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This is an automated cherry-pick of pingcap#53590
Signed-off-by: ti-chi-bot <[email protected]>
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‎expression/builtin_compare.go

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Original file line numberDiff line numberDiff line change
@@ -1481,7 +1481,14 @@ func RefineComparedConstant(ctx sessionctx.Context, targetFieldType types.FieldT
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targetFieldType = *types.NewFieldType(mysql.TypeLonglong)
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}
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var intDatum types.Datum
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<<<<<<< HEAD:expression/builtin_compare.go
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intDatum, err = dt.ConvertTo(sc, &targetFieldType)
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=======
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// Disable AllowNegativeToUnsigned to make sure return 0 when underflow happens.
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oriTypeCtx := evalCtx.TypeCtx()
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newTypeCtx := oriTypeCtx.WithFlags(oriTypeCtx.Flags().WithAllowNegativeToUnsigned(false))
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intDatum, err = dt.ConvertTo(newTypeCtx, &targetFieldType)
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>>>>>>> 68d12954fe4 (expression: fix wrong result when convert float to unsigned (#53590)):pkg/expression/builtin_compare.go
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if err != nil {
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if terror.ErrorEqual(err, types.ErrOverflow) {
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return &Constant{

‎tests/integrationtest/r/expression/cast.result

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select cast('' as signed);
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cast('' as signed)
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0
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Level Code Message
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Warning 1292 Truncated incorrect INTEGER value: ''
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select cast('12345abcde' as signed);
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cast('12345abcde' as signed)
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12345
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Level Code Message
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Warning 1292 Truncated incorrect INTEGER value: '12345abcde'
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select cast('123e456' as signed);
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cast('123e456' as signed)
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123
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Level Code Message
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Warning 1292 Truncated incorrect INTEGER value: '123e456'
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select cast('-12345abcde' as signed);
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cast('-12345abcde' as signed)
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-12345
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Level Code Message
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Warning 1292 Truncated incorrect INTEGER value: '-12345abcde'
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select cast('-123e456' as signed);
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cast('-123e456' as signed)
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-123
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Level Code Message
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Warning 1292 Truncated incorrect INTEGER value: '-123e456'
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select coercibility(binary('a'));
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coercibility(binary('a'))
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2
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select coercibility(cast('a' as char(10)));
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coercibility(cast('a' as char(10)))
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2
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select coercibility(convert('abc', char(10)));
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coercibility(convert('abc', char(10)))
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2
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drop table if exists t;
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create table t(d1 double, f float, d2 decimal(24,8));
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insert into t values(0, 0, 0);
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select cast(111.1 as datetime) from t;
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cast(111.1 as datetime)
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2000-01-11 00:00:00
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select cast(1311.1 as datetime) from t;
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cast(1311.1 as datetime)
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NULL
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insert into t values(111.1, 1122.1, 31212.111);
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insert into t values(121212.1111, 1121212.111111, 11121212.111111);
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insert into t values(99991111.1111111, 101.1111111, 20121212121212.1111111);
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insert into t values(NULL, NULL, NULL);
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insert into t values(1.1, 48.1, 100.1);
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insert into t values(1301.11, 1131.111, 100001111.111);
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insert into t values(20121212121260.1111111, 20121212126012.1111111, 20121212241212.1111111);
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select cast(d1 as datetime), cast(f as datetime), cast(d2 as datetime) from t;
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cast(d1 as datetime) cast(f as datetime) cast(d2 as datetime)
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NULL NULL NULL
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NULL NULL NULL
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NULL NULL NULL
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NULL NULL NULL
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0000-00-00 00:00:00 0000-00-00 00:00:00 0000-00-00 00:00:00
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2000-01-11 00:00:00 2000-11-22 00:00:00 2003-12-12 00:00:00
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2012-12-12 00:00:00 0112-12-12 00:00:00 1112-12-12 00:00:00
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9999-11-11 00:00:00 2000-01-01 00:00:00 2012-12-12 12:12:12
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drop table if exists t;
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create table t (col1 bigint, col2 double, col3 decimal, col4 varchar(20), col5 json);
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insert into t values (1, 1, 1, "1", "1");
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insert into t values (null, null, null, null, null);
