forked from PacktWorkshops/The-Go-Workshop
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
33 changed files
with
244 additions
and
169 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,77 +1,88 @@ | ||
| package main | ||
|
|
||
| import "fmt" | ||
| import "database/sql" | ||
| import _ "github.com/lib/pq" | ||
| import "math/big" | ||
| import ( | ||
| "database/sql" | ||
| "fmt" | ||
| "math/big" | ||
|
|
||
| func main(){ | ||
| var number int64 | ||
| var prop string | ||
| var primeSum int64 | ||
| var newNumber int64 | ||
| _ "github.com/lib/pq" | ||
| ) | ||
|
|
||
| db, err := sql.Open("postgres", "user=postgres password=Start!123 host=127.0.0.1 port=5432 dbname=postgres sslmode=disable") | ||
| if err != nil { | ||
| panic(err) | ||
| }else{ | ||
| fmt.Println("The connection to the DB was successfully initialized!") | ||
| } | ||
| func main() { | ||
| var number int64 | ||
| var prop string | ||
| var primeSum int64 | ||
| var newNumber int64 | ||
|
|
||
| AllTheNumbers := "SELECT * FROM Number" | ||
| Numbers, err := db.Prepare(AllTheNumbers) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| db, err := sql.Open("postgres", "user=postgres password=Start!123 host=127.0.0.1 port=5432 dbname=postgres sslmode=disable") | ||
| if err != nil { | ||
| panic(err) | ||
| } else { | ||
| fmt.Println("The connection to the DB was successfully initialized!") | ||
| } | ||
|
|
||
| primeSum = 0 | ||
| result, err := Numbers.Query() | ||
| fmt.Println("The list of prime numbers:") | ||
| for result.Next(){ | ||
| err = result.Scan(&number, &prop) | ||
| if err != nil{ | ||
| panic(err) | ||
| } | ||
| if big.NewInt(number).ProbablyPrime(0) { | ||
| primeSum += number | ||
| fmt.Print(" ",number) | ||
| } | ||
|
|
||
| AllTheNumbers := "SELECT * FROM Number" | ||
| Numbers, err := db.Prepare(AllTheNumbers) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
|
|
||
| Numbers.Close() | ||
| fmt.Println("\nThe total sum of prime numbers in this range is:",primeSum) | ||
| primeSum = 0 | ||
| result, err := Numbers.Query() | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| fmt.Println("The list of prime numbers:") | ||
| for result.Next() { | ||
| err = result.Scan(&number, &prop) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| if big.NewInt(number).ProbablyPrime(0) { | ||
| primeSum += number | ||
| fmt.Print(" ", number) | ||
| } | ||
|
|
||
| } | ||
|
|
||
| Remove := "DELETE FROM Number WHERE Property=$1" | ||
| removeResult, err := db.Exec(Remove,"Even") | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| ModifiedRecords, err := removeResult.RowsAffected() | ||
| fmt.Println("The number of rows removed:",ModifiedRecords) | ||
| fmt.Println("Updating numbers...") | ||
| Numbers.Close() | ||
| fmt.Println("\nThe total sum of prime numbers in this range is:", primeSum) | ||
|
|
||
| Update := "UPDATE Number SET Number=$1 WHERE Number=$2 AND Property=$3" | ||
| AllTheNumbers = "SELECT * FROM Number" | ||
| Numbers, err = db.Prepare(AllTheNumbers) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| result, err = Numbers.Query() | ||
| for result.Next(){ | ||
| err = result.Scan(&number, &prop) | ||
| if err != nil{ | ||
| panic(err) | ||
| } | ||
| Remove := "DELETE FROM Number WHERE Property=$1" | ||
| removeResult, err := db.Exec(Remove, "Even") | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| ModifiedRecords, err := removeResult.RowsAffected() | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| fmt.Println("The number of rows removed:", ModifiedRecords) | ||
| fmt.Println("Updating numbers...") | ||
|
|
||
| Update := "UPDATE Number SET Number=$1 WHERE Number=$2 AND Property=$3" | ||
| AllTheNumbers = "SELECT * FROM Number" | ||
| Numbers, err = db.Prepare(AllTheNumbers) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| result, err = Numbers.Query() | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| for result.Next() { | ||
| err = result.Scan(&number, &prop) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| newNumber = number + primeSum | ||
| _, err = db.Exec(Update,newNumber,number,prop) | ||
| _, err = db.Exec(Update, newNumber, number, prop) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| } | ||
| } | ||
| Numbers.Close() | ||
| fmt.Println("The execution is now complete...") | ||
| db.Close() | ||
| Numbers.Close() | ||
| fmt.Println("The execution is now complete...") | ||
| db.Close() | ||
|
|
||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.