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cte.txt
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cte.txt
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================================================================================
One cte
================================================================================
WITH my_cte AS (
SELECT one, two
FROM my_table
)
SELECT *
FROM my_cte;
--------------------------------------------------------------------------------
(program
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(statement
(select
(keyword_select)
(select_expression
(term
value: (field
name: (identifier)))
(term
value: (field
name: (identifier)))))
(from
(keyword_from)
(relation
(object_reference
name: (identifier))))))
(select
(keyword_select)
(select_expression
(term
value: (all_fields))))
(from
(keyword_from)
(relation
(object_reference
name: (identifier))))))
================================================================================
Multiple ctes with returning
================================================================================
WITH first AS (
INSERT INTO my_table (one, two)
VALUES (1, 2)
RETURNING *
), second AS (
SELECT one, two
FROM my_table
)
SELECT *
FROM second;
--------------------------------------------------------------------------------
(program
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(statement
(insert
(keyword_insert)
(keyword_into)
(object_reference
name: (identifier))
(list
(column
(identifier))
(column
(identifier)))
(keyword_values)
(list
(literal)
(literal)))
(returning
(keyword_returning)
(select_expression
(term
value: (all_fields))))))
(cte
(identifier)
(keyword_as)
(statement
(select
(keyword_select)
(select_expression
(term
value: (field
name: (identifier)))
(term
value: (field
name: (identifier)))))
(from
(keyword_from)
(relation
(object_reference
name: (identifier))))))
(select
(keyword_select)
(select_expression
(term
value: (all_fields))))
(from
(keyword_from)
(relation
(object_reference
name: (identifier))))))
================================================================================
CTE with materializations
================================================================================
WITH first AS NOT MATERIALIZED (
SELECT a FROM b
), second AS MATERIALIZED (
SELECT one, two
FROM my_table
)
SELECT *
FROM second;
--------------------------------------------------------------------------------
(program
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(keyword_not)
(keyword_materialized)
(statement
(select
(keyword_select)
(select_expression
(term
(field
(identifier)))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
(cte
(identifier)
(keyword_as)
(keyword_materialized)
(statement
(select
(keyword_select)
(select_expression
(term
(field
(identifier)))
(term
(field
(identifier)))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
================================================================================
Parenthesized CTE
================================================================================
(
WITH data AS (
SELECT 1 AS col
)
SELECT *
FROM data
)
--------------------------------------------------------------------------------
(program
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(statement
(select
(keyword_select)
(select_expression
(term
(literal)
(keyword_as)
(identifier))))))
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
================================================================================
Nested CTE
================================================================================
WITH top_cte AS (
WITH nested_cte AS (
SELECT 1 as one, 2 as two
)
SELECT one, two
FROM nested_cte
)
SELECT *
FROM top_cte;
--------------------------------------------------------------------------------
(program
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(statement
(select
(keyword_select)
(select_expression
(term
(literal)
(keyword_as)
(identifier))
(term
(literal)
(keyword_as)
(identifier))))))
(select
(keyword_select)
(select_expression
(term
(field
(identifier)))
(term
(field
(identifier)))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
================================================================================
Nested deeper
================================================================================
WITH top_cte AS (
WITH nested_cte AS (
WITH nested_further AS (
SELECT 1 as one, 2 as two
)
SELECT * FROM nested_further
)
SELECT one, two
FROM nested_cte
)
SELECT *
FROM top_cte;
--------------------------------------------------------------------------------
(program
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(statement
(select
(keyword_select)
(select_expression
(term
(literal)
(keyword_as)
(identifier))
(term
(literal)
(keyword_as)
(identifier))))))
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
(select
(keyword_select)
(select_expression
(term
(field
(identifier)))
(term
(field
(identifier)))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
================================================================================
CTE with parenthesized unions
================================================================================
with tb2 as (
SELECT * FROM tb1
)
(
(SELECT * FROM tb2)
UNION
(SELECT * FROM tb2)
)
--------------------------------------------------------------------------------
(program
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(statement
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
(set_operation
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))
(keyword_union)
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier)))))))
================================================================================
CTE with unions
================================================================================
with tb2 as (
SELECT * FROM tb1
)
(SELECT * FROM tb2)
UNION
(SELECT * FROM tb2)
--------------------------------------------------------------------------------
(program
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(statement
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
(set_operation
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))
(keyword_union)
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier)))))))
================================================================================
Parenthesis around CTE
================================================================================
(
with x as (select * from ints)
)
(select * from x);
--------------------------------------------------------------------------------
(program
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(statement
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
================================================================================
Parenthesis around everything
================================================================================
(
(with x as (select * from ints))
(select * from x)
);
--------------------------------------------------------------------------------
(program
(statement
(keyword_with)
(cte
(identifier)
(keyword_as)
(statement
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
(select
(keyword_select)
(select_expression
(term
(all_fields))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))
================================================================================
Recursive CTE
================================================================================
WITH RECURSIVE included_parts(sub_part, part, quantity) AS (
SELECT sub_part, part, quantity FROM parts WHERE part = 'our_product'
UNION ALL
SELECT p.sub_part, p.part, p.quantity * pr.quantity
FROM included_parts pr, parts p
WHERE p.part = pr.sub_part
)
SELECT sub_part, SUM(quantity) as total_quantity
FROM included_parts
--------------------------------------------------------------------------------
(program
(statement
(keyword_with)
(keyword_recursive)
(cte
(identifier)
(identifier)
(identifier)
(identifier)
(keyword_as)
(statement
(set_operation
(select
(keyword_select)
(select_expression
(term
(field
(identifier)))
(term
(field
(identifier)))
(term
(field
(identifier)))))
(from
(keyword_from)
(relation
(object_reference
(identifier)))
(where
(keyword_where)
(binary_expression
(field
(identifier))
(literal))))
(keyword_union)
(keyword_all)
(select
(keyword_select)
(select_expression
(term
(field
(object_reference
(identifier))
(identifier)))
(term
(field
(object_reference
(identifier))
(identifier)))
(term
(binary_expression
(field
(object_reference
(identifier))
(identifier))
(field
(object_reference
(identifier))
(identifier))))))
(from
(keyword_from)
(relation
(object_reference
(identifier))
(identifier))
(relation
(object_reference
(identifier))
(identifier))
(where
(keyword_where)
(binary_expression
(field
(object_reference
(identifier))
(identifier))
(field
(object_reference
(identifier))
(identifier))))))))
(select
(keyword_select)
(select_expression
(term
(field
(identifier)))
(term
(invocation
(object_reference
(identifier))
(term
(field
(identifier))))
(keyword_as)
(identifier))))
(from
(keyword_from)
(relation
(object_reference
(identifier))))))