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types: fix incompatible implementation of jsonpath extraction (#35320) #35796

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types: fix incompatible implementation of jsonpath extraction (#35320) #35796

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4 changes: 4 additions & 0 deletions types/json/binary_functions.go
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Original file line number Diff line number Diff line change
Expand Up @@ -221,6 +221,10 @@ func (bj BinaryJSON) Extract(pathExprList []PathExpression) (ret BinaryJSON, fou
// even if len(pathExprList) equals to 1.
found = true
ret = buf[0]
// Fix https://github.com/pingcap/tidb/issues/30352
if pathExprList[0].ContainsAnyAsterisk() {
ret = buildBinaryArray(buf)
}
} else {
found = true
ret = buildBinaryArray(buf)
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4 changes: 2 additions & 2 deletions types/json/binary_test.go
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Expand Up @@ -62,12 +62,12 @@ func TestBinaryJSONExtract(t *testing.T) {
{bj1, []string{"$.*[0]"}, mustParseBinaryFromString(t, `["world", 1, true, "d"]`), true, nil},
{bj1, []string{`$.a[*]."aa"`}, mustParseBinaryFromString(t, `["bb", "cc"]`), true, nil},
{bj1, []string{`$."\"hello\""`}, mustParseBinaryFromString(t, `"world"`), true, nil},
{bj1, []string{`$**[1]`}, mustParseBinaryFromString(t, `"2"`), true, nil},
{bj1, []string{`$**[1]`}, mustParseBinaryFromString(t, `["2"]`), true, nil},
{bj3, []string{`$.properties.$type`}, mustParseBinaryFromString(t, `"TiDB"`), true, nil},
{bj4, []string{`$.properties.$type$type`}, mustParseBinaryFromString(t, `{"$a$a" : "TiDB"}`), true, nil},
{bj4, []string{`$.properties.$type$type.$a$a`}, mustParseBinaryFromString(t, `"TiDB"`), true, nil},
{bj5, []string{`$.properties.$type.$a.$b`}, mustParseBinaryFromString(t, `"TiDB"`), true, nil},
{bj5, []string{`$.properties.$type.$a.*[0]`}, mustParseBinaryFromString(t, `"TiDB"`), true, nil},
{bj5, []string{`$.properties.$type.$a.*[0]`}, mustParseBinaryFromString(t, `["TiDB"]`), true, nil},

// test extract with multi path expressions.
{bj1, []string{"$.a", "$[5]"}, mustParseBinaryFromString(t, `[[1, "2", {"aa": "bb"}, 4.0, {"aa": "cc"}]]`), true, nil},
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