[YSQL] path->rows is set incorrectly in yb_cost_bitmap_table_scan

[timothy-e]

Jira Link: DB-14968

Description

the value of path->rows is set here then overwritten immediately after. So, the final path->rows wouldn't reflect any local filter.

furthermore, parameterized predicates are not taken into account even if it wasn't overwritten there. it's best not to recompute it once the value is set at the beginning of the function as shown below:

	/* Mark the path with the correct row estimate */
	if (param_info)
		path->rows = param_info->ppi_rows;
	else
		path->rows = baserel->rows;

Issue Type

kind/bug

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