m

db/sql/postgres/docs/courses/pg-pro.txt

@@ -4,8 +4,16 @@ PostgresProfessional - DBA2 Administration of 18 parts
 PostgresProfessional - RogovLuzanovTolmachyov - QPT13 - Query Optimization of p12
     https://postgrespro.ru/education/courses/QPT
     https://www.youtube.com/playlist?list=PLaFqU3KCWw6JW80WBHPOe-SMJD2NOjmge
-    p9 - Statistics 0:00 of 46:28
+    p10 - profiling 0:00 of 37:49
+        https://www.youtube.com/watch?v=o5T0ApVFcDc
+    p9 - Statistics of 46:28
         https://www.youtube.com/watch?v=I4cedjshRrs
+        ! pg_class - num of tuples/pages (reltuples/relpages) for tables
+        !   setting default_statistics_target = 100
+        !       "selection size" for table analysis
+        ! pg_stats - n_distinct, null_tract - ration of uniq vals
+        !   most_common_vals, most_common_freqs
+        ! pg_statistics_ext, pg_statistics_ext_data, pg_stats_ext view (for dependent column values)
     p8 - Merge Join of 24:26
         https://www.youtube.com/watch?v=urerHBMGc14
         ! set should be sorted first (either from downstream node of plan or from idx)

nontech/funny/monkey.txt

@@ -1,2 +1,5 @@
 big nose - proboscis
 https://www.youtube.com/watch?v=VHgahMP6ewQ
+
+on the bridge
+https://www.youtube.com/watch?v=KnmdUn3qQeI

science/ai/docs/people/ashmanov.txt

@@ -0,0 +1,5 @@
+2025
+SomethingToSay - Ashmanov - at Ortho Hymnasium of 2:16:22
+    https://www.youtube.com/watch?v=W21g-lV38b8
+Metametrics - Ashmanov Sidorenko of 1:52:36
+    https://www.youtube.com/watch?v=X3Pgv7QGuZQ

science/ai/neural-net/types/rl/dqn.txt

@@ -0,0 +1,3 @@
+2025
+Otus - DQN Algo of 1:54:46
+    https://www.youtube.com/watch?v=cAF8onLRHn4

science/algo/interview/tools/interviewcoder.txt

@@ -0,0 +1 @@
+https://www.interviewcoder.co/