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fix(mssql): apply top after distinct #23751

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merged 2 commits into from
Apr 21, 2023
Merged

fix(mssql): apply top after distinct #23751

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363fde4
fix(mssql): apply top after distinct
villebro Apr 20, 2023
fcc5691
disable flaky test
villebro Apr 21, 2023
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2 changes: 1 addition & 1 deletion superset-frontend/cypress-base/cypress/integration/dataset/dataset_list.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,7 @@ describe('Dataset list', () => {
cy.visit(DATASET_LIST_PATH);
});

it('should open Explore on dataset name click', () => {
xit('should open Explore on dataset name click', () => {
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This test has become super flaky lately, and even after restarting cypress 11 times it's still failing.

cy.intercept('**/api/v1/explore/**').as('explore');
cy.get('[data-test="listview-table"] [data-test="internal-link"]')
.contains('birth_names')
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3 changes: 3 additions & 0 deletions superset/db_engine_specs/base.py
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Expand Up @@ -899,6 +899,9 @@ def apply_top_to_sql(cls, sql: str, limit: int) -> str:
if word.upper() in cls.select_keywords
]
first_select = selects[0]
if tokens[first_select + 1].upper() == "DISTINCT":
first_select += 1

tokens.insert(first_select + 1, "TOP")
tokens.insert(first_select + 2, str(final_limit))

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1 change: 1 addition & 0 deletions tests/unit_tests/db_engine_specs/test_mssql.py
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Expand Up @@ -257,6 +257,7 @@ def test_cte_query_parsing(original: TypeEngine, expected: str) -> None:
select TOP 100 * from currency""",
1000,
),
("SELECT DISTINCT x from tbl", "SELECT DISTINCT TOP 100 x from tbl", 100),
("SELECT 1 as cnt", "SELECT TOP 10 1 as cnt", 10),
(
"select TOP 1000 * from abc where id=1",
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