spark_cursor()

Read(3178) Label: query, spark database, cursor,

Description:

Query a Spark database, and return the result as a cursor.

Syntax:

spark_cursor(con,sql)

Note:

This external library function (See External Library Guide) executes a SQL query on a Spark database and returns the result as a cursor. The parameter con is database connection.

Parameter:

con

Database connection string

sql

A SQL query statement, like select * from table

Return value:

Cursor

Example:

 

A

 

1

=Spark_open("hdfs://192.168.0.8:9000","thrift://192.168.0.8:9083","aa")

Connect to the spark database.

2

=spark_cursor(A1,"select * from tablename")

 

3

=spark_close(A1)

 

Related function:

spark_close()

spark_open()

spark_query()