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SQLite FTS3 and FTS4 Extensions
(fts3.html)
Appendix A: Search Application Tips
... The sub-query joins the documents table with the document_data table, so that
-- implementation of the rank function has access to the static weight assigned
-- to each document.
SELECT title, snippet(documents) FROM documents JOIN (
SELECT docid, rank(matchinfo(documents ...
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The Virtual Database Engine of SQLite
(vdbe.html)
... Joins
In a join, two or more tables are combined to generate a single
result. The result table consists of every possible combination
of rows from the tables being joined. The easiest and most natural
way to implement this is ...
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The Virtual Table Mechanism Of SQLite
(vtab.html)
2.3. The xBestIndex Method
... This information
derives mainly from the WHERE clause and ORDER BY or GROUP BY clauses
of the query, but also from any ON or USING clauses if the query is a
join. The information that the SQLite core provides to ...
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Compile-time Options
(compile.html)
4. Options To Set Default Parameter Values
... The baseline query planner limit is increased
by SQLITE_QUERY_PLANNER_LIMIT_INCR prior to processing each table of a
join so that each table is guaranteed to be able to propose at least
some index-and-constraint combinations to the optimizer even if ...
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The SQLite Bytecode Engine
(opcode.html)
4. The Opcodes
... Tables created using
by this opcode will be used for automatically created transient
indices in joins.
OpenDup
Open a new cursor P1 that points to the same ephemeral table as
cursor P2. The P2 cursor must have been opened by ...
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Pragma statements supported by SQLite
(pragma.html)
... can use aggregate functions, and the table-valued function can be just
one of several data sources in a join.
For example, to get a list of all indexed columns in a schema, one
could query:
SELECT DISTINCT m.name ...
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