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acca24fe029781e01b81ba9ce7952b377d7504d0
impala/testdata/workloads/functional-query/queries/QueryTest/hive-jdbc-mysql-tables.test
pranav.lodha acca24fe02 IMPALA-14005: Support for quoted reserved words column names 
This change updates the way column names are
projected in the SQL query generated for JDBC
external tables. Instead of relying on optional
mapping or default behavior, all column names are now
explicitly quoted using appropriate quote characters.

Column names are now wrapped with quote characters
based on the JDBC driver being used:
1. Backticks (`) for Hive, Impala and MySQL
2. Double quotes (") for all other databases

This helps in the support for case-sensitive or
reserved column names.

Change-Id: I5da5bc7ea5df8f094b7e2877a0ebf35662f93805
Reviewed-on: http://gerrit.cloudera.org:8080/23066
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Reviewed-by: Wenzhe Zhou <wzhou@cloudera.com>
2025-08-12 15:01:13 +00:00

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====
---- QUERY
select * from country_mysql;
---- RESULTS
1,'India',true,10,100,1000,10000,1.100000023841858,1.11,2024-01-01,'IN',2024-01-01 10:00:00
2,'Russia',false,20,200,2000,20000,2.200000047683716,2.22,2024-02-01,'RU',2024-02-01 11:00:00
3,'USA',true,30,300,3000,30000,3.299999952316284,3.33,2024-03-01,'US',2024-03-01 12:00:00
---- TYPES
INT, STRING, BOOLEAN, SMALLINT, SMALLINT, INT, BIGINT, FLOAT, DOUBLE, DATE, STRING, TIMESTAMP
====
---- QUERY
select * from country_keystore_mysql;
---- RESULTS
1,'India',true,10,100,1000,10000,1.100000023841858,1.11,2024-01-01,'IN',2024-01-01 10:00:00
2,'Russia',false,20,200,2000,20000,2.200000047683716,2.22,2024-02-01,'RU',2024-02-01 11:00:00
3,'USA',true,30,300,3000,30000,3.299999952316284,3.33,2024-03-01,'US',2024-03-01 12:00:00
---- TYPES
INT, STRING, BOOLEAN, SMALLINT, SMALLINT, INT, BIGINT, FLOAT, DOUBLE, DATE, STRING, TIMESTAMP
====
---- QUERY
select id, name, date_col from country_mysql;
---- RESULTS
1,'India',2024-01-01
2,'Russia',2024-02-01
3,'USA',2024-03-01
---- TYPES
INT, STRING, DATE
====
---- QUERY
select id, name, date_col from country_keystore_mysql;
---- RESULTS
1,'India',2024-01-01
2,'Russia',2024-02-01
3,'USA',2024-03-01
---- TYPES
INT, STRING, DATE
====
---- QUERY
select count(*) from country_mysql;
---- RESULTS
3
---- TYPES
BIGINT
====
---- QUERY
select count(*) from country_keystore_mysql;
---- RESULTS
3
---- TYPES
BIGINT
====
---- QUERY
select distinct name from country_mysql;
---- RESULTS
'India'
'Russia'
'USA'
---- TYPES
STRING
====
---- QUERY
select distinct name from country_keystore_mysql;
---- RESULTS
'India'
'Russia'
'USA'
---- TYPES
STRING
====
---- QUERY
# Check for null values
select * from country_mysql where string_col IS NULL;
---- RESULTS
---- TYPES
INT, STRING, BOOLEAN, SMALLINT, SMALLINT, INT, BIGINT, FLOAT, DOUBLE, DATE, STRING, TIMESTAMP
====
---- QUERY
select * from country_keystore_mysql where string_col IS NULL;
---- RESULTS
---- TYPES
INT, STRING, BOOLEAN, SMALLINT, SMALLINT, INT, BIGINT, FLOAT, DOUBLE, DATE, STRING, TIMESTAMP
====
---- QUERY
# Order by integer column
select id, name, int_col from country_mysql order by int_col DESC;
---- RESULTS
3,'USA',3000
2,'Russia',2000
1,'India',1000
---- TYPES
INT, STRING, INT
====
---- QUERY
select id, name, int_col from country_keystore_mysql order by int_col DESC;
---- RESULTS
3,'USA',3000
2,'Russia',2000
1,'India',1000
---- TYPES
INT, STRING, INT
