Binary Protocol Error with TEXT Type When Using Rust sqlx and ShardingSphere-Proxy

[echo-ethan]

Bug Report

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Which version of ShardingSphere did you use?

(Please fill in, e.g. 5.5.2)

Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?

ShardingSphere-Proxy

Expected behavior

When inserting and reading rows via Rust sqlx with prepared (binary) statements, there should be no errors. Data should be successfully written and retrieved.

Actual behavior

When connecting via ShardingSphere-Proxy, the following errors occur during insert or query operations:

Database(PgDatabaseError {
severity: Error,
code: "58000",
message: "Unknown exception.\nMore details: java.lang.IllegalArgumentException: Cannot find PostgreSQL type 'TEXT' in column type when process binary protocol value",
detail: None, hint: None, position: None, where: None, schema: None, table: None, column: None, data_type: None, constraint: None, file: None, line: None, routine: None
})

Database(PgDatabaseError {
severity: Error,
code: "0A000",
message: "Unsupported SQL operation: binary mode.",
detail: None, hint: None, position: None, where: None, schema: None, table: None, column: None, data_type: None, constraint: None, file: None, line: None, routine: None
})

If I connect directly to PostgreSQL (bypassing ShardingSphere-Proxy), Rust sqlx works without error.

Reason analyze (If you can)

It seems ShardingSphere-Proxy lacks binary protocol support for PostgreSQL TEXT (OID=25) when the driver uses binary mode parameters. Possibly there is no dedicated TEXT binary protocol implementation in PostgreSQLBinaryProtocolValueFactory.