From 4a3d453d0d2785a8269857e186feec6c7f4f07dd Mon Sep 17 00:00:00 2001
From: Struchkov Mark <mark@struchkov.dev>
Date: Fri, 4 Nov 2022 19:03:02 +0300
Subject: [PATCH] sql_examples.sql

---
 sql_examples.sql | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 sql_examples.sql

diff --git a/sql_examples.sql b/sql_examples.sql
new file mode 100644
index 0000000..2a713e1
--- /dev/null
+++ b/sql_examples.sql
@@ -0,0 +1,34 @@
+EXPLAIN ANALYSE
+SELECT *
+FROM post
+ORDER BY create_on
+    FETCH FIRST 50 ROWS ONLY;
+
+EXPLAIN ANALYSE
+SELECT *
+FROM post
+ORDER BY create_on
+OFFSET 50 ROWS FETCH NEXT 50 ROWS ONLY;
+
+EXPLAIN ANALYSE
+SELECT *
+FROM post
+ORDER BY create_on
+OFFSET 9950 ROWS FETCH NEXT 50 ROWS ONLY;
+
+CREATE INDEX idx_post_created_on ON post (create_on DESC);
+
+CREATE INDEX idx_post_created_on ON post (create_on DESC, id DESC);
+
+EXPLAIN ANALYSE
+SELECT *
+FROM post
+ORDER BY create_on DESC, id DESC
+    FETCH FIRST 50 ROWS ONLY;
+
+EXPLAIN ANALYSE
+SELECT *
+FROM post
+WHERE (create_on, id) < ('2022-10-30 00:11:43.224314', '8766d496-44c7-4e48-af29-b19178692cd9')
+ORDER BY create_on DESC
+    FETCH FIRST 50 ROWS ONLY
\ No newline at end of file