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(merge: 239befa 6945ba7)

author	drh <>
	Thu, 16 Feb 2023 14:29:04 +0000 (14:29 +0000)
committer	drh <>
	Thu, 16 Feb 2023 14:29:04 +0000 (14:29 +0000)
commit	8b6f313f252b7b01fc7f57c1eb2c55cfc5b38613
tree	e0380d7fd486ab49cd9b69d363d2f4306cee76d5	tree \| snapshot
parent	239befa5fc840287cb00d791f24c8a024375d033	commit \| diff
parent	6945ba787f11eb165ec9f25c359b4c91993643a5	commit \| diff

Do not compute result columns of subqueries that are never used. Make those columns NULL instead. This optimization potentially resolves the enhancement request described by [baa5bb76c35a124c|ticket baa5bb76c35a124c].

FossilOrigin-Name: 0163b697dd560b6ad78ae20b3ae495a051680b0faf1633827119db381869351f

manifest	diff1 \|	diff2 \|	blob \| history
manifest.uuid	diff1 \|	diff2 \|	blob \| history
src/select.c	diff1 \|	diff2 \|	blob \| history

Mirror of https://github.com/sqlite/sqlite.git