[HIVE-21453] HPL/SQL can not SELECT Date and Timestamp type value into variable

• Type: Bug
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.1.1
• Component/s: hpl/sql
• Labels: pull-request-available

Environment

Centos 7.1, Hive 3.1.1

• Target Version/s: 4.0.0
• Release Note: Resolved the issue that HPL/SQL can not SELECT Date and Timestamp type values INTO variables
• Assignee: DingQiang Liu
• Reporter: DingQiang Liu
• Created: 15/Mar/19 09:59
• Updated: 16/Jun/20 16:51

Description

HPL/SQL forgot Date and Timestamp types when SELECT INTO variables. for example, current implement will set null, not correct value, to variables for following case,  select_into3.sql:

declare v_date date;
declare v_timestamp timestamp(17, 3); 

select
  cast('2019-02-20 12:23:45.678' as date),
  cast('2019-02-20 12:23:45.678' as timestamp)
into
  v_date,
  v_timestamp
from src limit 1;

print 'date: ' || v_date;
print 'timestamp: ' || v_timestamp;

The result when running : bin/hplsql -f select_into3.sql --trace

Configuration file: file:/hive/conf/hplsql-site.xml
Parser tree: (program (block (stmt (declare_stmt declare (declare_stmt_item (declare_var_item (ident v_date) (dtype date))))) (stmt (semicolon_stmt ) (stmt (declare_stmt declare (declare_stmt_item (declare_var_item (ident v_timestamp) (dtype timestamp) (dtype_len ( 17 , 3 )))))) (stmt (semicolon_stmt ) (stmt (select_stmt (fullselect_stmt (fullselect_stmt_item (subselect_stmt select (select_list (select_list_item (expr (expr_spec_func cast ( (expr (expr_atom (string '2019-02-20 12:23:45.678'))) as (dtype date) )))) , (select_list_item (expr (expr_spec_func cast ( (expr (expr_atom (string '2019-02-20 12:23:45.678'))) as (dtype timestamp) ))))) (into_clause into (ident v_date) , (ident v_timestamp)) (from_clause from (from_table_clause (from_table_name_clause (table_name (ident src))))) (select_options (select_options_item limit (expr (expr_atom (int_number 1)))))))))) (stmt (semicolon_stmt ) (stmt (print_stmt print (expr (expr_concat (expr_concat_item (expr_atom (string 'date: '))) || (expr_concat_item (expr_atom (ident v_date))))))) (stmt (semicolon_stmt ) (stmt (print_stmt print (expr (expr_concat (expr_concat_item (expr_atom (string 'timestamp: '))) || (expr_concat_item (expr_atom (ident v_timestamp))))))) (stmt (semicolon_stmt )) <EOF>)
Ln:1 DECLARE v_date date
Ln:2 DECLARE v_timestamp timestamp
Ln:4 SELECT
Ln:4 select
cast('2019-02-20 12:23:45.678' as date), cast('2019-02-20 12:23:45.678' as timestamp)
from src LIMIT 1
Open connection: jdbc:vertica://v001:5433/test (256 ms)
Starting query
Query executed successfully (55 ms)
Ln:4 SELECT completed successfully
Ln:4 SELECT INTO statement executed
Ln:4 COLUMN: ?column?, Date
Ln:4 SET v_date = null
Ln:4 COLUMN: ?column?, Timestamp
Ln:4 SET v_timestamp = null
Ln:12 PRINT
date:
Ln:13 PRINT
timestamp:

Issue Links

• links to: GitHub Pull Request #566