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Advanced Techniques in Go Programming

Solution 3: Go Packages and Functions

Explore how to develop and manage Go packages and functions by implementing database utilities using the pgx and MySQL packages. Understand connection handling, querying, and result processing to build robust database applications in Go.

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Solution 1

Here’s the rewritten code for getSchema.go that works with the jackc/pgx package:

DROP DATABASE IF EXISTS go;
CREATE DATABASE go;

DROP TABLE IF EXISTS Users;
DROP TABLE IF EXISTS Userdata;

\c go;

CREATE TABLE Users (
    ID SERIAL,
    Username VARCHAR(100) PRIMARY KEY
);

CREATE TABLE Userdata (
    UserID Int NOT NULL,
    Name VARCHAR(100),
    Surname VARCHAR(100),
    Description VARCHAR(200)
);
getSchema.go

Code explanation

  • Line 8: First, we will import the pgx package.

  • Lines 32–46: Next, we use pgx to parse the connection string and open a connection to the database. This code is similar to the sql.Open call in the original code. We create a connection string from the arguments, parse it using pgx.ParseConnectionString, and then open a connection to the database ...