Um exemplo simples de uso do Snowpark Scala¶
O exemplo a seguir imprime a contagem e os nomes das tabelas no banco de dados atual. Substitua os <placeholders>
por valores que você usa para se conectar ao Snowflake.
import com.snowflake.snowpark._
import com.snowflake.snowpark.functions._
object Main {
def main(args: Array[String]) {
// Create a Session, specifying the properties used to
// connect to the Snowflake database.
val builder = Session.builder.configs(Map(
"URL" -> "https://<account_identifier>.snowflakecomputing.com",
"USER" -> "<username>",
"PASSWORD" -> "<password>",
"ROLE" -> "<role_name_with_access_to_public_schema>",
"WAREHOUSE" -> "<warehouse_name>",
"DB" -> "<database_name>",
"SCHEMA" -> "<schema_name>"
))
val session = builder.create
// Get the number of tables in the PUBLIC schema.
var dfTables = session.table("INFORMATION_SCHEMA.TABLES").filter(col("TABLE_SCHEMA") === "PUBLIC")
var tableCount = dfTables.count()
var currentDb = session.getCurrentDatabase.getOrElse("<no current database>")
println(s"Number of tables in the PUBLIC schema in the $currentDb database: $tableCount")
// Get the list of table names in the PUBLIC schema.
var dfPublicSchemaTables = dfTables.select(col("TABLE_NAME"))
dfPublicSchemaTables.show()
}
}
Isso imprime o número de tabelas e a lista de tabelas no esquema:
Number of tables in the PUBLIC schema in the "MY_DB" database: 8
...
---------------------
|"TABLE_NAME" |
---------------------
|A_TABLE |
...