Improve compatibility with legacy SQLite versions#302

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JanJakes wants to merge 15 commits intodevelopfrom

on-conflict-clause-legacy-fix

Commits on Jan 9, 2026

Use PDO attribute rather than query for SQLite version
JanJakes
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Commits on Jan 12, 2026

Use different SQLite versions in CI
JanJakes
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Fix UPSERT (ON CONFLICT clause) on SQLite < 3.35.0
JanJakes
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Do not use STRICT keyword on legacy SQLite versions
JanJakes
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Use "sqlite_master" rather than "sqlite_schema" for compatibility with SQLite < 3.33.0
JanJakes
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Avoid using FLOOR function in tests due to lack of support on old SQLite
JanJakes
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Avoid using the IIF() function due to lack of support on old SQLite versions
JanJakes
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Translate SUBSTRING() to SUBSTR(); avoid SUBSTRING() due to lack of support on old SQLite versions
JanJakes
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Skip all old driver tests when running on legacy SQLite version
JanJakes
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Avoid usage of UPDATE ... FROM for compatibility with SQLite < 3.33.0
JanJakes
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Skip UPDATE ... FROM tests on SQLite < 3.33.0
JanJakes
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Emulate "columnN" naming for VALUES lists on SQLite < 3.33.0
JanJakes
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Reflect SQLite < 3.33.0 edge case behavior in tests
JanJakes
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Fix test edge case for SQLite < 3.33.0
JanJakes
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Reflect non-strict mode differences in tests for SQLite < 3.37.0
JanJakes
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