MDEV-34864 SHOW INDEX FROM - SEQ_IN_INDEX to ULong

MySQL-Connector-Net casts SEQ_IN_INDEX to uint and will
raise an exception if the type is a System.Int64.

As we don't support a huge number of multi-columns in
an index reducing to a uint is sufficient to represent
all values and maintain compatibility with MySQL-Connector-Net.

This matches the type (uint) returned by MySQL-8.3 and 8.0.

Reviewer: Alexander Barkov <bar@mariadb.com>

mysql-test/main/show_check.result

@@ -66,7 +66,7 @@ Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is
 def	information_schema	STATISTICS	STATISTICS	TABLE_NAME	Table	253	64	2	N	4097	0	8
 def	information_schema	STATISTICS	STATISTICS	NON_UNIQUE	Non_unique	8	1	1	N	36865	0	63
 def	information_schema	STATISTICS	STATISTICS	INDEX_NAME	Key_name	253	64	7	N	4097	0	8
-def	information_schema	STATISTICS	STATISTICS	SEQ_IN_INDEX	Seq_in_index	8	2	1	N	36865	0	63
+def	information_schema	STATISTICS	STATISTICS	SEQ_IN_INDEX	Seq_in_index	3	2	1	N	36897	0	63
 def	information_schema	STATISTICS	STATISTICS	COLUMN_NAME	Column_name	253	64	1	N	4097	0	8
 def	information_schema	STATISTICS	STATISTICS	COLLATION	Collation	253	1	1	Y	4096	0	8
 def	information_schema	STATISTICS	STATISTICS	CARDINALITY	Cardinality	8	21	1	Y	36864	0	63
@@ -650,7 +650,7 @@ Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is
 def	information_schema	STATISTICS	STATISTICS	TABLE_NAME	Table	253	64	2	N	4097	0	63
 def	information_schema	STATISTICS	STATISTICS	NON_UNIQUE	Non_unique	8	1	1	N	36865	0	63
 def	information_schema	STATISTICS	STATISTICS	INDEX_NAME	Key_name	253	64	7	N	4097	0	63
-def	information_schema	STATISTICS	STATISTICS	SEQ_IN_INDEX	Seq_in_index	8	2	1	N	36865	0	63
+def	information_schema	STATISTICS	STATISTICS	SEQ_IN_INDEX	Seq_in_index	3	2	1	N	36897	0	63
 def	information_schema	STATISTICS	STATISTICS	COLUMN_NAME	Column_name	253	64	6	N	4097	0	63
 def	information_schema	STATISTICS	STATISTICS	COLLATION	Collation	253	1	1	Y	4096	0	63
 def	information_schema	STATISTICS	STATISTICS	CARDINALITY	Cardinality	8	21	1	Y	36864	0	63
@@ -920,7 +920,7 @@ Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is
 def	information_schema	STATISTICS	STATISTICS	TABLE_NAME	Table	253	192	2	N	4097	0	33
 def	information_schema	STATISTICS	STATISTICS	NON_UNIQUE	Non_unique	8	1	1	N	36865	0	63
 def	information_schema	STATISTICS	STATISTICS	INDEX_NAME	Key_name	253	192	7	N	4097	0	33
-def	information_schema	STATISTICS	STATISTICS	SEQ_IN_INDEX	Seq_in_index	8	2	1	N	36865	0	63
+def	information_schema	STATISTICS	STATISTICS	SEQ_IN_INDEX	Seq_in_index	3	2	1	N	36897	0	63
 def	information_schema	STATISTICS	STATISTICS	COLUMN_NAME	Column_name	253	192	1	N	4097	0	33
 def	information_schema	STATISTICS	STATISTICS	COLLATION	Collation	253	3	1	Y	4096	0	33
 def	information_schema	STATISTICS	STATISTICS	CARDINALITY	Cardinality	8	21	1	Y	36864	0	63