====
---- QUERY
# Select using case statement
select id, name, case when bool_col then 'Active' else 'Inactive' end as status from country_mysql;
---- RESULTS
1,'India','Active'
2,'Russia','Inactive'
3,'USA','Active'
---- TYPES
INT, STRING, STRING
====
---- QUERY
select id, name, case when bool_col then 'Active' else 'Inactive' end as status from country_keystore_mysql;
---- RESULTS
1,'India','Active'
2,'Russia','Inactive'
3,'USA','Active'
---- TYPES
INT, STRING, STRING
====
---- QUERY
# Check for minimum date
select min(date_col) from country_mysql;
---- RESULTS
2024-01-01
---- TYPES
DATE
====
---- QUERY
select min(date_col) from country_keystore_mysql;
---- RESULTS
2024-01-01
---- TYPES
DATE
====
---- QUERY
# Join with a self table alias
select a.id, a.name, b.name from country_mysql a join country_mysql b on a.id <> b.id;
---- RESULTS
1,'India','Russia'
1,'India','USA'
2,'Russia','India'
2,'Russia','USA'
3,'USA','India'
3,'USA','Russia'
---- TYPES
INT, STRING, STRING
====
---- QUERY
select a.id, a.name, b.name from country_keystore_mysql a join country_keystore_mysql b on a.id <> b.id;
---- RESULTS
1,'India','Russia'
1,'India','USA'
2,'Russia','India'
2,'Russia','USA'
3,'USA','India'
3,'USA','Russia'
---- TYPES
INT, STRING, STRING
====
---- QUERY
# Left join with another table
select a.id, a.name, b.string_col from country_mysql a left join country_keystore_mysql b on a.id = b.id;
---- RESULTS
1,'India','IN'
2,'Russia','RU'
3,'USA','US'
---- TYPES
INT, STRING, STRING
====
---- QUERY
select a.id, a.name, b.string_col from country_keystore_mysql a left join country_mysql b on a.id = b.id;
---- RESULTS
1,'India','IN'
2,'Russia','RU'
3,'USA','US'
---- TYPES
INT, STRING, STRING
====
---- QUERY
# Right join with another table
select a.id, a.name, b.string_col from country_mysql a right join country_keystore_mysql b on a.id = b.id;
---- RESULTS
1,'India','IN'
2,'Russia','RU'
3,'USA','US'
---- TYPES
INT, STRING, STRING
====
---- QUERY
select a.id, a.name, b.string_col from country_keystore_mysql a right join country_mysql b on a.id = b.id;
---- RESULTS
1,'India','IN'
2,'Russia','RU'
3,'USA','US'
---- TYPES
INT, STRING, STRING
====
---- QUERY
# Full outer join
select a.id, a.name, b.string_col from country_mysql a full outer join country_keystore_mysql b on a.id = b.id;
---- RESULTS
1,'India','IN'
2,'Russia','RU'
3,'USA','US'
---- TYPES
INT, STRING, STRING
====
---- QUERY
select a.id, a.name, b.string_col from country_keystore_mysql a full outer join country_mysql b on a.id = b.id;
---- RESULTS
1,'India','IN'
2,'Russia','RU'
3,'USA','US'
---- TYPES
INT, STRING, STRING
====
---- QUERY
# Using IN clause
select * from country_mysql where name IN ('India', 'USA');
---- RESULTS
1,'India',true,10,100,1000,10000,1.100000023841858,1.11,2024-01-01,'IN',2024-01-01 10:00:00
3,'USA',true,30,300,3000,30000,3.299999952316284,3.33,2024-03-01,'US',2024-03-01 12:00:00
---- TYPES
INT, STRING, BOOLEAN, SMALLINT, SMALLINT, INT, BIGINT, FLOAT, DOUBLE, DATE, STRING, TIMESTAMP
====
---- QUERY
select * from country_keystore_mysql where name IN ('India', 'USA');
---- RESULTS
1,'India',true,10,100,1000,10000,1.100000023841858,1.11,2024-01-01,'IN',2024-01-01 10:00:00
3,'USA',true,30,300,3000,30000,3.299999952316284,3.33,2024-03-01,'US',2024-03-01 12:00:00
---- TYPES
INT, STRING, BOOLEAN, SMALLINT, SMALLINT, INT, BIGINT, FLOAT, DOUBLE, DATE, STRING, TIMESTAMP
====
---- QUERY
select * from quoted_col;
---- RESULTS
