VARCHAR and INT comparison in query

[metesynnada]

Describe the bug
It does not yield an error when comparing VARCHAR and integer.

// create local execution context
let ctx = SessionContext::new();
let testdata = datafusion::test_util::arrow_test_data();
ctx.sql(&format!(
    "CREATE EXTERNAL TABLE aggregate_test_100 (
    c1  VARCHAR NOT NULL,
    c2  TINYINT NOT NULL,
    c3  SMALLINT NOT NULL,
    c4  SMALLINT NOT NULL,
    c5  INTEGER NOT NULL,
    c6  BIGINT NOT NULL,
    c7  SMALLINT NOT NULL,
    c8  INT NOT NULL,
    c9  INT UNSIGNED NOT NULL,
    c10 BIGINT UNSIGNED NOT NULL,
    c11 FLOAT NOT NULL,
    c12 DOUBLE NOT NULL,
    c13 VARCHAR NOT NULL
)
STORED AS CSV
WITH HEADER ROW
LOCATION '{testdata}/csv/aggregate_test_100.csv'"
))
.await?;
let df = ctx.sql( "SELECT c1, c2 FROM aggregate_test_100
  WHERE c1 < 10").await?;
assert!(df.collect().await.is_err());

To Reproduce
Use the code above in a test.

Expected behavior
Error throw. In PostgreSQL: Query Error: error: operator does not exist: character varying < integer

Additional context
NA

[Weijun-H]

The problem is caused by comparison_coercion.
https://github.com/apache/arrow-datafusion/blob/8b92b9b6c51ae46963481fcd0b77156699f16909/datafusion/expr/src/type_coercion/binary.rs#L189
The same problem is also mentioned #3419

The specific function is here
https://github.com/apache/arrow-datafusion/blob/8b92b9b6c51ae46963481fcd0b77156699f16909/datafusion/expr/src/type_coercion/binary.rs#L202-L215