PostgreSQL NUMERIC vs DOUBLE PRECISION: Which Should You Use?
August 11, 2026 · Ghazi · PostgreSQL Data Types
Choose between PostgreSQL NUMERIC, DOUBLE PRECISION, and REAL based on exactness, range, storage, rounding, and query behavior.
Security, AI tools, connection setup, query tuning, vector search, data modeling, migrations, and practical Mac workflows.
Connect a Mac client without guessing at hosts, poolers, tunnels, or TLS settings.
Fix PostgreSQL connection refused errors on macOS by checking the server, port, socket, installation, logs, and client connection fields in order.
Choose the right PostgreSQL sslmode and understand what disable, prefer, require, verify-ca, and verify-full actually protect.
Connect PostgresGUI to a local Postgres.app server using the correct host, port, user, database, and blank default password.
Fix malformed PostgreSQL URLs, encoded passwords, wrong database names, IPv6 hosts, SSL parameters, and pooler-port mistakes.
Connect PostgresGUI to a Supabase database using the direct or session-pooler URL, with the right host, port, SSL setting, and IPv4 fallback.
Connect PostgresGUI to Neon with the generated PostgreSQL URL, SSL and channel binding, and the correct choice between direct and pooled endpoints.
Create a local SSH tunnel to a private PostgreSQL server, connect from psql or PostgresGUI, and diagnose port, bastion, and host-key failures.
Verify an Amazon RDS for PostgreSQL certificate and hostname on macOS using the current AWS CA bundle, sslrootcert, and sslmode=verify-full.
August 11, 2026 · Ghazi · PostgreSQL Data Types
Choose between PostgreSQL NUMERIC, DOUBLE PRECISION, and REAL based on exactness, range, storage, rounding, and query behavior.
August 11, 2026 · Ghazi · PostgreSQL Data Types
Choose PostgreSQL SMALLINT, INTEGER, or BIGINT using their exact ranges, storage costs, overflow behavior, and expected ID growth.
August 4, 2026 · Ghazi · PostgreSQL Security
Diagnose PostgreSQL permission denied errors across schemas, tables, sequences, and future objects without granting unnecessary access.
August 4, 2026 · Ghazi · Backup and Recovery
Create a PostgreSQL custom-format backup on Mac, inspect it, restore it into a clean database, and verify that the recovered data works.
August 4, 2026 · Ghazi · PostgreSQL Performance
Find blocked PostgreSQL sessions, identify the blocking transaction, inspect its SQL, and decide whether to wait, cancel, or terminate it.
August 4, 2026 · Ghazi · Query Performance
Choose a PostgreSQL index type from the query operators and data shape, then verify the result with EXPLAIN instead of guessing.
August 4, 2026 · Ghazi · PostgreSQL Data
Import a CSV file into PostgreSQL, choose between server-side COPY and client-side psql \copy, handle nulls and headers, and validate the loaded rows.
August 4, 2026 · Ghazi · PostgreSQL Performance
Inspect dead rows and vacuum history, understand autovacuum thresholds, and fix table growth without jumping straight to VACUUM FULL.
July 31, 2026 · Ghazi · AI and PostgreSQL
Connect Claude, Codex, or Cursor to PostgreSQL through an MCP server without giving an AI agent write access to production data.
July 31, 2026 · Ghazi · PostgreSQL Releases
A practical look at PostgreSQL 19 Beta 2, including safer Mac testing, compatibility checks, new SQL, monitoring, and performance changes.
July 31, 2026 · Ghazi · Supabase
Copy and test Supabase row-level security policies for user-owned rows, team membership, inserts, updates, and administrative access.
July 31, 2026 · Ghazi · Vector Search
Build hybrid search in PostgreSQL by combining full-text ranking, pgvector similarity, filters, and reciprocal-rank fusion.
July 31, 2026 · Ghazi · Query Performance
Use pg_stat_statements to find expensive PostgreSQL query patterns by total time, average time, calls, rows, and buffer activity.
July 31, 2026 · Ghazi · PostgreSQL Connections
Choose between direct PostgreSQL connections, session pooling, and transaction pooling without breaking prepared statements or session state.
July 31, 2026 · Ghazi · PostgreSQL 18
See when PostgreSQL 18 can use a multicolumn B-tree index without an equality condition on its leading column, and when another index is still better.
July 31, 2026 · Ghazi · Vector Search
Compare pgvector HNSW and IVFFlat with a repeatable test for build time, query latency, recall, memory pressure, filtering, and ongoing writes.
July 31, 2026 · Ghazi · PostgreSQL Security
Diagnose slow PostgreSQL row-level security policies by checking indexes, function calls, joins, initialization plans, and policy scope.