1,'India',true,10,100,1000,10000,1.100000023841858,1.11,2024-01-01,'IN',2024-01-01 10:00:00
2,'Russia',false,20,200,2000,20000,2.200000047683716,2.22,2024-02-01,'RU',2024-02-01 11:00:00
3,'USA',true,30,300,3000,30000,3.299999952316284,3.33,2024-03-01,'US',2024-03-01 12:00:00
---- TYPES
INT, STRING, BOOLEAN, SMALLINT, SMALLINT, INT, BIGINT, FLOAT, DOUBLE, DATE, STRING, TIMESTAMP
====
---- QUERY
select id, name, date_col from quoted_col;
---- RESULTS
1,'India',2024-01-01
2,'Russia',2024-02-01
3,'USA',2024-03-01
---- TYPES
INT, STRING, DATE
====
---- QUERY
select count(*) from quoted_col;
---- RESULTS
3
---- TYPES
BIGINT
====
---- QUERY
select distinct name from quoted_col;
---- RESULTS
'India'
'Russia'
'USA'
---- TYPES
STRING
====
---- QUERY
# Check for null values
select * from quoted_col where `freeze` IS NULL;
---- RESULTS
---- TYPES
INT, STRING, BOOLEAN, SMALLINT, SMALLINT, INT, BIGINT, FLOAT, DOUBLE, DATE, STRING, TIMESTAMP
====
---- QUERY
# Order by integer column
select id, name, int_col from quoted_col order by int_col DESC;
---- RESULTS
3,'USA',3000
2,'Russia',2000
1,'India',1000
---- TYPES
INT, STRING, INT
====
---- QUERY
# Select using case statement
select id, name, case when bool_col then 'Active' else 'Inactive' end as status from quoted_col;
---- RESULTS
1,'India','Active'
2,'Russia','Inactive'
3,'USA','Active'
---- TYPES
INT, STRING, STRING
====
---- QUERY
# Check for minimum date
select min(date_col) from quoted_col;
---- RESULTS
2024-01-01
---- TYPES
DATE
====
---- QUERY
# Join with a self table alias
select a.id, a.name, b.name from quoted_col a join quoted_col b on a.id <> b.id;
---- RESULTS
1,'India','Russia'
1,'India','USA'
2,'Russia','India'
2,'Russia','USA'
3,'USA','India'
3,'USA','Russia'
---- TYPES
INT, STRING, STRING
====
---- QUERY
# Left join with another table
select a.id, a.name, b.`freeze` from quoted_col a left join quoted_col b on a.id = b.id;
---- RESULTS
1,'India','IN'
2,'Russia','RU'
3,'USA','US'
---- TYPES
INT, STRING, STRING
====
---- QUERY
select a.id, a.name, b.`freeze` from quoted_col a left join quoted_col b on a.id = b.id;
---- RESULTS
1,'India','IN'
2,'Russia','RU'
3,'USA','US'
---- TYPES
INT, STRING, STRING
====
---- QUERY
# Right join with another table
select a.id, a.name, b.`freeze` from quoted_col a right join quoted_col b on a.id = b.id;
---- RESULTS
1,'India','IN'
2,'Russia','RU'
3,'USA','US'
---- TYPES
INT, STRING, STRING
====
---- QUERY
select a.id, a.name, b.`freeze` from quoted_col a right join quoted_col b on a.id = b.id;
---- RESULTS
1,'India','IN'
2,'Russia','RU'
3,'USA','US'
---- TYPES
INT, STRING, STRING
====
---- QUERY
# Full outer join
select a.id, a.name, b.`freeze` from quoted_col a full outer join quoted_col b on a.id = b.id;
---- RESULTS
1,'India','IN'
2,'Russia','RU'
3,'USA','US'
---- TYPES
INT, STRING, STRING
====
---- QUERY
select a.id, a.name, b.`freeze` from quoted_col a full outer join quoted_col b on a.id = b.id;
---- RESULTS
1,'India','IN'
2,'Russia','RU'
3,'USA','US'
---- TYPES
INT, STRING, STRING
====
---- QUERY
# Using IN clause
select * from quoted_col where name IN ('India', 'USA');
---- RESULTS
1,'India',true,10,100,1000,10000,1.100000023841858,1.11,2024-01-01,'IN',2024-01-01 10:00:00
3,'USA',true,30,300,3000,30000,3.299999952316284,3.33,2024-03-01,'US',2024-03-01 12:00:00
---- TYPES
INT, STRING, BOOLEAN, SMALLINT, SMALLINT, INT, BIGINT, FLOAT, DOUBLE, DATE, STRING, TIMESTAMP
====
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