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expression: fix flen for timestamp_add #30213

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merged 6 commits into from
Nov 30, 2021
Merged

expression: fix flen for timestamp_add #30213

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15577a5
Done
wjhuang2016 Nov 29, 2021
8709088
Merge branch 'master' into fix_timestamp_add
xhebox Nov 30, 2021
849bebf
Merge branch 'master' into fix_timestamp_add
ti-chi-bot Nov 30, 2021
071909e
Merge branch 'master' into fix_timestamp_add
ti-chi-bot Nov 30, 2021
e5d6efb
Merge branch 'master' into fix_timestamp_add
ti-chi-bot Nov 30, 2021
baeb177
fix test
wjhuang2016 Nov 30, 2021
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12 changes: 12 additions & 0 deletions cmd/explaintest/r/explain_generate_column_substitute.result
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Original file line number Diff line number Diff line change
Expand Up @@ -558,3 +558,15 @@ select * from PK_S_MULTI_30_tmp use index (eidx) where truncate(col1, 3) <= trun
COL1 COL2 COL3
-1.7976931348623157e308 0 0
-1.7976931348623157e308 1 0
create table t004(a date);
insert into t004 values ('2021-08-20');
select * from t004 where timestampadd(microsecond, 1, a) = timestampadd(microsecond, 1, '2021-08-20');
a
2021-08-20
alter table t004 add index eidx ((timestampadd(microsecond, 1, a)));
select * from t004 use index(eidx) where timestampadd(microsecond, 1, a) = timestampadd(microsecond, 1, '2021-08-20');
a
2021-08-20
select * from t004 ignore index (eidx) where timestampadd(microsecond, 1, a) = timestampadd(microsecond, 1, '2021-08-20');
a
2021-08-20
7 changes: 7 additions & 0 deletions cmd/explaintest/t/explain_generate_column_substitute.test
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Expand Up @@ -252,3 +252,10 @@ select * from `PK_S_MULTI_30_tmp` ignore index (expression_index) where floor(c
alter table PK_S_MULTI_30_tmp add index eidx ((truncate(col1, 3)));
select * from PK_S_MULTI_30_tmp ignore index (eidx) where truncate(col1, 3) <= truncate(-1.7976931348623157e308, 3);
select * from PK_S_MULTI_30_tmp use index (eidx) where truncate(col1, 3) <= truncate(-1.7976931348623157e308, 3);

create table t004(a date);
insert into t004 values ('2021-08-20');
select * from t004 where timestampadd(microsecond, 1, a) = timestampadd(microsecond, 1, '2021-08-20');
alter table t004 add index eidx ((timestampadd(microsecond, 1, a)));
select * from t004 use index(eidx) where timestampadd(microsecond, 1, a) = timestampadd(microsecond, 1, '2021-08-20');
select * from t004 ignore index (eidx) where timestampadd(microsecond, 1, a) = timestampadd(microsecond, 1, '2021-08-20');
15 changes: 14 additions & 1 deletion expression/builtin_time.go
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Expand Up @@ -6714,7 +6714,20 @@ func (c *timestampAddFunctionClass) getFunction(ctx sessionctx.Context, args []E
if err != nil {
return nil, err
}
bf.tp = &types.FieldType{Tp: mysql.TypeString, Flen: mysql.MaxDatetimeWidthNoFsp, Decimal: types.UnspecifiedLength}
flen := mysql.MaxDatetimeWidthNoFsp
con, ok := args[0].(*Constant)
if !ok {
return nil, errors.New("should not happened")
}
unit, null, err := con.EvalString(ctx, chunk.Row{})
if null || err != nil {
return nil, errors.New("should not happened")
}
if unit == ast.TimeUnitMicrosecond.String() {
flen = mysql.MaxDatetimeWidthWithFsp
}

