18 lines
377 B
SQL
18 lines
377 B
SQL
CREATE TABLE OPERATION
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(
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ID SERIAL PRIMARY KEY
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, Redo TEXT NOT NULL
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, Undo TEXT NOT NULL
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, Parent INTEGER REFERENCES OPERATION(ID)
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, Redo_Child INTEGER REFERENCES OPERATION(ID)
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);
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INSERT INTO OPERATION (ID, Redo, Undo) VALUES (0, '', '');
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CREATE TABLE CURRENT_OPERATION
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(
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ID INTEGER PRIMARY KEY REFERENCES OPERATION(ID)
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);
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INSERT INTO CURRENT_OPERATION (ID) VALUES (0);
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