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sqlglot/tests/fixtures/optimizer/eliminate_ctes.sql

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# title: CTE
WITH q AS (
SELECT
a
FROM x
)
SELECT
a
FROM x;
SELECT
a
FROM x;
# title: Nested CTE
SELECT
a
FROM (
WITH q AS (
SELECT
a
FROM x
)
SELECT a FROM x
);
SELECT
a
FROM (
SELECT
a
FROM x
);
# title: Chained CTE
WITH q AS (
SELECT
a
FROM x
), r AS (
SELECT
a
FROM q
)
SELECT
a
FROM x;
SELECT
a
FROM x;