The fix for MDEV-8723 unintentionally broke vcol_supported_sql_funcs_myisam

and vcol_supported_sql_funcs_innodb. Moving the test for using CHARSET(),
COLLATION(), COERCIBILITY() in virtual column from
vcol_supported_sql_funcs_xxx to vcol_blocked_sql_funcs_xxx,
as these functions are not supported in virtual columns any longer.
Discussed with Sanja on IRC.

mysql-test/suite/vcol/inc/vcol_blocked_sql_funcs_main.inc

@@ -102,6 +102,18 @@ if (!$skip_full_text_checks)
 -- error ER_VIRTUAL_COLUMN_FUNCTION_IS_NOT_ALLOWED
 create table t1 (a varchar(1024), b varchar(1024) as (benchmark(a,3)));
 
+--echo # CHARSET()
+-- error ER_CONST_EXPR_IN_VCOL
+create table t1 (a varchar(64), b varchar(64) as (charset(a)));
+
+--echo # COERCIBILITY()
+-- error ER_CONST_EXPR_IN_VCOL
+create table t1 (a varchar(64), b int as (coercibility(a)));
+
+--echo # COLLATION()
+-- error ER_CONST_EXPR_IN_VCOL
+create table t1 (a varchar(64), b varchar(64) as (collation(a)));
+
 --echo # CONNECTION_ID()
 -- error ER_VIRTUAL_COLUMN_FUNCTION_IS_NOT_ALLOWED
 create table t1 (a int as (connection_id()));

mysql-test/suite/vcol/inc/vcol_supported_sql_funcs_main.inc

@@ -1142,24 +1142,6 @@ let $values1 = 5,default;
 let $rows = 1;
 --source suite/vcol/inc/vcol_supported_sql_funcs.inc
 
---echo # CHARSET()
-let $cols = a varchar(1024), b varchar(1024) as (charset(a));
-let $values1 = 'abc',default;
-let $rows = 1;
---source suite/vcol/inc/vcol_supported_sql_funcs.inc
-
---echo # COERCIBILITY()
-let $cols = a varchar(1024), b int as (coercibility(a));
-let $values1 = 'abc',default;
-let $rows = 1;
---source suite/vcol/inc/vcol_supported_sql_funcs.inc
-
---echo # COLLATION()
-let $cols = a varchar(1024), b varchar(1024) as (collation(a));
-let $values1 = 'abc',default;
-let $rows = 1;
---source suite/vcol/inc/vcol_supported_sql_funcs.inc
-
 --echo # COMPRESS(), UNCOMPRESS()
 let $cols = a varchar(1024), b varchar(1024) as (uncompress(compress(a)));
 let $values1 = 'MySQL',default;

mysql-test/suite/vcol/r/vcol_blocked_sql_funcs_innodb.result

@@ -61,6 +61,15 @@ ERROR HY000: Function or expression is not allowed for column 'b'
 # BENCHMARK()
 create table t1 (a varchar(1024), b varchar(1024) as (benchmark(a,3)));
 ERROR HY000: Function or expression is not allowed for column 'b'
+# CHARSET()
+create table t1 (a varchar(64), b varchar(64) as (charset(a)));
+ERROR HY000: Constant expression in computed column function is not allowed
+# COERCIBILITY()
+create table t1 (a varchar(64), b int as (coercibility(a)));
+ERROR HY000: Constant expression in computed column function is not allowed
+# COLLATION()
+create table t1 (a varchar(64), b varchar(64) as (collation(a)));
+ERROR HY000: Constant expression in computed column function is not allowed
 # CONNECTION_ID()
 create table t1 (a int as (connection_id()));
 ERROR HY000: Function or expression is not allowed for column 'a'

mysql-test/suite/vcol/r/vcol_blocked_sql_funcs_myisam.result

@@ -63,6 +63,15 @@ ERROR HY000: Function or expression is not allowed for column 'b'
 # BENCHMARK()
 create table t1 (a varchar(1024), b varchar(1024) as (benchmark(a,3)));
 ERROR HY000: Function or expression is not allowed for column 'b'
+# CHARSET()
+create table t1 (a varchar(64), b varchar(64) as (charset(a)));
+ERROR HY000: Constant expression in computed column function is not allowed
+# COERCIBILITY()
+create table t1 (a varchar(64), b int as (coercibility(a)));
+ERROR HY000: Constant expression in computed column function is not allowed
+# COLLATION()
+create table t1 (a varchar(64), b varchar(64) as (collation(a)));
+ERROR HY000: Constant expression in computed column function is not allowed
 # CONNECTION_ID()
 create table t1 (a int as (connection_id()));
 ERROR HY000: Function or expression is not allowed for column 'a'

