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feat: Added support for datetime format #957

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feat: Added support for datetime format #957

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fe07a17
feat: Added support for datetime format
inoth Dec 6, 2024
aa48110
fix: handler "Error return value of `binary.Write` is not checked"
inoth Dec 12, 2024
dd2c4b1
Merge branch 'master' into master
lance6716 Dec 15, 2024
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49 changes: 48 additions & 1 deletion mysql/resultset_helper.go
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Original file line number Diff line number Diff line change
@@ -1,13 +1,54 @@
package mysql

import (
"bytes"
"encoding/binary"
"math"
"strconv"
"time"

"github.com/pingcap/errors"
"github.com/siddontang/go/hack"
)

func toBinaryDateTime(t time.Time) ([]byte, error) {
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@lance6716 lance6716 Dec 15, 2024 •
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There's FormatBinaryDateTime under mysql/util.go. Can you move this function adjacent to FormatBinaryDateTime? So we can compare their logic easier.

Also, please add a unit test for FormatBinaryDateTime and ToBinaryDateTime, covert some value back and forth

var buf bytes.Buffer

if t.IsZero() {
return nil, nil
}

year, month, day := t.Year(), t.Month(), t.Day()
hour, min, sec := t.Hour(), t.Minute(), t.Second()
nanosec := t.Nanosecond()

if nanosec > 0 {
buf.WriteByte(byte(11))
binary.Write(&buf, binary.LittleEndian, uint16(year))
buf.WriteByte(byte(month))
buf.WriteByte(byte(day))
buf.WriteByte(byte(hour))
buf.WriteByte(byte(min))
buf.WriteByte(byte(sec))
binary.Write(&buf, binary.LittleEndian, uint32(nanosec/1000))
} else if hour > 0 || min > 0 || sec > 0 {
buf.WriteByte(byte(7))
binary.Write(&buf, binary.LittleEndian, uint16(year))
buf.WriteByte(byte(month))
buf.WriteByte(byte(day))
buf.WriteByte(byte(hour))
buf.WriteByte(byte(min))
buf.WriteByte(byte(sec))
} else {
buf.WriteByte(byte(4))
binary.Write(&buf, binary.LittleEndian, uint16(year))
buf.WriteByte(byte(month))
buf.WriteByte(byte(day))
}

return buf.Bytes(), nil
}

func FormatTextValue(value interface{}) ([]byte, error) {
switch v := value.(type) {
case int8:
Expand Down Expand Up @@ -38,6 +79,8 @@ func FormatTextValue(value interface{}) ([]byte, error) {
return v, nil
case string:
return hack.Slice(v), nil
case time.Time:
return hack.Slice(v.Format(time.DateTime)), nil
case nil:
return nil, nil
default:
Expand Down Expand Up @@ -75,6 +118,8 @@ func formatBinaryValue(value interface{}) ([]byte, error) {
return v, nil
case string:
return hack.Slice(v), nil
case time.Time:
return toBinaryDateTime(v)
default:
return nil, errors.Errorf("invalid type %T", value)
}
Expand All @@ -90,6 +135,8 @@ func fieldType(value interface{}) (typ uint8, err error) {
typ = MYSQL_TYPE_DOUBLE
case string, []byte:
typ = MYSQL_TYPE_VAR_STRING
case time.Time:
typ = MYSQL_TYPE_DATETIME
case nil:
typ = MYSQL_TYPE_NULL
default:
Expand All @@ -109,7 +156,7 @@ func formatField(field *Field, value interface{}) error {
case float32, float64:
field.Charset = 63
field.Flag = BINARY_FLAG | NOT_NULL_FLAG
case string, []byte:
case string, []byte, time.Time:
field.Charset = 33
case nil:
field.Charset = 33
Expand Down
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