99 lines
2.7 KiB
SQL
99 lines
2.7 KiB
SQL
# name: test/sql/pivot/test_unpivot_stmt.test
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# description: Test unpivot of the stack-overflow example - https://stackoverflow.com/questions/72922418/create-rows-from-part-of-column-names/72939299
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# group: [pivot]
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statement ok
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PRAGMA enable_verification
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statement ok
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CREATE TABLE t1(id BIGINT, "Sales (05/19/2020)" BIGINT, "Sales (06/03/2020)" BIGINT, "Sales (10/23/2020)" BIGINT);
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statement ok
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INSERT INTO t1 VALUES(10629465, 23, 47, 99);
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statement ok
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INSERT INTO t1 VALUES(98765432, 10, 99, 33);
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# SQL standard syntax
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query III
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SELECT id, regexp_replace(date, 'Sales [(]([0-9]+)/([0-9]+)/([0-9]+)[)]', '\3-\1-\2')::DATE AS date, sales
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FROM t1
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UNPIVOT (sales FOR date IN ("Sales (05/19/2020)", "Sales (06/03/2020)", "Sales (10/23/2020)"))
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ORDER BY ALL;
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----
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10629465 2020-05-19 23
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10629465 2020-06-03 47
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10629465 2020-10-23 99
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98765432 2020-05-19 10
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98765432 2020-06-03 99
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98765432 2020-10-23 33
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# base unpivot statement
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query III
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SELECT id, regexp_replace(date, 'Sales [(]([0-9]+)/([0-9]+)/([0-9]+)[)]', '\3-\1-\2')::DATE AS date, sales
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FROM
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(UNPIVOT t1 ON "Sales (05/19/2020)", "Sales (06/03/2020)", "Sales (10/23/2020)" INTO NAME date VALUE sales)
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ORDER BY ALL;
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----
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10629465 2020-05-19 23
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10629465 2020-06-03 47
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10629465 2020-10-23 99
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98765432 2020-05-19 10
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98765432 2020-06-03 99
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98765432 2020-10-23 33
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# alias
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query III
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SELECT *
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FROM
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(UNPIVOT t1 ON "Sales (05/19/2020)" AS "2020-05-19", "Sales (06/03/2020)" AS "2020-06-03", "Sales (10/23/2020)" AS "2020-10-23" INTO NAME date VALUE sales)
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ORDER BY ALL;
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----
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10629465 2020-05-19 23
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10629465 2020-06-03 47
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10629465 2020-10-23 99
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98765432 2020-05-19 10
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98765432 2020-06-03 99
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98765432 2020-10-23 33
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# regex in UNPIVOT
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query III
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SELECT id, regexp_replace(date, 'Sales [(]([0-9]+)/([0-9]+)/([0-9]+)[)]', '\3-\1-\2')::DATE AS date, sales FROM t1
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UNPIVOT (Sales FOR Date IN (COLUMNS('Sales.*')))
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ORDER BY ALL;
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----
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10629465 2020-05-19 23
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10629465 2020-06-03 47
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10629465 2020-10-23 99
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98765432 2020-05-19 10
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98765432 2020-06-03 99
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98765432 2020-10-23 33
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# UNPIVOT statement
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query III
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SELECT id, regexp_replace(date, 'Sales [(]([0-9]+)/([0-9]+)/([0-9]+)[)]', '\3-\1-\2')::DATE AS date, sales
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FROM
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(UNPIVOT t1 ON COLUMNS('Sales.*') INTO NAME date VALUE sales)
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ORDER BY ALL;
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----
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10629465 2020-05-19 23
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10629465 2020-06-03 47
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10629465 2020-10-23 99
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98765432 2020-05-19 10
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98765432 2020-06-03 99
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98765432 2020-10-23 33
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# exclude clause
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query III
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SELECT id, regexp_replace(date, 'Sales [(]([0-9]+)/([0-9]+)/([0-9]+)[)]', '\3-\1-\2')::DATE AS date, sales
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FROM
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(UNPIVOT t1 ON * EXCLUDE (id) INTO NAME date VALUE sales)
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ORDER BY ALL;
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----
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10629465 2020-05-19 23
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10629465 2020-06-03 47
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10629465 2020-10-23 99
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98765432 2020-05-19 10
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98765432 2020-06-03 99
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98765432 2020-10-23 33
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