Exception. Not retrying {:exception=>#<Java::OrgPostgresqlUtil::PSQLException: ERROR: syntax error at or near "%" - logstash

Question

I want to Add My CSV File to postgreSQL.but whenever i try to connect it Show Error:
[ERROR][logstash.outputs.jdbc
][main][a4f714a30e2d2cae8e83b3c2d215c3537fe40dca0495ca92cc2f50a93ba8088a]
JDBC - Exception. Not retrying
{:exception=>#<Java::OrgPostgresqlUtil::PSQLException: ERROR: syntax
error at or near "%"
it is My Config.conf File :
input {
file {
path => "C:/Users/Desktop/InputData12.csv"
start_position => "beginning"
codec => plain
}
}
filter {
csv {
separator => ","
columns => ["inputdata","metric","source_table","output_column_alias","method"]
}
}
output {
jdbc {
connection_string => "jdbc:postgresql://hostname:5432/database"
username => "username"
password => "password"
driver_jar_path => "C:/Users/Downloads/lib/postgresql-42.5.1.jar"
driver_class => "org.postgresql.Driver"
statement => "INSERT INTO csv_to_postgresql (inputdata,metric,source_table,output_column_alias,method) VALUES (%{inputdata},%{metric},%{source_table},%{output_column_alias},%{method})"
}
}

Answer 1

I would expect that to get a different error (JDBC - Statement has no parameters). There are two types of statement. If you set "unsafe_statement => true" then the output will sprintf the SQL statement. If you do not set that then you should be using
statement => [
"INSERT INTO csv_to_postgresql (inputdata,metric,source_table,output_column_alias,method) VALUES (?, ?, ?, ?, ?)",
"%{inputdata}",
"%{metric}",
"%{source_table}",
"%{output_column_alias}",
"%{method})"
]
in which case the output will sprintf all the parameters to the statement. Setting unsafe_statement can be more expensive than the second approach.