20 lines
431 B
SQL
20 lines
431 B
SQL
CREATE TABLE map_integer(id INT, name);
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INSERT INTO map_integer VALUES(1,'a');
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CREATE TABLE map_text(id TEXT, name);
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INSERT INTO map_text VALUES('4','e');
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CREATE TABLE data(id TEXT, name);
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INSERT INTO data VALUES(1,'abc');
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INSERT INTO data VALUES('4','xyz');
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CREATE VIEW idmap AS
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SELECT * FROM map_integer
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UNION
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SELECT * FROM map_text;
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SELECT * FROM data
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JOIN idmap USING(id);
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ALTER TABLE map_text
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RENAME COLUMN name TO name2; |