15 lines
340 B
SQL
15 lines
340 B
SQL
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-- Your SQL goes here
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alter table kecheng_repeat
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drop column kecheng_root_id;
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alter table kecheng
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add parent_id varchar not null;
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comment on column kecheng.parent_id is '第一条数据的`parent_id`是自己。';
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alter table kecheng
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add constraint kecheng_kecheng_id_fk
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foreign key (parent_id) references kecheng;
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