21 lines
594 B
MySQL
21 lines
594 B
MySQL
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BEGIN;
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ALTER TABLE languages DROP COLUMN english_name;
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ALTER TABLE languages DROP COLUMN self_name;
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CREATE TABLE language_names (
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-- name type constraints
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id BIGSERIAL PRIMARY KEY,
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lang_id BIGINT NOT NULL REFERENCES languages (id),
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name_lang_id BIGINT NOT NULL REFERENCES languages (id),
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value VARCHAR NOT NULL,
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-- CONSTRAINT name CHECK (condition)
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CONSTRAINT value_is_sane_text CHECK (is_sane_text(value))
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);
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CREATE UNIQUE INDEX languages_lang_name_lang
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ON language_names (lang_id, name_lang_id);
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COMMIT;
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