|
552 | 552 | </para> |
553 | 553 | </listitem> |
554 | 554 |
|
| 555 | + <listitem> |
| 556 | + <!-- |
| 557 | + Author: Alvaro Herrera <alvherre@alvh.no-ip.org> |
| 558 | + 2017-04-06 [7e534adcd] Fix BRIN cost estimation |
| 559 | + --> |
| 560 | + <para> |
| 561 | + Improve accuracy in determining if a <acronym>BRIN</> index scan |
| 562 | + is beneficial (David Rowley, Emre Hasegeli) |
| 563 | + </para> |
| 564 | + </listitem> |
| 565 | + |
555 | 566 | <listitem> |
556 | 567 | <!-- |
557 | 568 | Author: Tom Lane <tgl@sss.pgh.pa.us> |
|
707 | 718 | 2017-04-05 [2686ee1b7] Collect and use multi-column dependency stats |
708 | 719 | --> |
709 | 720 | <para> |
710 | | - Add the ability to compute a correlation ratio and the number of |
711 | | - distinct values on several columns (Tomas Vondra, David Rowley) |
| 721 | + Add multi-column optimizer statistics to compute the correlation |
| 722 | + ratio and number of distinct values (Tomas Vondra, David Rowley, |
| 723 | + Álvaro Herrera) |
712 | 724 | </para> |
713 | 725 |
|
714 | 726 | <para> |
|
1755 | 1767 | <!-- |
1756 | 1768 | Author: Fujii Masao <fujii@postgresql.org> |
1757 | 1769 | 2017-03-25 [70adf2fbe] Make VACUUM VERBOSE report the number of skipped frozen |
| 1770 | + Author: Simon Riggs <simon@2ndQuadrant.com> |
| 1771 | + 2017-03-03 [9eb344faf] Allow vacuums to report oldestxmin |
1758 | 1772 | --> |
1759 | 1773 | <para> |
1760 | | - Have <link linkend="SQL-VACUUM"><command>VACUUM VERBOSE</></> |
1761 | | -reportthe number of skipped frozen pages (Masahiko Sawada) |
| 1774 | + Have <link linkend="SQL-VACUUM"><command>VACUUM VERBOSE</></> report |
| 1775 | + the number of skipped frozen pages and oldest xmin (Masahiko Sawada) |
1762 | 1776 | </para> |
1763 | 1777 |
|
1764 | 1778 | <para> |
|