mirror of
https://github.com/apache/impala.git
synced 2025-12-26 14:02:53 -05:00
e50bfa8376
Decimal type is a primitive data type for Impala. Current code returns wrong values for columns with decimal data type in external JDBC tables. This patch fixes wrong values returned from JDBC data source, and supports pushing down decimal type of predicates to remote database and remote Impala. The decimal precision and scale of the columns in external JDBC table must be no less than the decimal precision and scale of the corresponding columns in the table of remote database. Otherwise, Impala fails with an error since it may cause truncation of decimal data. Testing: - Added Planner test for pushing down decimal type of predicates. - Added end-to-end unit-tests for tables with decimal type of columns for Postgres, MySQL, and Impala-to-Impala. - Passed core-tests. Change-Id: I8c9d2e0667c42c0e52436b158e3dfe3ec14b9e3b Reviewed-on: http://gerrit.cloudera.org:8080/21218 Reviewed-by: Michael Smith <michael.smith@cloudera.com> Reviewed-by: Abhishek Rawat <arawat@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
112 lines
3.5 KiB
SQL
112 lines
3.5 KiB
SQL
--
|
|
-- Licensed to the Apache Software Foundation (ASF) under one
|
|
-- or more contributor license agreements. See the NOTICE file
|
|
-- distributed with this work for additional information
|
|
-- regarding copyright ownership. The ASF licenses this file
|
|
-- to you under the Apache License, Version 2.0 (the
|
|
-- "License"); you may not use this file except in compliance
|
|
-- with the License. You may obtain a copy of the License at
|
|
--
|
|
-- http://www.apache.org/licenses/LICENSE-2.0
|
|
--
|
|
-- Unless required by applicable law or agreed to in writing,
|
|
-- software distributed under the License is distributed on an
|
|
-- "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
-- KIND, either express or implied. See the License for the
|
|
-- specific language governing permissions and limitations
|
|
-- under the License.
|
|
|
|
-- Create test data sources and tables
|
|
|
|
USE functional;
|
|
|
|
DROP DATA SOURCE IF EXISTS AllTypesDataSource;
|
|
CREATE DATA SOURCE AllTypesDataSource
|
|
LOCATION '/test-warehouse/data-sources/test-data-source.jar'
|
|
CLASS 'org.apache.impala.extdatasource.AllTypesDataSource'
|
|
API_VERSION 'V1';
|
|
|
|
DROP TABLE IF EXISTS alltypes_datasource;
|
|
CREATE TABLE alltypes_datasource (
|
|
id INT,
|
|
bool_col BOOLEAN,
|
|
tinyint_col TINYINT,
|
|
smallint_col SMALLINT,
|
|
int_col INT,
|
|
bigint_col BIGINT,
|
|
float_col FLOAT,
|
|
double_col DOUBLE,
|
|
timestamp_col TIMESTAMP,
|
|
string_col STRING,
|
|
dec_col1 DECIMAL(9,0),
|
|
dec_col2 DECIMAL(10,0),
|
|
dec_col3 DECIMAL(20,10),
|
|
dec_col4 DECIMAL(38,37),
|
|
dec_col5 DECIMAL(10,5),
|
|
date_col DATE)
|
|
PRODUCED BY DATA SOURCE AllTypesDataSource("TestInitString");
|
|
|
|
DROP TABLE IF EXISTS alltypes_jdbc_datasource;
|
|
CREATE EXTERNAL TABLE alltypes_jdbc_datasource (
|
|
id INT,
|
|
bool_col BOOLEAN,
|
|
tinyint_col TINYINT,
|
|
smallint_col SMALLINT,
|
|
int_col INT,
|
|
bigint_col BIGINT,
|
|
float_col FLOAT,
|
|
double_col DOUBLE,
|
|
date_col DATE,
|
|
string_col STRING,
|
|
timestamp_col TIMESTAMP)
|
|
STORED BY JDBC
|
|
TBLPROPERTIES (
|
|
"database.type"="POSTGRES",
|
|
"jdbc.url"="jdbc:postgresql://localhost:5432/functional",
|
|
"jdbc.driver"="org.postgresql.Driver",
|
|
"driver.url"="/test-warehouse/data-sources/jdbc-drivers/postgresql-jdbc.jar",
|
|
"dbcp.username"="hiveuser",
|
|
"dbcp.password"="password",
|
|
"table"="alltypes");
|
|
|
|
DROP TABLE IF EXISTS alltypes_jdbc_datasource_2;
|
|
CREATE EXTERNAL TABLE alltypes_jdbc_datasource_2 (
|
|
id INT,
|
|
bool_col BOOLEAN,
|
|
tinyint_col TINYINT,
|
|
smallint_col SMALLINT,
|
|
int_col INT,
|
|
bigint_col BIGINT,
|
|
float_col FLOAT,
|
|
double_col DOUBLE,
|
|
date_col DATE,
|
|
string_col STRING,
|
|
timestamp_col TIMESTAMP)
|
|
STORED BY JDBC
|
|
TBLPROPERTIES (
|
|
"database.type"="POSTGRES",
|
|
"jdbc.url"="jdbc:postgresql://localhost:5432/functional",
|
|
"jdbc.driver"="org.postgresql.Driver",
|
|
"driver.url"="hdfs://localhost:20500/test-warehouse/data-sources/jdbc-drivers/postgresql-jdbc.jar",
|
|
"dbcp.username"="hiveuser",
|
|
"dbcp.password"="password",
|
|
"table"="AllTypesWithQuote",
|
|
"column.mapping"="id=id, bool_col=Bool_col, tinyint_col=Tinyint_col, smallint_col=Smallint_col, int_col=Int_col, bigint_col=Bigint_col, float_col=Float_col, double_col=Double_col, date_string_col=Date_string_col, string_col=String_col, timestamp=Timestamp");
|
|
|
|
DROP TABLE IF EXISTS jdbc_decimal_tbl;
|
|
CREATE EXTERNAL TABLE jdbc_decimal_tbl (
|
|
d1 DECIMAL(9,0),
|
|
d2 DECIMAL(10,0),
|
|
d3 DECIMAL(20,10),
|
|
d4 DECIMAL(38,38),
|
|
d5 DECIMAL(10,5))
|
|
STORED BY JDBC
|
|
TBLPROPERTIES (
|
|
"database.type"="POSTGRES",
|
|
"jdbc.url"="jdbc:postgresql://localhost:5432/functional",
|
|
"jdbc.driver"="org.postgresql.Driver",
|
|
"driver.url"="hdfs://localhost:20500/test-warehouse/data-sources/jdbc-drivers/postgresql-jdbc.jar",
|
|
"dbcp.username"="hiveuser",
|
|
"dbcp.password"="password",
|
|
"table"="decimal_tbl");
|