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50 lines
1.4 KiB
SQL
50 lines
1.4 KiB
SQL
DROP TABLE IF EXISTS cool_table;
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CREATE TABLE IF NOT EXISTS cool_table
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(
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id UInt64,
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n Nested(n UInt64, lc1 LowCardinality(String))
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)
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ENGINE = MergeTree
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ORDER BY id;
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INSERT INTO cool_table SELECT number, range(number), range(number) FROM numbers(10);
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ALTER TABLE cool_table ADD COLUMN IF NOT EXISTS `n.lc2` Array(LowCardinality(String));
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SELECT n.lc1, n.lc2 FROM cool_table ORDER BY id;
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DROP TABLE IF EXISTS cool_table;
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CREATE TABLE IF NOT EXISTS cool_table
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(
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id UInt64,
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n Nested(n UInt64, lc1 Array(LowCardinality(String)))
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)
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ENGINE = MergeTree
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ORDER BY id;
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INSERT INTO cool_table SELECT number, range(number), arrayMap(x -> range(x % 4), range(number)) FROM numbers(10);
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ALTER TABLE cool_table ADD COLUMN IF NOT EXISTS `n.lc2` Array(Array(LowCardinality(String)));
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SELECT n.lc1, n.lc2 FROM cool_table ORDER BY id;
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DROP TABLE IF EXISTS cool_table;
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CREATE TABLE IF NOT EXISTS cool_table
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(
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id UInt64,
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n Nested(n UInt64, lc1 Map(LowCardinality(String), UInt64))
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)
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ENGINE = MergeTree
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ORDER BY id;
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INSERT INTO cool_table SELECT number, range(number), arrayMap(x -> (arrayMap(y -> 'k' || toString(y), range(x % 4)), range(x % 4))::Map(LowCardinality(String), UInt64), range(number)) FROM numbers(10);
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ALTER TABLE cool_table ADD COLUMN IF NOT EXISTS `n.lc2` Array(Map(LowCardinality(String), UInt64));
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SELECT n.lc1, n.lc2 FROM cool_table ORDER BY id;
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DROP TABLE IF EXISTS cool_table;
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