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types: fix delete error when convert string to float or int (#10861) #11279

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merged 2 commits into from
Jul 17, 2019
Merged

types: fix delete error when convert string to float or int (#10861) #11279

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7f3ae00
fix delete empty string bug (#10861)
DQinYuan Jun 19, 2019
bf15d1a
Merge branch 'release-2.1' into release-2.1-fcc15b1256e4
zz-jason Jul 17, 2019
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1 change: 1 addition & 0 deletions executor/executor_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -336,6 +336,7 @@ func checkCases(tests []testCase, ld *executor.LoadDataInfo,
ctx.GetSessionVars().StmtCtx.DupKeyAsWarning = true
ctx.GetSessionVars().StmtCtx.BadNullAsWarning = true
ctx.GetSessionVars().StmtCtx.InLoadDataStmt = true
ctx.GetSessionVars().StmtCtx.InDeleteStmt = false
data, reachLimit, err1 := ld.InsertData(tt.data1, tt.data2)
c.Assert(err1, IsNil)
c.Assert(reachLimit, IsFalse)
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4 changes: 4 additions & 0 deletions types/convert.go
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Expand Up @@ -550,6 +550,10 @@ func ConvertJSONToDecimal(sc *stmtctx.StatementContext, j json.BinaryJSON) (*MyD

// getValidFloatPrefix gets prefix of string which can be successfully parsed as float.
func getValidFloatPrefix(sc *stmtctx.StatementContext, s string) (valid string, err error) {
if sc.InDeleteStmt && s == "" {
return "0", nil
}

var (
sawDot bool
sawDigit bool
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23 changes: 23 additions & 0 deletions types/convert_test.go
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Expand Up @@ -459,6 +459,29 @@ func (s *testTypeConvertSuite) TestStrToNum(c *C) {
testStrToFloat(c, "1e649", math.MaxFloat64, false, nil)
testStrToFloat(c, "-1e649", -math.MaxFloat64, true, ErrTruncatedWrongVal)
testStrToFloat(c, "-1e649", -math.MaxFloat64, false, nil)

// for issue #10806
testDeleteEmptyStringError(c)
}

func testDeleteEmptyStringError(c *C) {
sc := new(stmtctx.StatementContext)
sc.InDeleteStmt = true

str := ""
expect := 0

val, err := StrToInt(sc, str)
c.Assert(err, IsNil)
c.Assert(val, Equals, int64(expect))

val1, err := StrToUint(sc, str)
c.Assert(err, IsNil)
c.Assert(val1, Equals, uint64(expect))

val2, err := StrToFloat(sc, str)
c.Assert(err, IsNil)
c.Assert(val2, Equals, float64(expect))
}

func (s *testTypeConvertSuite) TestFieldTypeToStr(c *C) {
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