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101 lines
2.6 KiB
Plaintext
101 lines
2.6 KiB
Plaintext
DROP DATABASE IF EXISTS mcol_5394 ;
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CREATE DATABASE mcol_5394 ;
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USE mcol_5394 ;
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CREATE TABLE t1 (a int, k int, b VARCHAR(10)) engine=columnstore;
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INSERT INTO t1 VALUES
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(1, 1, "alfa"),
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(1, 2, null),
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(2, 3, "doi"),
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(1, 4, "unu"),
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(3, 5, "trei"),
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(4, 6, null),
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(4, 7, null),
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(1, 8, "one");
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SELECT a, JSON_ARRAYAGG(b) FROM t1 GROUP BY a;
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a JSON_ARRAYAGG(b)
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1 ["alfa",null,"unu","one"]
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2 ["doi"]
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3 ["trei"]
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4 [null,null]
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SELECT JSON_ARRAYAGG(b) FROM t1;
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JSON_ARRAYAGG(b)
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["alfa",null,"doi","unu","trei",null,null,"one"]
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PREPARE p1 FROM "SELECT a, JSON_ARRAYAGG(b) FROM t1 GROUP BY a";
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EXECUTE p1;
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a JSON_ARRAYAGG(b)
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1 ["alfa",null,"unu","one"]
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2 ["doi"]
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3 ["trei"]
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4 [null,null]
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EXECUTE p1;
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a JSON_ARRAYAGG(b)
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1 ["alfa",null,"unu","one"]
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2 ["doi"]
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3 ["trei"]
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4 [null,null]
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deallocate prepare p1;
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PREPARE p3 FROM
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"SELECT SQL_BUFFER_RESULT a, JSON_ARRAYAGG(b) FROM t1 GROUP BY a";
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EXECUTE p3;
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a JSON_ARRAYAGG(b)
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1 ["alfa",null,"unu","one"]
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2 ["doi"]
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3 ["trei"]
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4 [null,null]
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EXECUTE p3;
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a JSON_ARRAYAGG(b)
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1 ["alfa",null,"unu","one"]
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2 ["doi"]
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3 ["trei"]
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4 [null,null]
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deallocate prepare p3;
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PREPARE p4 FROM "SELECT JSON_ARRAYAGG(b) FROM t1";
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EXECUTE p4;
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JSON_ARRAYAGG(b)
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["alfa",null,"doi","unu","trei",null,null,"one"]
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EXECUTE p4;
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JSON_ARRAYAGG(b)
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["alfa",null,"doi","unu","trei",null,null,"one"]
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deallocate prepare p4;
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SELECT JSON_MERGE_PRESERVE(JSON_ARRAYAGG(b), '[true, false]') FROM t1;
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JSON_MERGE_PRESERVE(JSON_ARRAYAGG(b), '[true, false]')
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["alfa", null, "doi", "unu", "trei", null, null, "one", true, false]
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PREPARE p1 FROM
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"SELECT a, JSON_MERGE_PRESERVE(JSON_ARRAYAGG(b), '[true, false]') FROM t1 GROUP BY a";
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EXECUTE p1;
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a JSON_MERGE_PRESERVE(JSON_ARRAYAGG(b), '[true, false]')
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1 ["alfa", null, "unu", "one", true, false]
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2 ["doi", true, false]
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3 ["trei", true, false]
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4 [null, null, true, false]
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EXECUTE p1;
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a JSON_MERGE_PRESERVE(JSON_ARRAYAGG(b), '[true, false]')
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1 ["alfa", null, "unu", "one", true, false]
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2 ["doi", true, false]
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3 ["trei", true, false]
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4 [null, null, true, false]
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deallocate prepare p1;
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PREPARE p4 FROM
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"SELECT JSON_MERGE_PRESERVE(JSON_ARRAYAGG(b), '[true, false]') FROM t1";
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EXECUTE p4;
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JSON_MERGE_PRESERVE(JSON_ARRAYAGG(b), '[true, false]')
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["alfa", null, "doi", "unu", "trei", null, null, "one", true, false]
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EXECUTE p4;
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JSON_MERGE_PRESERVE(JSON_ARRAYAGG(b), '[true, false]')
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["alfa", null, "doi", "unu", "trei", null, null, "one", true, false]
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deallocate prepare p4;
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SELECT a, JSON_ARRAYAGG(b) as jarray
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FROM t1
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GROUP BY a
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HAVING jarray= JSON_ARRAY("trei");
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a jarray
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3 ["trei"]
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TRUNCATE TABLE t1;
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SELECT a, JSON_ARRAYAGG(b) FROM t1 GROUP BY a;
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a JSON_ARRAYAGG(b)
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SELECT JSON_ARRAYAGG(b) FROM t1;
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JSON_ARRAYAGG(b)
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NULL
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DROP TABLE t1;
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DROP DATABASE mcol_5394;
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