mysql-test/suite/vcol/r/vcol_supported_sql_funcs_innodb.result

@@ -2756,51 +2756,6 @@ a	b
 5	2
 drop table t1;
 set sql_warnings = 0;
-# CHARSET()
-set sql_warnings = 1;
-create table t1 (a varchar(1024), b varchar(1024) as (charset(a)));
-show create table t1;
-Table	Create Table
-t1	CREATE TABLE `t1` (
-  `a` varchar(1024) DEFAULT NULL,
-  `b` varchar(1024) AS (charset(a)) VIRTUAL
-) ENGINE=InnoDB DEFAULT CHARSET=latin1
-insert into t1 values ('abc',default);
-select * from t1;
-a	b
-abc	latin1
-drop table t1;
-set sql_warnings = 0;
-# COERCIBILITY()
-set sql_warnings = 1;
-create table t1 (a varchar(1024), b int as (coercibility(a)));
-show create table t1;
-Table	Create Table
-t1	CREATE TABLE `t1` (
-  `a` varchar(1024) DEFAULT NULL,
-  `b` int(11) AS (coercibility(a)) VIRTUAL
-) ENGINE=InnoDB DEFAULT CHARSET=latin1
-insert into t1 values ('abc',default);
-select * from t1;
-a	b
-abc	2
-drop table t1;
-set sql_warnings = 0;
-# COLLATION()
-set sql_warnings = 1;
-create table t1 (a varchar(1024), b varchar(1024) as (collation(a)));
-show create table t1;
-Table	Create Table
-t1	CREATE TABLE `t1` (
-  `a` varchar(1024) DEFAULT NULL,
-  `b` varchar(1024) AS (collation(a)) VIRTUAL
-) ENGINE=InnoDB DEFAULT CHARSET=latin1
-insert into t1 values ('abc',default);
-select * from t1;
-a	b
-abc	latin1_swedish_ci
-drop table t1;
-set sql_warnings = 0;
 # COMPRESS(), UNCOMPRESS()
 set sql_warnings = 1;
 create table t1 (a varchar(1024), b varchar(1024) as (uncompress(compress(a))));

mysql-test/suite/vcol/r/vcol_supported_sql_funcs_myisam.result

@@ -2756,51 +2756,6 @@ a	b
 5	2
 drop table t1;
 set sql_warnings = 0;
-# CHARSET()
-set sql_warnings = 1;
-create table t1 (a varchar(1024), b varchar(1024) as (charset(a)));
-show create table t1;
-Table	Create Table
-t1	CREATE TABLE `t1` (
-  `a` varchar(1024) DEFAULT NULL,
-  `b` varchar(1024) AS (charset(a)) VIRTUAL
-) ENGINE=MyISAM DEFAULT CHARSET=latin1
-insert into t1 values ('abc',default);
-select * from t1;
-a	b
-abc	latin1
-drop table t1;
-set sql_warnings = 0;
-# COERCIBILITY()
-set sql_warnings = 1;
-create table t1 (a varchar(1024), b int as (coercibility(a)));
-show create table t1;
-Table	Create Table
-t1	CREATE TABLE `t1` (
-  `a` varchar(1024) DEFAULT NULL,
-  `b` int(11) AS (coercibility(a)) VIRTUAL
-) ENGINE=MyISAM DEFAULT CHARSET=latin1
-insert into t1 values ('abc',default);
-select * from t1;
-a	b
-abc	2
-drop table t1;
-set sql_warnings = 0;
-# COLLATION()
-set sql_warnings = 1;
-create table t1 (a varchar(1024), b varchar(1024) as (collation(a)));
-show create table t1;
-Table	Create Table
-t1	CREATE TABLE `t1` (
-  `a` varchar(1024) DEFAULT NULL,
-  `b` varchar(1024) AS (collation(a)) VIRTUAL
-) ENGINE=MyISAM DEFAULT CHARSET=latin1
-insert into t1 values ('abc',default);
-select * from t1;
-a	b
-abc	latin1_swedish_ci
-drop table t1;
-set sql_warnings = 0;
 # COMPRESS(), UNCOMPRESS()
 set sql_warnings = 1;
 create table t1 (a varchar(1024), b varchar(1024) as (uncompress(compress(a))));