59 lines
No EOL
2.2 KiB
SQL
59 lines
No EOL
2.2 KiB
SQL
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PRAGMA FOREIGN_KEYS = ON;
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-- tables
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-- DROP TABLE IF EXISTS COMMENT;
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-- DROP TABLE IF EXISTS CHANNEL;
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CREATE TABLE IF NOT EXISTS CHANNEL(
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ClaimId TEXT NOT NULL,
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Name TEXT NOT NULL,
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CONSTRAINT CHANNEL_PK PRIMARY KEY (ClaimId)
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ON CONFLICT IGNORE
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);
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DROP TABLE IF EXISTS COMMENT;
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CREATE TABLE IF NOT EXISTS COMMENT (
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CommentId TEXT NOT NULL,
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LbryClaimId TEXT NOT NULL,
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ChannelId TEXT DEFAULT NULL,
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Body TEXT NOT NULL,
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ParentId TEXT DEFAULT NULL,
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Signature TEXT DEFAULT NULL,
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Timestamp INTEGER NOT NULL,
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CONSTRAINT COMMENT_PRIMARY_KEY PRIMARY KEY (CommentId) ON CONFLICT IGNORE,
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CONSTRAINT COMMENT_SIGNATURE_SK UNIQUE (Signature) ON CONFLICT ABORT,
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CONSTRAINT COMMENT_CHANNEL_FK FOREIGN KEY (ChannelId) REFERENCES CHANNEL(ClaimId)
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ON DELETE NO ACTION ON UPDATE NO ACTION,
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CONSTRAINT COMMENT_PARENT_FK FOREIGN KEY (ParentId) REFERENCES COMMENT(CommentId)
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ON UPDATE CASCADE ON DELETE NO ACTION -- setting null implies comment is top level
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);
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-- indexes
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DROP INDEX IF EXISTS COMMENT_CLAIM_INDEX;
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CREATE INDEX COMMENT_CLAIM_INDEX ON COMMENT (LbryClaimId);
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-- VIEWS
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DROP VIEW IF EXISTS COMMENTS_ON_CLAIMS;
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CREATE VIEW COMMENTS_ON_CLAIMS (comment_id, claim_id, timestamp, channel_name, channel_id, channel_uri, comment, parent_id) AS
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SELECT C.CommentId, C.LbryClaimId, C.Timestamp, CHAN.Name, CHAN.ClaimId, 'lbry://' || CHAN.Name || '#' || CHAN.ClaimId, C.Body, C.ParentId
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FROM CHANNEL AS CHAN
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INNER JOIN COMMENT C on CHAN.ClaimId = C.ChannelId
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ORDER BY C.Timestamp;
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DROP VIEW IF EXISTS COMMENT_REPLIES;
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CREATE VIEW COMMENT_REPLIES (Author, CommentBody, ParentAuthor, ParentCommentBody) AS
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SELECT AUTHOR.Name, OG.Body, PCHAN.Name, PARENT.Body FROM COMMENT AS OG
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JOIN COMMENT AS PARENT
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ON OG.ParentId = PARENT.CommentId
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JOIN CHANNEL AS PCHAN ON PARENT.ChannelId = PCHAN.ClaimId
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JOIN CHANNEL AS AUTHOR ON OG.ChannelId = AUTHOR.ClaimId
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ORDER BY OG.Timestamp;
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-- this is the default channel for anyone who wants to publish anonymously
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INSERT INTO CHANNEL
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VALUES ('9cb713f01bf247a0e03170b5ed00d5161340c486', '@Anonymous'); |