[docs] add merge code example to delta docs#5845
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anandbraman merged 2 commits intomainfrom Mar 17, 2026
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ryzhyk
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Thanks! Please create an issue to add a test for this in either the main repo or the QA repo.
Update docs.feldera.com/docs/connectors/sinks/delta.md Co-authored-by: Leonid Ryzhyk <ryzhyk@gmail.com> Signed-off-by: Anand Raman <49171658+anandbraman@users.noreply.github.com> Update docs.feldera.com/docs/connectors/sinks/delta.md Co-authored-by: Leonid Ryzhyk <ryzhyk@gmail.com> Signed-off-by: Anand Raman <49171658+anandbraman@users.noreply.github.com> Update docs.feldera.com/docs/connectors/sinks/delta.md Co-authored-by: Leonid Ryzhyk <ryzhyk@gmail.com> Signed-off-by: Anand Raman <49171658+anandbraman@users.noreply.github.com>
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mythical-fred
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Mar 17, 2026
| FROM {source_table} | ||
| -- Only consider new updates since the last merge. | ||
| WHERE __feldera_ts >= ( | ||
| SELECT COALESCE(MAX(__feldera_ts), 0) |
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The subquery reads from {target_table} inside the USING clause, which is the same table being merged into. This self-reference is legal in Delta Lake but can behave differently across Spark versions — worth a note in the surrounding prose so readers know to validate against their environment.
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Describe Manual Test Plan
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