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

@@ -356,7 +356,7 @@ def	information_schema	STATISTICS	INDEX_TYPE	14	NULL	NO	varchar	16	48	NULL	NULL
 def	information_schema	STATISTICS	NON_UNIQUE	4	NULL	NO	bigint	NULL	NULL	19	0	NULL	NULL	NULL	bigint(1)			select		NEVER	NULL
 def	information_schema	STATISTICS	NULLABLE	13	NULL	NO	varchar	3	9	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(3)			select		NEVER	NULL
 def	information_schema	STATISTICS	PACKED	12	NULL	YES	varchar	10	30	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(10)			select		NEVER	NULL
-def	information_schema	STATISTICS	SEQ_IN_INDEX	7	NULL	NO	bigint	NULL	NULL	19	0	NULL	NULL	NULL	bigint(2)			select		NEVER	NULL
+def	information_schema	STATISTICS	SEQ_IN_INDEX	7	NULL	NO	int	NULL	NULL	10	0	NULL	NULL	NULL	int(2) unsigned			select		NEVER	NULL
 def	information_schema	STATISTICS	SUB_PART	11	NULL	YES	bigint	NULL	NULL	19	0	NULL	NULL	NULL	bigint(3)			select		NEVER	NULL
 def	information_schema	STATISTICS	TABLE_CATALOG	1	NULL	NO	varchar	512	1536	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(512)			select		NEVER	NULL
 def	information_schema	STATISTICS	TABLE_NAME	3	NULL	NO	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)			select		NEVER	NULL
@@ -898,7 +898,7 @@ NULL	information_schema	SPATIAL_REF_SYS	AUTH_SRID	int	NULL	NULL	NULL	NULL	int(5)
 NULL	information_schema	STATISTICS	NON_UNIQUE	bigint	NULL	NULL	NULL	NULL	bigint(1)
 3.0000	information_schema	STATISTICS	INDEX_SCHEMA	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	STATISTICS	INDEX_NAME	varchar	64	192	utf8	utf8_general_ci	varchar(64)
-NULL	information_schema	STATISTICS	SEQ_IN_INDEX	bigint	NULL	NULL	NULL	NULL	bigint(2)
+NULL	information_schema	STATISTICS	SEQ_IN_INDEX	int	NULL	NULL	NULL	NULL	int(2) unsigned
 3.0000	information_schema	STATISTICS	COLUMN_NAME	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	STATISTICS	COLLATION	varchar	1	3	utf8	utf8_general_ci	varchar(1)
 NULL	information_schema	STATISTICS	CARDINALITY	bigint	NULL	NULL	NULL	NULL	bigint(21)

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

@@ -356,7 +356,7 @@ def	information_schema	STATISTICS	INDEX_TYPE	14	NULL	NO	varchar	16	48	NULL	NULL
 def	information_schema	STATISTICS	NON_UNIQUE	4	NULL	NO	bigint	NULL	NULL	19	0	NULL	NULL	NULL	bigint(1)					NEVER	NULL
 def	information_schema	STATISTICS	NULLABLE	13	NULL	NO	varchar	3	9	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(3)					NEVER	NULL
 def	information_schema	STATISTICS	PACKED	12	NULL	YES	varchar	10	30	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(10)					NEVER	NULL
-def	information_schema	STATISTICS	SEQ_IN_INDEX	7	NULL	NO	bigint	NULL	NULL	19	0	NULL	NULL	NULL	bigint(2)					NEVER	NULL
+def	information_schema	STATISTICS	SEQ_IN_INDEX	7	NULL	NO	int	NULL	NULL	10	0	NULL	NULL	NULL	int(2) unsigned					NEVER	NULL
 def	information_schema	STATISTICS	SUB_PART	11	NULL	YES	bigint	NULL	NULL	19	0	NULL	NULL	NULL	bigint(3)					NEVER	NULL
 def	information_schema	STATISTICS	TABLE_CATALOG	1	NULL	NO	varchar	512	1536	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(512)					NEVER	NULL
 def	information_schema	STATISTICS	TABLE_NAME	3	NULL	NO	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)					NEVER	NULL
@@ -898,7 +898,7 @@ NULL	information_schema	SPATIAL_REF_SYS	AUTH_SRID	int	NULL	NULL	NULL	NULL	int(5)
 NULL	information_schema	STATISTICS	NON_UNIQUE	bigint	NULL	NULL	NULL	NULL	bigint(1)
 3.0000	information_schema	STATISTICS	INDEX_SCHEMA	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	STATISTICS	INDEX_NAME	varchar	64	192	utf8	utf8_general_ci	varchar(64)
-NULL	information_schema	STATISTICS	SEQ_IN_INDEX	bigint	NULL	NULL	NULL	NULL	bigint(2)
+NULL	information_schema	STATISTICS	SEQ_IN_INDEX	int	NULL	NULL	NULL	NULL	int(2) unsigned
 3.0000	information_schema	STATISTICS	COLUMN_NAME	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	STATISTICS	COLLATION	varchar	1	3	utf8	utf8_general_ci	varchar(1)
 NULL	information_schema	STATISTICS	CARDINALITY	bigint	NULL	NULL	NULL	NULL	bigint(21)

