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Iterating a cursor or calling fetchone() in a loop is 100x+ slower than fetchall() (affects SQLAlchemy) (#981) #3481

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Iterating a cursor or calling fetchone() in a loop is 100x+ slower than fetchall() (affects SQLAlchemy) (#981)

Iterating a cursor or calling fetchone() in a loop is 100x+ slower than fetchall() (affects SQLAlchemy) (#981) #3481

Run time

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Job Run time
check-linting (3.12)
22s
check-linting (3.13)
18s
Unit Tests + Kernel (Python 3.11)
2m 51s
check-types (3.12)
1m 17s
check-linting (3.14)
22s
Unit Tests + PyArrow (Python 3.11, default deps)
2m 42s
check-types (3.14)
1m 18s
check-linting (3.11)
22s
Unit Tests + Kernel (Python 3.13)
2m 56s
Unit Tests (Python 3.14, min deps)
2m 13s
Unit Tests + PyArrow (Python 3.10, default deps)
2m 50s
Unit Tests + Kernel (Python 3.14)
2m 58s
Unit Tests + PyArrow (Python 3.11, min deps)
2m 37s
check-types (3.10)
21s
check-linting (3.10)
22s
Unit Tests + PyArrow (Python 3.14, min deps)
2m 49s
Unit Tests + PyArrow (Python 3.12, default deps)
2m 42s
Unit Tests + Kernel (Python 3.10)
2m 47s
Unit Tests + PyArrow (Python 3.10, min deps)
2m 57s
Unit Tests + Kernel (Python 3.12)
2m 48s
check-types (3.13)
1m 17s
Unit Tests + PyArrow (Python 3.14, default deps)
2m 57s
check-types (3.11)
1m 17s
Unit Tests (Python 3.12, default deps)
2m 12s
Unit Tests (Python 3.11, default deps)
2m 10s
Unit Tests (Python 3.10, min deps)
2m 7s
Unit Tests (Python 3.11, min deps)
2m 6s
Unit Tests (Python 3.10, default deps)
2m 7s
Unit Tests (Python 3.13, default deps)
2m 11s
Unit Tests (Python 3.14, default deps)
2m 15s
Unit Tests + PyArrow (Python 3.13, default deps)
2m 57s
1h 1m 28s