File size: 2,273 Bytes
80a0e81 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | {
"schema_version": "1.0",
"scenario_id": "string_to_large_string",
"title": "string to large_string",
"category": "representation",
"description": "A string column becomes large_string (64-bit offsets). Values are unchanged; they include an empty string, whitespace, the literal text NULL, CJK, an emoji, and 'cafe' with the accent both composed (U+00E9) and decomposed (e + U+0301).",
"notes": [
"The difference exists only in the stored Arrow schema. Both files have the same Parquet schema (BYTE_ARRAY, String), so a reader that ignores the Arrow schema sees no change at all."
],
"tags": [
"change-type",
"string",
"offsets",
"unicode",
"arrow-only"
],
"row_identity": [
"id"
],
"versions": [
{
"id": "v0",
"file": "v0.parquet",
"row_count": 8,
"fingerprint": "sha256:af037b683e64ba1bd9e63dd778b55bea85f8e898f85becfa6f4450ba01a036c7",
"schema": [
{
"name": "id",
"type": "int64",
"nullable": false
},
{
"name": "label",
"type": "string",
"nullable": true
}
],
"writer": {
"use_dictionary": true
},
"dictionaries": []
},
{
"id": "v1",
"file": "v1.parquet",
"row_count": 8,
"fingerprint": "sha256:4ed55bd1dd61a05cd056a56e3d0554a6f764bd6a03522e3189372a421d692f9d",
"schema": [
{
"name": "id",
"type": "int64",
"nullable": false
},
{
"name": "label",
"type": "large_string",
"nullable": true
}
],
"writer": {
"use_dictionary": true
},
"dictionaries": []
}
],
"transitions": [
{
"from": "v0",
"to": "v1",
"mutations": [
{
"kind": "change_type",
"path": "label",
"old_type": "string",
"new_type": "large_string"
}
],
"invariants": {
"row_count_preserved": true,
"row_identity_preserved": true,
"rows_retained": true,
"paths_retained": true,
"common_values_preserved": true,
"value_changes": [],
"parquet_schema_preserved": true
}
}
]
}
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