Posted: 6/Feb/2024
DynamoDB supports PartiQL to execute SQL-like select, insert, update, and delete operations.
Here is an example of how you would use PartiQL based queries for a simple URL shortener application. Notice how it uses a (generic) ExecuteStatement API to execute INSERT, SELECT, UPDATE and DELETE:
_,err:=client.ExecuteStatement(context.Background(),&dynamodb.ExecuteStatementInput{Statement:aws.String("INSERT INTO url_metadata value {'longurl':?,'shortcode':?, 'active': true}"),Parameters:[]types.AttributeValue{&types.AttributeValueMemberS{Value:"https://github.com/abhirockzz"},&types.AttributeValueMemberS{Value:uuid.New().String()[:8]},},})_,err:=client.ExecuteStatement(context.Background(),&dynamodb.ExecuteStatementInput{Statement:aws.String("SELECT * FROM url_metadata where shortcode=? AND active=true"),Parameters:[]types.AttributeValue{&types.AttributeValueMemberS{Value:"abcd1234"},},})_,err:=client.ExecuteStatement(context.Background(),&dynamodb.ExecuteStatementInput{Statement:aws.String("UPDATE url_metadata SET active=? where shortcode=?"),Parameters:[]types.AttributeValue{&types.AttributeValueMemberBOOL{Value:false},&types.AttributeValueMemberS{Value:"abcd1234"},},})_,err:=client.ExecuteStatement(context.Background(),&dynamodb.ExecuteStatementInput{Statement:aws.String("DELETE FROM url_metadata where shortcode=?"),Parameters:[]types.AttributeValue{&types.AttributeValueMemberS{Value:"abcd1234"},},})Recommended reading:
- Amazon DynamoDB documentation on PartiQL support
- ExecuteStatement API docs