2
drop table if exists t1;
6
# If it's BLOB or BINARY or VARBINARY, then output = input.
8
select hex(weight_string(0x010203));
11
# "AS CHAR ( int )" causes padding on the right. The pad
12
# character is always space, that is, 0x20 or 0x0020.
13
# The padding occurs before the conversion to a weight.
14
# The value of "int" is the number of characters, not the number of bytes.
16
select hex(weight_string('aa' as char(3)));
19
# The minimum value of 'int' is 1.
22
select hex(weight_string('a' as char(-1)));
24
select hex(weight_string('a' as char(0)));
25
select hex(weight_string('a' as char(1)));
28
# If 'int' is smaller than the length of 'string',
29
# truncation will occur with no warning.
31
select hex(weight_string('ab' as char(1)));
34
# If "AS CHAR ( int )" is omitted, there is no padding and no truncation.
36
select hex(weight_string('ab'));
39
# "AS BINARY ( int )" is like CHAR(int) but causes padding of 0x00
40
# so one doesn't have to use "CAST(string AS BINARY(int))".
42
select hex(weight_string('aa' as binary(3)));
43
select hex(weight_string(cast('aa' as binary(3))));
46
# If and only if one specifies "LEVEL numeric-list" (not "range"),
47
# one may follow any "number" with [ASC|DESC][REVERSE]
50
select hex(weight_string('ab' level 1-1 ASC));
52
select hex(weight_string('ab' level 1-1 DESC));
54
select hex(weight_string('ab' level 1-1 REVERSE));
57
# If one says "DESC", then the weights come out NOTed
58
# or negated for that level.
59
# If one says "REVERSE", then the weights come out in
60
# reverse order for that level, that is, starting with
61
# the last character and ending with the first character.
63
select hex(weight_string('ab' level 1 ASC));
64
select hex(weight_string('ab' level 1 DESC));
65
select hex(weight_string('ab' level 1 REVERSE));
66
select hex(weight_string('ab' level 1 DESC REVERSE));
69
# If the result length is less than or equal to the
70
# maximum possible length for the VARBINARY data type,
71
# then the result data type is VARBINARY. Otherwise
72
# the result data type is BLOB.
74
create table t1 select weight_string('test') as w;
77
create table t1 select weight_string(repeat('t',66000)) as w;
82
# If input is NULL, then output is NULL.
84
select weight_string(NULL);
87
# WEIGHT_STRING and REVERSE will not be a new reserved word.
89
select 1 as weight_string, 2 as reverse;
92
# Check that collation derivation is copied from the argument
94
select coercibility(weight_string('test'));
97
# Bug#33663 Character sets: weight_string function,
98
# varchar column, wrong result
100
create table t1 (s1 varchar(5));
101
insert into t1 values ('a'),(null);
102
select hex(weight_string(s1)) from t1 order by s1;