wForget opened a new issue, #8448:
URL: https://github.com/apache/iceberg/issues/8448
### Feature Request / Improvement
Iceberg spark procedure argument does not support empty map or empty array.
reproduce:
```
CREATE TABLE wangzhen_test_20230901_t4 (id bigint, name string);
INSERT INTO wangzhen_test_20230901_t4 VALUES (4, 'd'),(5, 'e'),(6, 'f');
CALL iceberg_catalog.system.migrate('wangzhen_test_20230901_t4', map(),
true);
```
error msg
```
org.apache.spark.sql.catalyst.parser.extensions.IcebergParseException:
mismatched input ')' expecting {'ADD', 'ALTER', 'AS', 'ASC', 'BRANCH', 'BY',
'CALL', 'DAYS', 'DESC', 'DISTRIBUTED', 'DROP', 'EXISTS', 'FIELD', 'FIELDS',
'FIRST', 'HOURS', 'IF', 'LAST', 'LOCALLY', 'MINUTES', 'MONTHS', 'CREATE',
'NOT', 'NULLS', 'OF', 'OR', 'ORDERED', 'PARTITION', 'REPLACE', 'RETAIN',
'IDENTIFIER', 'SET', 'SNAPSHOT', 'SNAPSHOTS', 'TABLE', 'TAG', 'UNORDERED',
'VERSION', 'WITH', 'WRITE', 'TRUE', 'FALSE', 'MAP', '-', STRING,
BIGINT_LITERAL, SMALLINT_LITERAL, TINYINT_LITERAL, INTEGER_VALUE,
EXPONENT_VALUE, DECIMAL_VALUE, FLOAT_LITERAL, DOUBLE_LITERAL,
BIGDECIMAL_LITERAL, IDENTIFIER, BACKQUOTED_IDENTIFIER}
== SQL ==
CALL iceberg_catalog.system.migrate('wangzhen_test_20230901_t4', map(), true)
at
org.apache.spark.sql.catalyst.parser.extensions.IcebergParseException.withCommand(IcebergSparkSqlExtensionsParser.scala:393)
at
org.apache.spark.sql.catalyst.parser.extensions.IcebergSparkSqlExtensionsParser.parse(IcebergSparkSqlExtensionsParser.scala:252)
at
org.apache.spark.sql.catalyst.parser.extensions.IcebergSparkSqlExtensionsParser.parsePlan(IcebergSparkSqlExtensionsParser.scala:129)
at
org.apache.spark.sql.SparkSession.$anonfun$sql$2(SparkSession.scala:633)
at
org.apache.spark.sql.catalyst.QueryPlanningTracker.measurePhase(QueryPlanningTracker.scala:111)
at
org.apache.spark.sql.SparkSession.$anonfun$sql$1(SparkSession.scala:632)
at org.apache.spark.sql.SparkSession.withActive(SparkSession.scala:827)
at org.apache.spark.sql.SparkSession.sql(SparkSession.scala:630)
at org.apache.spark.sql.SparkSession.sql(SparkSession.scala:671)
```
Although we can avoid it with named arguments, like:
```
CALL iceberg_catalog.system.migrate(table => 'wangzhen_test_20230901_t4',
drop_backup => true);
```
### Query engine
Spark
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