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creates new DDL schema

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This commit is contained in:
Oleg Silkin 2019-05-15 23:32:55 -04:00
parent cdfd62a1c0
commit a6b1c44fee
2 changed files with 34 additions and 122 deletions
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34
comments_ddl.sql Normal file
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@ -0,0 +1,34 @@
-- ATTACH DATABASE 'comments.db' AS Comments;
PRAGMA FOREIGN_KEYS = ON;
DROP TABLE IF EXISTS CHANNEL;
CREATE TABLE IF NOT EXISTS CHANNEL(
ClaimId TEXT NOT NULL,
Name TEXT NOT NULL,
Timestamp INTEGER DEFAULT NULL,
CONSTRAINT CHANNEL_PK PRIMARY KEY (ClaimId)
ON CONFLICT IGNORE,
CONSTRAINT CHANNEL_NAME_LEN
CHECK ( 0 < length(Name) AND length(Name) <= 120)
);
DROP TABLE IF EXISTS COMMENT;
CREATE TABLE IF NOT EXISTS COMMENT (
CommentId INTEGER NOT NULL,
LbryClaimId TEXT NOT NULL,
ChannelId TEXT NOT NULL,
Body TEXT NOT NULL,
ParentId INTEGER DEFAULT NULL,
Timestamp DATETIME,
CONSTRAINT COMMENT_ID_PK PRIMARY KEY (CommentId)
ON CONFLICT ABORT,
CONSTRAINT COMMENT_PARENT_FK FOREIGN KEY (ParentId) REFERENCES COMMENT(CommentId)
ON UPDATE CASCADE ON DELETE NO ACTION, -- setting null implies comment is top level
CONSTRAINT COMMENT_BODY_LEN CHECK(1 < length(Body) AND length(Body) <= 2000)
);

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