m

db/sql/postgres/docs/conference.txt

@@ -0,0 +1,3 @@
+2024
+MicrosoftDeveloper - POSETTE of p42
+    https://www.youtube.com/playlist?list=PLlrxD0HtieHg5ldHlEn3nMMpClX0RUntH

db/sql/postgres/docs/courses/courses.txt

@@ -10,6 +10,9 @@ PostgreSQL for Everybody Specialization
     https://tutsnode.net/postgresql-for-everybody-specialization/
     magnet:?xt=urn:btih:315d0ae0cbb895c3bd1ffb8eec64d9ed973cc2a0
     ! 4.87g, good, tons of misc other
+2021
+Amigoscode - SQL For Beginners Tutorial 0:00 of 4:22:52
+    https://www.youtube.com/watch?v=5hzZtqCNQKk
 2016
 Administer PG 9.4
     https://www.youtube.com/playlist?list=PLaFqU3KCWw6KzGwUubZm-9-vKsi6vh5qC

db/sql/postgres/feature/internals/docs/presentations.txt

@@ -5,3 +5,5 @@ BetweenBraces - PG 16 Internals of p5
     https://www.youtube.com/playlist?list=PLlghaO_0b1OepxMpMZAIoI3dHgozIEyLp
 pgpro stuff
     https://www.youtube.com/playlist?list=PLlghaO_0b1OepxMpMZAIoI3dHgozIEyLp
+MicrosoftDevelopers - Dombrovskaya - Tuning Parameters in Postgres vs. Tuning Your Queries of 17:34
+    https://www.youtube.com/watch?v=phR2hKwgs8E

db/sql/postgres/feature/internals/storage/storage.txt

@@ -1,6 +1,10 @@
 https://www.postgresql.org/docs/current/storage.html
 https://www.postgresql.org/docs/current/storage-page-layout.html
 
+2024
+LvivJavaClub - 310 - PostgreSQL store by Oleksandr Belinskyi 0:00 of 53:24
+    https://www.youtube.com/watch?v=YmRu7AGyoqw
+
 each table consists from multiple layers
 each file is no more than 1 Gb
 

db/sql/postgres/feature/performance/explain/presentations.txt

@@ -1,5 +1,5 @@
 2023
-Tenzor - Backend School p4 - Query Analysis p2 10:00 of 1:40:59
+Tenzor - Backend School p4 - Query Analysis p2 20:00 of 1:40:59
     https://www.youtube.com/watch?v=Rg7AAEso3z0
     ! 5:00  - Custom Scan (<impl-method-name>)
     !         Recheck Cond - ???

db/sql/postgres/feature/performance/planner/planner.txt

@@ -1,2 +1,7 @@
 https://www.postgresql.org/docs/current/runtime-config-query.html
 https://www.postgresql.org/docs/current/runtime-config-query.html#GUC-JOIN-COLLAPSE-LIMIT
+
+2023
+floy: Introduction to Postgres Query Planning 0:00 of 57:02
+    https://www.youtube.com/watch?v=k9AAkbII3Pg
+    https://leftshift.github.io/query-planner-talk/

db/sql/postgres/feature/performance/planner/statistics.txt

@@ -4,6 +4,20 @@ https://www.postgresql.org/docs/current/sql-createstatistics.html
 https://www.postgresql.org/docs/current/planner-stats.html
 https://www.postgresql.org/docs/current/multivariate-statistics-examples.html
 
+2023
+Otus - Anton Zolotov - Statistics usage for Query Optimization 1:00:00 of 1:55:27
+    https://www.youtube.com/watch?v=yNAbEtnFikI
+    ! 14:00 - create table ... with(autovacuum_enabled=false);
+    ! 19:00 - select reltuples, relpages from pg_class where relname='<our-table>';
+    !         -1 0
+    ! 26:00 - pg_statistics/pg_stats view
+    !         null_frac, n_distinct   -- negative/positive values - are real-num/fraction
+    ! 28:00 - while analyze, table is checked not fully (default_statistics_target (100) * 300 = 300 000 is statistically good number of rows)
+    !         clustered idx - data is ordered
+    !         correlation - data is ordered asc, 0 - not orered, -1 - desc
+    !         most_common_vals - array (of 100)
+    !         most_common_freqs - array as well (of 100)
+
 CREATE EXTENSION pgstattuple;
 SELECT * FROM pgstattuple('table-name') \gx
 -[ RECORD 1 ]------+--------

db/sql/postgres/feature/type/jsonb/ext/norm-dombrovskaya.txt

@@ -0,0 +1,5 @@
+https://github.com/hettie-d/NORM
+
+2024
+ScyllaDB - Dombrovskaya - P99 CONF 2023 | ORM is Bad, But is There an Alternative of 20:42
+    https://www.youtube.com/watch?v=O0jL1YCek7U

db/sql/postgres/feature/type/jsonb/ext/pg_jsonschema.txt

@@ -0,0 +1,5 @@
+pg_jsonschema
+
+2024
+MicrosoftDeveloper - Even JSONB In Postgres Needs Schemas of 23:18
+    https://www.youtube.com/watch?v=F6X60ln2VNc

pl/java/libfws/spring/features/scheduling/schedlock.txt

@@ -30,3 +30,9 @@ public class ShedLockConfig {
                 .build());
     }
 }
+
+spring/shedlock-spring/src/main/java/net/javacrumbs/shedlock/spring/aop/SpringLockConfigurationExtractor.java
+
+    private final Converter<String, Duration> durationConverter;
+
+    Duration result = durationConverter.convert(stringValueFromAnnotation);