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select cast(col1 as time), cast(col2 as time), cast(col3 as time), cast(col4 as time), cast(col5 as time) from t where col1 = 1;
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cast(col1 as time) cast(col2 as time) cast(col3 as time) cast(col4 as time) cast(col5 as time)
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00:00:01 00:00:01 00:00:01 00:00:01 NULL
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select cast(col1 as time), cast(col2 as time), cast(col3 as time), cast(col4 as time), cast(col5 as time) from t where col1 is null;
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cast(col1 as time) cast(col2 as time) cast(col3 as time) cast(col4 as time) cast(col5 as time)
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NULL NULL NULL NULL NULL
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select cast(col1 as time(31)) from t where col1 is null;
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Error 1426 (42000): Too big precision 31 specified for column 'CAST'. Maximum is 6.
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select cast(col2 as time(31)) from t where col1 is null;
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Error 1426 (42000): Too big precision 31 specified for column 'CAST'. Maximum is 6.
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select cast(col3 as time(31)) from t where col1 is null;
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Error 1426 (42000): Too big precision 31 specified for column 'CAST'. Maximum is 6.
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select cast(col4 as time(31)) from t where col1 is null;
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Error 1426 (42000): Too big precision 31 specified for column 'CAST'. Maximum is 6.
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select cast(col5 as time(31)) from t where col1 is null;
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Error 1426 (42000): Too big precision 31 specified for column 'CAST'. Maximum is 6.
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drop table if exists t;
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create table t(a varchar(50));
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insert into t values ('2020-01-01 12:00:00.123456 +0600 PST');
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insert into t values ('2020-01-01 12:00:00.123456 -0600 PST');
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insert into t values ('2020-01-01 12:00:00.123456');
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select cast(a as datetime(3)) from t;
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cast(a as datetime(3))
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2020-01-01 12:00:00.123
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2020-01-01 12:00:00.123
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2020-01-01 12:00:00.123
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drop table if exists t1;
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create table t1 (c1 text);
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insert into t1 values ('a');
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update t1 set c1 = cast('61qw' as decimal);
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Error 1292 (22007): Truncated incorrect DECIMAL value: '61qw'
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select cast('61qw' as decimal);
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cast('61qw' as decimal)
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61
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Level Code Message
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Warning 1292 Truncated incorrect DECIMAL value: '61qw'
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drop table if exists t;
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create table t (y year);
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insert into t values (cast('14:15' as time));
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select 1 from t where y = YEAR(CURDATE());
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1
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1
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select cast(cast('14:15' as time) as year) = YEAR(CURDATE());
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cast(cast('14:15' as time) as year) = YEAR(CURDATE())
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1
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explain select null as a union all select 'a' as a;
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id estRows task access object operator info
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Union_8 2.00 root
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├─Projection_10 1.00 root <nil>->Column#3
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│ └─TableDual_11 1.00 root rows:1
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└─Projection_12 1.00 root a->Column#3
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└─TableDual_13 1.00 root rows:1
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select null as a union all select 'a' as a;
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a
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NULL
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a
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drop table if exists t0;
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create table t0(c0 tinyint(1) unsigned not null );
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insert into t0 values (1);
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select * from t0 where case 0 when t0.c0 > -1.194192591e9 then null else 1 end;
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c0
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1
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select t0.c0 > -1.194192591e9 from t0;
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t0.c0 > -1.194192591e9
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1
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select t0.c0 < -1.194192591e9 from t0;
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t0.c0 < -1.194192591e9
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0
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select -1.194192591e9 > t0.c0 from t0;
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-1.194192591e9 > t0.c0
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0
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select -1.194192591e9 < t0.c0 from t0;
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-1.194192591e9 < t0.c0
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1
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select t0.c0 > 1.194192591e9 from t0;
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t0.c0 > 1.194192591e9
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0
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select t0.c0 < 1.194192591e9 from t0;
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t0.c0 < 1.194192591e9
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1
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select 1.194192591e9 > t0.c0 from t0;
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1.194192591e9 > t0.c0
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1
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select 1.194192591e9 < t0.c0 from t0;
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1.194192591e9 < t0.c0
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0

