ -687,7 +687,7 @@ static SYMBOL symbols[] = {
 };
 
 
-static SYMBOL sql_functions[] = {
+SYMBOL sql_functions[] = {
   { "ADDDATE",		SYM(ADDDATE_SYM)},
   { "BIT_AND",		SYM(BIT_AND)},
   { "BIT_OR",		SYM(BIT_OR)},
@@ -732,4 +732,7 @@ static SYMBOL sql_functions[] = {
   { "VAR_SAMP",		SYM(VAR_SAMP_SYM)},
 };
 
+size_t symbols_length= sizeof(symbols) / sizeof(SYMBOL);
+size_t sql_functions_length= sizeof(sql_functions) / sizeof(SYMBOL);
+
 #endif /* LEX_INCLUDED */

sql/sql_show.cc

@@ -62,6 +62,19 @@
 #ifdef WITH_PARTITION_STORAGE_ENGINE
 #include "ha_partition.h"
 #endif
+
+#include "lex_symbol.h"
+#define KEYWORD_SIZE 64
+
+extern SYMBOL symbols[];
+extern size_t symbols_length;
+
+extern SYMBOL sql_functions[];
+extern size_t sql_functions_length;
+
+extern Native_func_registry func_array[];
+extern size_t func_array_length;
+
 enum enum_i_s_events_fields
 {
   ISE_EVENT_CATALOG= 0,
@@ -7556,6 +7569,60 @@ int fill_variables(THD *thd, TABLE_LIST *tables, COND *cond)
   DBUG_RETURN(res);
 }
 
+int add_symbol_to_table(const char* name, TABLE* table){
+  DBUG_ENTER("add_symbol_to_table");
+
+  uint length= strlen(name);
+
+  // If you've added a new SQL keyword longer than KEYWORD_SIZE,
+  // please increase the defined max length
+  DBUG_ASSERT(length < KEYWORD_SIZE);
+
+  restore_record(table, s->default_values);
+  table->field[0]->set_notnull();
+  table->field[0]->store(name, length,
+                         system_charset_info);
+  if (schema_table_store_record(table->in_use, table))
+    DBUG_RETURN(1);
+
+  DBUG_RETURN(0);
+}
+
+int fill_i_s_keywords(THD *thd, TABLE_LIST *tables, COND *cond)
+{
+  DBUG_ENTER("fill_i_s_keywords");
+
+  TABLE *table= tables->table;
+
+  for (uint i= 0; i < symbols_length; i++){
+    const char *name= symbols[i].name;
+    if (add_symbol_to_table(name, table))
+      DBUG_RETURN(1);
+  }
+
+  DBUG_RETURN(0);
+}
+
+int fill_i_s_sql_functions(THD *thd, TABLE_LIST *tables, COND *cond) {
+  DBUG_ENTER("fill_i_s_sql_functions");
+
+  TABLE *table= tables->table;
+
+  for (uint i= 0; i < sql_functions_length; i++){
+    const char *name= sql_functions[i].name;
+    if (add_symbol_to_table(name, table))
+      DBUG_RETURN(1);
+  }
+
+  for (uint i= 0; i < func_array_length; i++){
+    const char *name= func_array[i].name.str;
+    if (add_symbol_to_table(name, table))
+      DBUG_RETURN(1);
+  }
+
+  DBUG_RETURN(0);
+}
+
 
 int fill_status(THD *thd, TABLE_LIST *tables, COND *cond)
 {
@@ -8763,6 +8830,18 @@ ST_FIELD_INFO enabled_roles_fields_info[]=
   {0, 0, MYSQL_TYPE_STRING, 0, 0, 0, SKIP_OPEN_TABLE}
 };
 
+ST_FIELD_INFO keywords_field_info[]=
+{
+  {"WORD", KEYWORD_SIZE, MYSQL_TYPE_STRING, 0, MY_I_S_MAYBE_NULL, 0, SKIP_OPEN_TABLE},
+  {0, 0, MYSQL_TYPE_STRING, 0, 0, 0, SKIP_OPEN_TABLE}
+};
+
+ST_FIELD_INFO sql_functions_field_info[]=
+{
+  {"FUNCTION", KEYWORD_SIZE, MYSQL_TYPE_STRING, 0, MY_I_S_MAYBE_NULL, 0, SKIP_OPEN_TABLE},
+  {0, 0, MYSQL_TYPE_STRING, 0, 0, 0, SKIP_OPEN_TABLE}
+};
+
 
 ST_FIELD_INFO engines_fields_info[]=
 {
@@ -9465,6 +9544,8 @@ ST_SCHEMA_TABLE schema_tables[]=
    fill_status, make_old_format, 0, 0, -1, 0, 0},
   {"GLOBAL_VARIABLES", variables_fields_info, 0,
    fill_variables, make_old_format, 0, 0, -1, 0, 0},
+  {"KEYWORDS", keywords_field_info, 0,
+   fill_i_s_keywords, 0, 0, -1, -1, 0, 0},
   {"KEY_CACHES", keycache_fields_info, 0,
    fill_key_cache_tables, 0, 0, -1,-1, 0, 0},
   {"KEY_COLUMN_USAGE", key_column_usage_fields_info, 0,
@@ -9500,6 +9581,8 @@ ST_SCHEMA_TABLE schema_tables[]=
   {"STATISTICS", stat_fields_info, 0,
    get_all_tables, make_old_format, get_schema_stat_record, 1, 2, 0,
    OPEN_TABLE_ONLY|OPTIMIZE_I_S_TABLE},
+  {"SQL_FUNCTIONS", sql_functions_field_info, 0,
+   fill_i_s_sql_functions, 0, 0, -1, -1, 0, 0},
   {"SYSTEM_VARIABLES", sysvars_fields_info, 0,
    fill_sysvars, make_old_format, 0, 0, -1, 0, 0},
   {"TABLES", tables_fields_info, 0,