alamb commented on code in PR #18831:
URL: https://github.com/apache/datafusion/pull/18831#discussion_r2554113075
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datafusion/sql/tests/cases/plan_to_sql.rs:
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@@ -334,9 +334,7 @@ fn roundtrip_statement_with_dialect_1() -> Result<(),
DataFusionError> {
sql: "select min(ta.j1_id) as j1_min from j1 ta order by min(ta.j1_id)
limit 10;",
parser_dialect: MySqlDialect {},
unparser_dialect: UnparserMySqlDialect {},
- // top projection sort gets derived into a subquery
- // for MySQL, this subquery needs an alias
- expected: @"SELECT `j1_min` FROM (SELECT min(`ta`.`j1_id`) AS
`j1_min`, min(`ta`.`j1_id`) FROM `j1` AS `ta` ORDER BY min(`ta`.`j1_id`) ASC)
AS `derived_sort` LIMIT 10",
+ expected: @"SELECT min(`ta`.`j1_id`) AS `j1_min` FROM `j1` AS `ta`
ORDER BY `j1_min` ASC LIMIT 10",
Review Comment:
the comment implies that the subquery was required for mysql - are we sure
this change is ok?
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