‎tests/integrationtest/t/expression/cast.test

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# TestCastStrToInt
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--enable_warnings
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select cast('' as signed);
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select cast('12345abcde' as signed);
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select cast('123e456' as signed);
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select cast('-12345abcde' as signed);
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select cast('-123e456' as signed);
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--disable_warnings
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# TestCastCoer
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select coercibility(binary('a'));
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select coercibility(cast('a' as char(10)));
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select coercibility(convert('abc', char(10)));
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# TestCastRealAsTime
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drop table if exists t;
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create table t(d1 double, f float, d2 decimal(24,8));
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insert into t values(0, 0, 0);
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select cast(111.1 as datetime) from t;
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select cast(1311.1 as datetime) from t;
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insert into t values(111.1, 1122.1, 31212.111);
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insert into t values(121212.1111, 1121212.111111, 11121212.111111);
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insert into t values(99991111.1111111, 101.1111111, 20121212121212.1111111);
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insert into t values(NULL, NULL, NULL);
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insert into t values(1.1, 48.1, 100.1);
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insert into t values(1301.11, 1131.111, 100001111.111);
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insert into t values(20121212121260.1111111, 20121212126012.1111111, 20121212241212.1111111);
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-- sorted_result
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select cast(d1 as datetime), cast(f as datetime), cast(d2 as datetime) from t;
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# TestCastAsTime
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drop table if exists t;
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create table t (col1 bigint, col2 double, col3 decimal, col4 varchar(20), col5 json);
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insert into t values (1, 1, 1, "1", "1");
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insert into t values (null, null, null, null, null);
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select cast(col1 as time), cast(col2 as time), cast(col3 as time), cast(col4 as time), cast(col5 as time) from t where col1 = 1;
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select cast(col1 as time), cast(col2 as time), cast(col3 as time), cast(col4 as time), cast(col5 as time) from t where col1 is null;
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-- error 1426
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select cast(col1 as time(31)) from t where col1 is null;
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-- error 1426
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select cast(col2 as time(31)) from t where col1 is null;
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-- error 1426
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select cast(col3 as time(31)) from t where col1 is null;
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-- error 1426
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select cast(col4 as time(31)) from t where col1 is null;
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-- error 1426
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select cast(col5 as time(31)) from t where col1 is null;
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drop table if exists t;
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create table t(a varchar(50));
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insert into t values ('2020-01-01 12:00:00.123456 +0600 PST');
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insert into t values ('2020-01-01 12:00:00.123456 -0600 PST');
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insert into t values ('2020-01-01 12:00:00.123456');
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select cast(a as datetime(3)) from t;
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# TestCastErrMsg
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drop table if exists t1;
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create table t1 (c1 text);
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insert into t1 values ('a');
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--error 1292
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update t1 set c1 = cast('61qw' as decimal);
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--enable_warnings
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select cast('61qw' as decimal);
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--disable_warnings
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# TestCastTimeAsYear
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drop table if exists t;
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create table t (y year);
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insert into t values (cast('14:15' as time));
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select 1 from t where y = YEAR(CURDATE());
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select cast(cast('14:15' as time) as year) = YEAR(CURDATE());
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# TestIssue49526
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explain select null as a union all select 'a' as a;
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--sorted_result
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select null as a union all select 'a' as a;
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# TestNegFloatConvertToUnsigned
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drop table if exists t0;
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create table t0(c0 tinyint(1) unsigned not null );
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insert into t0 values (1);
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select * from t0 where case 0 when t0.c0 > -1.194192591e9 then null else 1 end;
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select t0.c0 > -1.194192591e9 from t0;
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select t0.c0 < -1.194192591e9 from t0;
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select -1.194192591e9 > t0.c0 from t0;
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select -1.194192591e9 < t0.c0 from t0;
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select t0.c0 > 1.194192591e9 from t0;
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select t0.c0 < 1.194192591e9 from t0;
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select 1.194192591e9 > t0.c0 from t0;
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select 1.194192591e9 < t0.c0 from t0;

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