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Merge pull request #2917 from lbryio/faster-repost-search-query

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improve how claim search query handles reposts
This commit is contained in:
Lex Berezhny 2020-04-17 12:53:50 -04:00 committed by GitHub
commit 58640c1521
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 26 additions and 10 deletions
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36
lbry/wallet/server/db/reader.py
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@ -545,11 +545,19 @@ def _apply_constraints_for_array_attributes(constraints, attr, cleaner, for_coun
f':$any_{attr}{i}' for i in range(len(any_items))
)
if for_count or attr == 'tag':
any_queries[f'#_any_{attr}'] = f"""
{CLAIM_HASH_OR_REPOST_HASH_SQL} IN (
SELECT claim_hash FROM {attr} WHERE {attr} IN ({values})
)
"""
if attr == 'tag':
any_queries[f'#_any_{attr}'] = f"""
(claim.claim_type != {CLAIM_TYPES['repost']}
AND claim.claim_hash IN (SELECT claim_hash FROM tag WHERE tag IN ({values}))) OR
(claim.claim_type == {CLAIM_TYPES['repost']} AND
claim.reposted_claim_hash IN (SELECT claim_hash FROM tag WHERE tag IN ({values})))
"""
else:
any_queries[f'#_any_{attr}'] = f"""
{CLAIM_HASH_OR_REPOST_HASH_SQL} IN (
SELECT claim_hash FROM {attr} WHERE {attr} IN ({values})
)
"""
else:
any_queries[f'#_any_{attr}'] = f"""
EXISTS(
@ -596,11 +604,19 @@ def _apply_constraints_for_array_attributes(constraints, attr, cleaner, for_coun
f':$not_{attr}{i}' for i in range(len(not_items))
)
if for_count:
constraints[f'#_not_{attr}'] = f"""
{CLAIM_HASH_OR_REPOST_HASH_SQL} NOT IN (
SELECT claim_hash FROM {attr} WHERE {attr} IN ({values})
)
"""
if attr == 'tag':
constraints[f'#_not_{attr}'] = f"""
(claim.claim_type != {CLAIM_TYPES['repost']}
AND claim.claim_hash NOT IN (SELECT claim_hash FROM tag WHERE tag IN ({values}))) AND
(claim.claim_type == {CLAIM_TYPES['repost']} AND
claim.reposted_claim_hash NOT IN (SELECT claim_hash FROM tag WHERE tag IN ({values})))
"""
else:
constraints[f'#_not_{attr}'] = f"""
{CLAIM_HASH_OR_REPOST_HASH_SQL} NOT IN (
SELECT claim_hash FROM {attr} WHERE {attr} IN ({values})
)
"""
else:
constraints[f'#_not_{attr}'] = f"""
NOT EXISTS(