docs: Document missing SQL data types - #24471
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## main #24471 +/- ##
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alamb
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Aug 19, 2026
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Thanks @nuno-faria -- I had some querstions about binary
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| By default, string types are mapped to `Utf8View`. This can be configured using the `datafusion.sql_parser.map_string_types_to_utf8view` setting. When set to `false`, string types are mapped to `Utf8` instead. | ||
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| Note that `CHAR`, `VARCHAR`, `STRING`, `CHARACTER VARYING`, `CHAR VARYING`, and `NVARCHAR` can |
| | `BLOB` | `Binary` | | ||
| | `BINARY` | `Binary` | | ||
| | `VARBINARY` | `Binary` | | ||
| | `BYTES` | `Binary` | |
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Are these really supported
I tried and I got a not supported error:
DataFusion CLI v55.0.0
> create table foo (x BLOB);
This feature is not implemented: Unsupported SQL type BLOB
> create table foo (x BINARY);
This feature is not implemented: Unsupported SQL type BINARY
> create table foo (x VARBINARY);
This feature is not implemented: Unsupported SQL type VARBINARY
> create table foo (x BYTES);
This feature is not implemented: Unsupported SQL type BYTES
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They are being added here #24398, so we need to wait until that is merged.
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Which issue does this PR close?
Rationale for this change
The data types page (https://datafusion.apache.org/user-guide/sql/data_types.html) is quite outdated, e.g., still claiming that
ARRAYis not supported. This PR updates the missing types and also adds missing aliases.This should only be merged after #24398.
What changes are included in this PR?
ARRAY,STRUCT, andMAP, as well as alias for existing types.Are these changes tested?
Documentation only.
Are there any user-facing changes?
No.