Yuvraj-cyborg opened a new pull request, #18696:
URL: https://github.com/apache/datafusion/pull/18696
Description:
Fixes inconsistency where table registration methods (`[register_table]`,
`[register_csv]`, etc.) always normalized identifiers to lowercase, ignoring
the `[enable_ident_normalization]` configuration.
Problem
When `[enable_ident_normalization=false]` :
`[register_csv("DATA", ...)]` normalized the name to "data"
`SELECT * FROM DATA looked for "DATA"`
Result - [table 'DATA' not found] error
Root Cause
`[TableReference::parse_str()]` hardcoded `[ignore_case=false]` , forcing
normalization regardless of session settings.
Solution
Introduced `ResolveTableReference` trait to parse table references
respecting the session's `[enable_ident_normalization]` setting. Updated
`[register_table()]`, `[deregister_table()]`, and `[table_exist()]` to use this
trait.
Changes :
- Added `ResolveTableReference` trait for context-aware table reference
parsing.
- Modified table registration/lookup methods to respect normalization
settings.
- Added test example demonstrating the fix.
```
cargo run --example test_ident_normalization
```
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