refactor: improve menu descriptions for clarity and consistency

- Spell out abbreviations: DB → database, FKs → Foreign keys, tmp → temporary
- Update terminology: master/replica → primary/replica (modern Postgres terminology)
- Fix inconsistencies: user name → username, do & undo → do and undo
- Remove redundant prefix in v2 description

Author: NikolayS

sql/0_node.sql

@@ -1,4 +1,4 @@
---Node & current DB information: master/replica, lag, DB size, tmp files, etc.
+--Node and current database information: primary/replica, lag, database size, temporary files, etc.
 
 /*
 For Postgres versions older than 10, run this first:

sql/a1_activity.sql

@@ -1,4 +1,4 @@
---Current activity: count of current connections grouped by database, user name, state
+--Current activity: count of current connections grouped by database, username, state
 select
   coalesce(usename, '** ALL users **') as "User",
   coalesce(datname, '** ALL databases **') as "DB",

sql/e1_extensions.sql

@@ -1,4 +1,4 @@
---Extensions installed in current DB
+--Extensions installed in current database
 
 select
   ae.name,

sql/i3_non_indexed_fks.sql

@@ -1,4 +1,4 @@
---FKs with missing/bad indexes
+--Foreign keys with missing or bad indexes
 
 --Created by PostgreSQL Experts https://github.com/pgexperts/pgx_scripts/blob/master/indexes/fk_no_index.sql
 

sql/i5_indexes_migration.sql

@@ -1,4 +1,4 @@
---Cleanup unused and redundant indexes – do & undo migration DDL
+--Cleanup unused and redundant indexes – do and undo migration DDL
 
 -- Use it to generate a database migration (e.g. RoR's db:migrate or Sqitch)
 -- to drop unused and redundant indexes.

sql/v2_autovacuum_progress_and_queue.sql

@@ -1,4 +1,4 @@
---Vacuum: vacuum progress and autovacuum queue
+--Vacuum progress and autovacuum queue
 
 -- Based on: https://gitlab.com/snippets/1889668
 

start.psql

@@ -1,21 +1,21 @@
 \ir warmup.psql
 \echo '\033[1;35mMenu:\033[0m'
-\echo '   0 – Node & current DB information: master/replica, lag, DB size, tmp files, etc.'
+\echo '   0 – Node and current database information: primary/replica, lag, database size, temporary files, etc.'
 \echo '   1 – Databases: size, stats'
 \echo '   2 – Tables: table/index/TOAST size, number of rows'
 \echo '   3 – Load profile'
-\echo '  a1 – Current activity: count of current connections grouped by database, user name, state'
+\echo '  a1 – Current activity: count of current connections grouped by database, username, state'
 \echo '  b1 – Table bloat (estimated)'
 \echo '  b2 – B-tree index bloat (estimated)'
 \echo '  b3 – Table bloat (requires pgstattuple; expensive)'
 \echo '  b4 – B-tree indexes bloat (requires pgstattuple; expensive)'
 \echo '  b5 – Tables and columns without stats (so bloat cannot be estimated)'
-\echo '  e1 – Extensions installed in current DB'
+\echo '  e1 – Extensions installed in current database'
 \echo '  i1 – Unused and rarely used indexes'
 \echo '  i2 – Redundant indexes'
-\echo '  i3 – FKs with missing/bad indexes'
+\echo '  i3 – Foreign keys with missing or bad indexes'
 \echo '  i4 – Invalid indexes'
-\echo '  i5 – Cleanup unused and redundant indexes – do & undo migration DDL'
+\echo '  i5 – Cleanup unused and redundant indexes – do and undo migration DDL'
 \echo '  l1 – Lock trees (lightweight)'
 \echo '  l2 – Lock trees, detailed (based on pg_blocking_pids())'
 \echo '  p1 – [EXP] Alignment padding: how many bytes can be saved if columns are reordered?'
@@ -25,7 +25,7 @@
 \echo '  s2 – Slowest queries report (requires pg_stat_statements)'
 \echo '  t1 – PostgreSQL parameters tuning'
 \echo '  v1 – Vacuum: current activity'
-\echo '  v2 – Vacuum: vacuum progress and autovacuum queue'
+\echo '  v2 – Vacuum progress and autovacuum queue'
 \echo '   q – Quit'
 \echo
 \echo Type your choice and press <Enter>: