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ebda548d0d
by item->val_str() may be a substring of the passed string.
Disallow string=its_substring assignment in String::operator=().
mysql-test/r/func_misc.result:
Testcase for BUG#7716
mysql-test/t/func_misc.test:
Testcase for BUG#7716
sql/item_cmpfunc.cc:
Fix for BUG#7716: in in_string::set() take into account that the string returned
by item->val_str(S) may be not S but use the buffer owned by S.
sql/sql_string.h:
* Added assert: String& String::operator=(const String&) may not be used to do
assignments like str = string_that_uses_buffer_owned_by_str
* Added String::uses_buffer_owned_by().
51 lines
1.9 KiB
Text
51 lines
1.9 KiB
Text
select format(1.5555,0),format(123.5555,1),format(1234.5555,2),format(12345.55555,3),format(123456.5555,4),format(1234567.5555,5),format("12345.2399",2);
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format(1.5555,0) format(123.5555,1) format(1234.5555,2) format(12345.55555,3) format(123456.5555,4) format(1234567.5555,5) format("12345.2399",2)
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2 123.6 1,234.56 12,345.556 123,456.5555 1,234,567.55550 12,345.24
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select inet_ntoa(inet_aton("255.255.255.255.255.255.255.255"));
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inet_ntoa(inet_aton("255.255.255.255.255.255.255.255"))
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NULL
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select inet_aton("255.255.255.255.255"),inet_aton("255.255.1.255"),inet_aton("0.1.255");
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inet_aton("255.255.255.255.255") inet_aton("255.255.1.255") inet_aton("0.1.255")
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1099511627775 4294902271 65791
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select inet_ntoa(1099511627775),inet_ntoa(4294902271),inet_ntoa(511);
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inet_ntoa(1099511627775) inet_ntoa(4294902271) inet_ntoa(511)
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NULL 255.255.1.255 0.0.1.255
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select hex(inet_aton('127'));
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hex(inet_aton('127'))
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7F
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select hex(inet_aton('127.1'));
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hex(inet_aton('127.1'))
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7F000001
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select hex(inet_aton('127.1.1'));
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hex(inet_aton('127.1.1'))
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7F010001
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select length(uuid()), charset(uuid()), length(unhex(replace(uuid(),_utf8'-',_utf8'')));
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length(uuid()) charset(uuid()) length(unhex(replace(uuid(),_utf8'-',_utf8'')))
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36 utf8 16
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select length(format('nan', 2)) > 0;
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length(format('nan', 2)) > 0
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1
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select concat("$",format(2500,2));
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concat("$",format(2500,2))
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$2,500.00
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create table t1 ( a timestamp );
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insert into t1 values ( '2004-01-06 12:34' );
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select a from t1 where left(a+0,6) in ( left(20040106,6) );
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a
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2004-01-06 12:34:00
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select a from t1 where left(a+0,6) = ( left(20040106,6) );
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a
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2004-01-06 12:34:00
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select a from t1 where right(a+0,6) in ( right(20040106123400,6) );
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a
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2004-01-06 12:34:00
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select a from t1 where right(a+0,6) = ( right(20040106123400,6) );
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a
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2004-01-06 12:34:00
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select a from t1 where mid(a+0,6,3) in ( mid(20040106123400,6,3) );
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a
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2004-01-06 12:34:00
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select a from t1 where mid(a+0,6,3) = ( mid(20040106123400,6,3) );
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a
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2004-01-06 12:34:00
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drop table t1;
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