bf.tp.Flen = flen
sig := &builtinTimestampAddSig{bf}
sig.setPbCode(tipb.ScalarFuncSig_TimestampAdd)
return sig, nil
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15 changes: 8 additions & 7 deletions expression/typeinfer_test.go
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Expand Up @@ -1232,13 +1232,14 @@ func (s *InferTypeSuite) createTestCase4TimeFuncs() []typeInferTestCase {
{`date_format('2017-06-15', '%r%r%r%r')`, mysql.TypeVarString, charset.CharsetUTF8MB4, mysql.NotNullFlag, 44, types.UnspecifiedLength},
{`date_format(151113102019.12, '%r%r%r%r')`, mysql.TypeVarString, charset.CharsetUTF8MB4, mysql.NotNullFlag, 44, types.UnspecifiedLength},

{"timestampadd(HOUR, c_int_d, c_timestamp_d)", mysql.TypeString, charset.CharsetUTF8MB4, 0, 19, types.UnspecifiedLength},
{"timestampadd(minute, c_double_d, c_timestamp_d)", mysql.TypeString, charset.CharsetUTF8MB4, 0, 19, types.UnspecifiedLength},
{"timestampadd(SeconD, c_int_d, c_char)", mysql.TypeString, charset.CharsetUTF8MB4, 0, 19, types.UnspecifiedLength},
{"timestampadd(SeconD, c_varchar, c_time_d)", mysql.TypeString, charset.CharsetUTF8MB4, 0, 19, types.UnspecifiedLength},
{"timestampadd(SeconD, c_int_d, c_datetime)", mysql.TypeString, charset.CharsetUTF8MB4, 0, 19, types.UnspecifiedLength},
{"timestampadd(SeconD, c_double_d, c_bchar)", mysql.TypeString, charset.CharsetUTF8MB4, 0, 19, types.UnspecifiedLength},
{"timestampadd(SeconD, c_int_d, c_blob_d)", mysql.TypeString, charset.CharsetUTF8MB4, 0, 19, types.UnspecifiedLength},
{"timestampadd(HOUR, c_int_d, c_timestamp_d)", mysql.TypeString, charset.CharsetUTF8MB4, 0, mysql.MaxDatetimeWidthNoFsp, types.UnspecifiedLength},
{"timestampadd(minute, c_double_d, c_timestamp_d)", mysql.TypeString, charset.CharsetUTF8MB4, 0, mysql.MaxDatetimeWidthNoFsp, types.UnspecifiedLength},
{"timestampadd(SeconD, c_int_d, c_char)", mysql.TypeString, charset.CharsetUTF8MB4, 0, mysql.MaxDatetimeWidthNoFsp, types.UnspecifiedLength},
{"timestampadd(SeconD, c_varchar, c_time_d)", mysql.TypeString, charset.CharsetUTF8MB4, 0, mysql.MaxDatetimeWidthNoFsp, types.UnspecifiedLength},
{"timestampadd(SeconD, c_int_d, c_datetime)", mysql.TypeString, charset.CharsetUTF8MB4, 0, mysql.MaxDatetimeWidthNoFsp, types.UnspecifiedLength},
{"timestampadd(SeconD, c_double_d, c_bchar)", mysql.TypeString, charset.CharsetUTF8MB4, 0, mysql.MaxDatetimeWidthNoFsp, types.UnspecifiedLength},
{"timestampadd(SeconD, c_int_d, c_blob_d)", mysql.TypeString, charset.CharsetUTF8MB4, 0, mysql.MaxDatetimeWidthNoFsp, types.UnspecifiedLength},
{"timestampadd(microsecond, c_int_d, c_blob_d)", mysql.TypeString, charset.CharsetUTF8MB4, 0, mysql.MaxDatetimeWidthWithFsp, types.UnspecifiedLength},

{"to_seconds(c_char)", mysql.TypeLonglong, charset.CharsetBin, mysql.BinaryFlag, 20, 0},
{"to_days(c_char)", mysql.TypeLonglong, charset.CharsetBin, mysql.BinaryFlag, 20, 0},
Expand Down