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Explain list handling differences between Parquet and CSV #2395

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Merged
merged 3 commits into from
Jun 5, 2025
Merged

Explain list handling differences between Parquet and CSV #2395

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43e67e4
Add note about list import and differences by type.
meistermeier Jun 3, 2025
7e3fdf0
Update modules/ROOT/pages/import.adoc
meistermeier Jun 4, 2025
34cd641
Update modules/ROOT/pages/import.adoc
meistermeier Jun 4, 2025
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6 changes: 6 additions & 0 deletions modules/ROOT/pages/import.adoc
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Expand Up @@ -1288,6 +1288,12 @@ A different delimiter can be specified with `--array-delimiter`.
Arrays are not affected by the `--normalize-types` flag.
For example, if you want a byte array to be stored as a Cypher long array, you must explicitly declare the property as `long[]`.

[NOTE]
====
CSV based import will not import empty arrays, because they cannot be distinguished from arrays that are set to `null`.
The Parquet import distinguishes between them, and will import empty arrays as empty arrays and `null` as `null`.
====

Boolean values are _true_ if they match exactly the text `true`. All other values are _false_.
Values that contain the delimiter character need to be escaped by enclosing in double quotation marks, or by using a different delimiter character with the `--delimiter` option.

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