You
My pattern swallows the whole line.
ChatGPT
.* is greedy: it takes everything, then backtracks. Use .*? for the shortest match, or better, a negated class like [^"]* which cannot cross the delimiter at all and does not backtrack.
Tool steps: 3 (reasoning summary, call to python, execution output)
reasoning summary
Checked the query plan, then compared index options.
call to python
rows = run_sql("EXPLAIN (ANALYZE) SELECT ...")
print(rows[:3])execution output
Seq Scan on events (cost=0.00..812431.00 rows=41203122 width=16)
Rows Removed by Filter: 38996878
Planning Time: 0.214 ms
Execution Time: 11842.663 msYou
How long does this usually take in practice?
ChatGPT
An afternoon to do it properly the first time, then minutes when it recurs. Most of the first afternoon goes into discovering which of the defaults do not match your situation.