creates new DDL schema
This commit is contained in:
Oleg Silkin
parent
cdfd62a1c0
commit
a6b1c44fee
2 changed files with 34 additions and 122 deletions
34
comments_ddl.sql
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34
comments_ddl.sql
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-- ATTACH DATABASE 'comments.db' AS Comments;
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PRAGMA FOREIGN_KEYS = ON;
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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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Timestamp INTEGER DEFAULT NULL,
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CONSTRAINT CHANNEL_PK PRIMARY KEY (ClaimId)
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ON CONFLICT IGNORE,
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CONSTRAINT CHANNEL_NAME_LEN
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CHECK ( 0 < length(Name) AND length(Name) <= 120)
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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 INTEGER NOT NULL,
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LbryClaimId TEXT NOT NULL,
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ChannelId TEXT NOT NULL,
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Body TEXT NOT NULL,
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ParentId INTEGER DEFAULT NULL,
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Timestamp DATETIME,
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CONSTRAINT COMMENT_ID_PK PRIMARY KEY (CommentId)
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ON CONFLICT ABORT,
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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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CONSTRAINT COMMENT_BODY_LEN CHECK(1 < length(Body) AND length(Body) <= 2000)
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);
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122
scripts.sql
122
scripts.sql
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ATTACH DATABASE 'comments.db' AS Comments;
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PRAGMA FOREIGN_KEYS = ON;
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SELECT * FROM CLAIM WHERE LbryClaimId LIKE '1ed866252f80e48f2496acec72a69a5ad85497AC';
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SELECT * FROM CLAIM;
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DROP TABLE CLAIM;
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CREATE TABLE IF NOT EXISTS CLAIM (
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ClaimIndex INTEGER NOT NULL,
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LbryClaimId TEXT NOT NULL,
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Time_added INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),
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CONSTRAINT CLAIM_PK PRIMARY KEY (ClaimIndex)
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ON CONFLICT ROLLBACK,
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CONSTRAINT LBRY_CLAIMID_CK UNIQUE (LbryClaimId)
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ON CONFLICT IGNORE,
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CONSTRAINT LBRY_CLAIM_ID CHECK (length(LbryClaimId) = 40)
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);
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INSERT INTO CLAIM(LbryClaimId)
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VALUES ('1ed866252f80e48f2496acec72a69a5ad85497ac'),
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('3128b0f0e9b4b18e33fc8e2a586a66da40f617c4'),
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('ce09230acc7b0037ddc9a1ac01f03baab8a23b1b');
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-- ('0c37b593d4d7e9a00e1bd69f305d0241eac3f4ad');
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SELECT * FROM COMMENT;
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DROP TABLE COMMENT;
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CREATE TABLE IF NOT EXISTS COMMENT (
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CommentId INTEGER NOT NULL PRIMARY KEY ,
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ClaimIndex INTEGER NOT NULL,
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ChannelName TEXT NOT NULL,
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ParentId INTEGER DEFAULT NULL,
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Timestamp INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),
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Comment TEXT NOT NULL,
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CONSTRAINT COMMENT_CLAIM_FK
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FOREIGN KEY (ClaimIndex) REFERENCES CLAIM(ClaimIndex)
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ON UPDATE CASCADE ON DELETE CASCADE,
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CONSTRAINT COMMENT_PARENT_FK
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FOREIGN KEY (ParentId) REFERENCES COMMENT(CommentId)
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ON UPDATE CASCADE ON DELETE SET NULL,
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CONSTRAINT COMMENT_LEN CHECK(1 < length(Comment) AND length(Comment) <= 2000),
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CONSTRAINT CHANNEL_NAME_LEN CHECK ( 0 < length(ChannelName) AND length(ChannelName) <= 120),
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CONSTRAINT COMMENT_SK UNIQUE (ChannelName, Comment, ParentId)
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ON CONFLICT IGNORE
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);
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INSERT INTO COMMENT(ClaimIndex, ChannelName, ParentId, Comment)
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SELECT 2 , 'Flatness Flatness LA', 1, 'sick bike tricks'
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FROM CLAIM AS C
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WHERE C.ClaimIndex = ClaimIndex AND EXISTS (
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SELECT * FROM Comments.COMMENT AS P
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WHERE P.CommentId = P.ParentId
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);
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-- first three should fail
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INSERT INTO CLAIM(LbryClaimId)
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VALUES ('1ed866252f80e48f2496acec72a69a5ad85497ac'),
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('3128b0f0e9b4b18e33fc8e2a586a66da40f617c4'),
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('ce09230acc7b0037ddc9a1ac01f03baab8a23b1b'),
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('0c37b593d4d7e9a00e1bd69f305d0241eac3f4ad');
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-- gets the top level comments for a given claim id
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SELECT * FROM COMMENT AS C, CLAIM AS D
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WHERE C.ParentId IS NULL
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AND C.ClaimIndex = D.ClaimIndex
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AND D.LbryClaimId LIKE 'some shit here';
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SELECT SQLITE_VERSION();
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SELECT * FROM CLAIM;
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INSERT INTO COMMENT(ClaimIndex, ChannelName, Comment)
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SELECT
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C.ClaimIndex, 'doge loard', 'nice ass'
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FROM CLAIM AS C WHERE C.LbryClaimId = '1ed866252f80e48f2496acec72a69a5ad85497ac';
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SELECT C.ChannelId, C.Comment, C.Timestamp, D.LbryClaimId, D.Time_added
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FROM COMMENT AS C NATURAL JOIN CLAIM AS D;
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INSERT INTO backups(creation_time, totalcomments, totalclaims, size_kb)
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VALUES (]] .. time .. ", " .. com_count .. ", " .. claim_count ..
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SELECT last_insert_rowid();
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SELECT _rowid_ FROM CLAIM UNION ALL
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SELECT _rowid_ FROM COMMENT;
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INSERT INTO claims (lbry_perm_uri, Time_added) VALUES ('" ..
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accouts:escape(claim_uri) .. "', " .. get_unix_time() .. ");"
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"UPDATE claims SET upvotes = " .. votes ..
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" WHERE lbry_perm_uri = '" .. data.lbry_perm_uri .. "';"
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"UPDATE claims SET downvotes = " .. votes ..
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" WHERE lbry_perm_uri = '" .. data.lbry_perm_uri .. "';"
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"SELECT lbry_perm_uri FROM claims WHERE ClaimId = " ..
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"SELECT * FROM comments WHERE parent_com IS NULL AND ClaimId = " ..
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"INSERT INTO comments (ClaimId, poster_name, post_time," ..
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" message) VALUES (" .. ClaimId .. ", '" .. poster_name ..
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"', " .. post_time .. ", '" .. message .. "');"
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INSERT INTO comments (ClaimId, poster_name, " ..
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"parent_com, post_time, message) VALUES (" .. ClaimId ..
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", '" .. poster_name .. "', " .. parent_id .. ", " ..
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post_time .. ", '" .. message .. "');"
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"SELECT * FROM comments WHERE CommentId = '" .. comment_id .. "';"
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"SELECT * FROM comments WHERE parent_com = '" .. comment_id .. "';"
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UPDATE comments SET upvotes = " .. votes ..
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" WHERE CommentId = '" .. comment_id .. "';"
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UPDATE comments SET downvotes = " .. votes ..
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" WHERE CommentId = '" .. comment_id .. "';"
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