Use pgx

postgres/conn.go

@@ -1,10 +1,12 @@
 package postgres
 
 import (
+	"context"
 	"database/sql"
 	"embed"
 	"fmt"
 
+	"github.com/jackc/pgx/v4"
 	_ "github.com/jackc/pgx/v4/stdlib"
 	"github.com/pressly/goose/v3"
 )
@@ -25,5 +27,15 @@ func Connect(server string, user string, password string, database string) (*Que
 		return nil, err
 	}
 
-	return New(conn), nil
+	err = conn.Close()
+	if err != nil {
+		return nil, err
+	}
+
+	connPG, err := pgx.Connect(context.Background(), connString)
+	if err != nil {
+		return nil, err
+	}
+
+	return New(connPG), nil
 }

postgres/db.go

@@ -4,14 +4,15 @@ package postgres
 
 import (
 	"context"
-	"database/sql"
+
+	"github.com/jackc/pgconn"
+	"github.com/jackc/pgx/v4"
 )
 
 type DBTX interface {
-	ExecContext(context.Context, string, ...interface{}) (sql.Result, error)
-	PrepareContext(context.Context, string) (*sql.Stmt, error)
-	QueryContext(context.Context, string, ...interface{}) (*sql.Rows, error)
-	QueryRowContext(context.Context, string, ...interface{}) *sql.Row
+	Exec(context.Context, string, ...interface{}) (pgconn.CommandTag, error)
+	Query(context.Context, string, ...interface{}) (pgx.Rows, error)
+	QueryRow(context.Context, string, ...interface{}) pgx.Row
 }
 
 func New(db DBTX) *Queries {
@@ -22,7 +23,7 @@ type Queries struct {
 	db DBTX
 }
 
-func (q *Queries) WithTx(tx *sql.Tx) *Queries {
+func (q *Queries) WithTx(tx pgx.Tx) *Queries {
 	return &Queries{
 		db: tx,
 	}

postgres/models.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"github.com/google/uuid"
+	"github.com/jackc/pgtype"
 )
 
 type Account struct {
@@ -30,8 +31,8 @@ type Payee struct {
 type Transaction struct {
 	ID        uuid.UUID
 	Date      time.Time
-	Memo      sql.NullString
-	Amount    string
+	Memo      string
+	Amount    pgtype.Numeric
 	AccountID uuid.UUID
 	PayeeID   uuid.NullUUID
 }

postgres/schema/202112021109_initial.sql

@@ -37,7 +37,7 @@ CREATE TABLE payees (
 CREATE TABLE transactions (
     id uuid DEFAULT uuid_generate_v4() PRIMARY KEY,
     date date NOT NULL,
-    memo text NULL,
+    memo text NOT NULL,
     amount decimal(12,2) NOT NULL,
     account_id uuid NOT NULL,
     payee_id uuid

sqlc.yaml

@@ -5,4 +5,4 @@ packages:
     engine: "postgresql"
     schema: "postgres/schema/"
     queries: "postgres/queries/"
-    #sql_package: "pgx/v4"
+    sql_package: "pgx/v4"