is it a good idea to join a normal table with FTS table? I want to know whether it is going to effect the original performance of the FTS table or nor? The query definitely would be using MATCH clause of course.
joining tables : one a normal one and the other FTS virtual table
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When you are joining two tables
AandB, SQLite has either to look up matching records from tableAin tableB, or to look up matching records from tableBin tableA.If there is an index on tables
AorBthat makes these lookups fast, then the join is fast. If there are indexes on both tables, SQLite chooses the one that it estimates is more efficient.So, to answer your question: a join with an FTS table will be performant if you either
MATCH, or to the FTS table'srowid, orTo check this, use
EXPLAIN QUERY PLAN.