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

@@ -34,7 +34,7 @@ TABLE_NAME	varchar(64)	NO		NULL
 NON_UNIQUE	bigint(1)	NO		NULL	
 INDEX_SCHEMA	varchar(64)	NO		NULL	
 INDEX_NAME	varchar(64)	NO		NULL	
-SEQ_IN_INDEX	bigint(2)	NO		NULL	
+SEQ_IN_INDEX	int(2) unsigned	NO		NULL	
 COLUMN_NAME	varchar(64)	NO		NULL	
 COLLATION	varchar(1)	YES		NULL	
 CARDINALITY	bigint(21)	YES		NULL	
@@ -53,7 +53,7 @@ STATISTICS	CREATE TEMPORARY TABLE `STATISTICS` (
   `NON_UNIQUE` bigint(1) NOT NULL,
   `INDEX_SCHEMA` varchar(64) NOT NULL,
   `INDEX_NAME` varchar(64) NOT NULL,
-  `SEQ_IN_INDEX` bigint(2) NOT NULL,
+  `SEQ_IN_INDEX` int(2) unsigned NOT NULL,
   `COLUMN_NAME` varchar(64) NOT NULL,
   `COLLATION` varchar(1),
   `CARDINALITY` bigint(21),
@@ -72,7 +72,7 @@ TABLE_NAME	varchar(64)	NO		NULL
 NON_UNIQUE	bigint(1)	NO		NULL	
 INDEX_SCHEMA	varchar(64)	NO		NULL	
 INDEX_NAME	varchar(64)	NO		NULL	
-SEQ_IN_INDEX	bigint(2)	NO		NULL	
+SEQ_IN_INDEX	int(2) unsigned	NO		NULL	
 COLUMN_NAME	varchar(64)	NO		NULL	
 COLLATION	varchar(1)	YES		NULL	
 CARDINALITY	bigint(21)	YES		NULL	

sql/sql_show.cc

@@ -9392,7 +9392,7 @@ ST_FIELD_INFO stat_fields_info[]=
   Column("NON_UNIQUE",    SLonglong(1),NOT_NULL, "Non_unique",  OPEN_FRM_ONLY),
   Column("INDEX_SCHEMA",  Name(),      NOT_NULL,                OPEN_FRM_ONLY),
   Column("INDEX_NAME",    Name(),      NOT_NULL, "Key_name",    OPEN_FRM_ONLY),
-  Column("SEQ_IN_INDEX",  SLonglong(2),NOT_NULL, "Seq_in_index",OPEN_FRM_ONLY),
+  Column("SEQ_IN_INDEX",  ULong(2),    NOT_NULL, "Seq_in_index",OPEN_FRM_ONLY),
   Column("COLUMN_NAME",   Name(),      NOT_NULL, "Column_name", OPEN_FRM_ONLY),
   Column("COLLATION",     Varchar(1),  NULLABLE, "Collation",   OPEN_FULL_TABLE),
   Column("CARDINALITY",   SLonglong(), NULLABLE, "Cardinality", OPEN_FULL_TABLE),