July 31, 2026 · Ghazi · PostgreSQL 18
Use PostgreSQL 18 temporal keys and PERIOD foreign keys to prevent overlapping bookings and require complete time-range coverage.
July 31, 2026 · Ghazi · PostgreSQL Operations
Prepare for PostgreSQL 14 end of life with an inventory, extension checks, rehearsed pg_upgrade or dump-and-restore, validation, and rollback plan.
July 31, 2026 · Ghazi · PostgreSQL 18
Choose between virtual and stored generated columns in PostgreSQL 18 by comparing storage, read cost, indexing, expressions, and replication.
July 31, 2026 · Ghazi · PostgreSQL Security
Understand PostgreSQL OAuth support across the server, libpq, psql, flow plugins, validators, and database GUI clients.
July 31, 2026 · Ghazi · AI and PostgreSQL
Give AI coding agents useful PostgreSQL access with separate roles, read-only transactions, query limits, auditability, and disposable environments.
July 30, 2026 · Ghazi · Performance
Read PostgreSQL EXPLAIN ANALYZE output by comparing estimated and actual rows, loops, scan types, join nodes, buffers, planning time, and execution time.
July 28, 2026 · Ghazi · Tools
Postgres.app runs a local PostgreSQL server on Mac. PostgresGUI connects to PostgreSQL so you can browse tables, run SQL, edit rows, and export results.
July 25, 2026 · Ghazi · Database Design
Compare UUIDv4 and UUIDv7 in PostgreSQL, including B-tree insertion order, PostgreSQL 18's uuidv7() function, migration choices, and when random IDs still make sense.
July 25, 2026 · Ghazi · Reference
Copy useful PostgreSQL JSONB queries for extraction, containment, key checks, arrays, updates, jsonpath, and GIN indexes, with notes on when a normal column is better.
July 25, 2026 · Ghazi · Tools
Compare psql and PostgreSQL GUI clients for scripts, remote access, table browsing, query plans, production checks, and everyday Mac development.
July 19, 2026 · Ghazi · Tutorial
Install psql on Mac with Homebrew, Postgres.app, or the PostgreSQL installer. Includes PATH fixes, connection examples, and common error checks.
July 19, 2026 · Ghazi · Tutorial
A practical guide to downloading PostgreSQL for Mac, installing psql, choosing Postgres.app or Homebrew, and adding a native GUI client.
July 19, 2026 · Ghazi · Reference
Choose the right Postgres column types for text, numbers, dates, JSON, UUIDs, arrays, booleans, and generated identity columns.
July 19, 2026 · Ghazi · Tools
Compare SQL editors and IDEs for PostgreSQL on Mac, from focused native clients to DataGrip, DBeaver, TablePlus, pgAdmin, and VS Code.
July 19, 2026 · Ghazi · Design
Design a database schema online, plan tables and relationships, generate SQL, and avoid common schema design mistakes before writing application code.
March 3, 2026 · Ghazi · Pricing
PostgresGUI is a native Mac Postgres client for $22.99 - one time. No subscription, no telemetry, fully open source. See how it compares to TablePlus, Postico, and DataGrip.
February 26, 2026 · Ghazi · Tools
Tired of pgAdmin on Mac? Discover the best pgAdmin alternatives that are native, fast, and actually enjoyable to use. Compare PostgresGUI, Postico, TablePlus, DBeaver, and more.
February 4, 2026 · Ghazi · Migration
Migrate MySQL to PostgreSQL with pgloader, map incompatible types, validate rows and sequences, test the application, and plan a controlled cutover.
February 4, 2026 · Ghazi · Migration
A practical guide to migrating from Microsoft SQL Server to PostgreSQL. Covers key differences, syntax changes, data type mapping, migration tools, and common pitfalls.
February 4, 2026 · Ghazi · Tools
Compare six PostgreSQL GUI clients for Mac by database scope, native experience, source availability, administration depth, and everyday workflow.
February 4, 2026 · Ghazi · Operations
Compare the best PostgreSQL monitoring tools in 2026. From built-in statistics views and pg_stat_statements to Prometheus, Datadog, and pgwatch2, find the right monitoring stack for your Postgres database.
February 4, 2026 · Ghazi · Operations
Compare pg_dump, pg_basebackup, pgBackRest, Barman, WAL-G, and managed backups by portability, PITR, storage, recovery goals, and operational tradeoffs.
February 4, 2025 · Ghazi · Hosting
Compare managed PostgreSQL hosting by use case, recovery, networking, operational model, and tradeoffs across Neon, Supabase, AWS, GCP, Azure, Aiven, DigitalOcean, Railway, and Render.
January 15, 2025 · Ghazi · Product
Welcome to the PostgresGUI blog! This is our first post introducing our blog and sharing updates about our lightweight PostgreSQL client for Mac.