From: "B. Randy" <randy11@...>
Date: 2009-03-14T00:28:18+09:00
Subject: OCI-8, Oracle : 'ORDER BY' doesn't work with 'bind_param'

Hello,
I'm testing the gem 'ruby-oci8'/oci8 (1.0.4) under Windows with Ruby
1.8.6 patchlevel 287. I play with the user SCOTT and the table EMP of
ORACLE.

First, the table :
---------------
Schema = SCOTT, Name =EMP Columns8
EMPNO | NUMBER(4) NOT NULL
ENAME | VARCHAR2(10)
JOB | VARCHAR2(9)
MGR | NUMBER(4)
HIREDATE | DATE
SAL | NUMBER(7,2)
COMM | NUMBER(7,2)
DEPTNO | NUMBER(2) NOT NULL
---------------

The rows :
---------------
7876,ADAMS,CLERK,7788,1983/01/12 00:00:00,1100.0,,20
7499,ALLEN,SALESMAN,7698,1981/02/20 00:00:00,1600.0,300.0,30
7698,BLAKE,MANAGER,7839,1981/05/01 00:00:00,2850.0,,30
7782,CLARK,MANAGER,7839,1981/06/09 00:00:00,2450.0,,10
7902,FORD,ANALYST,7566,1981/12/03 00:00:00,3000.0,,20
7900,JAMES,CLERK,7698,1981/12/03 00:00:00,950.0,,30
7566,JONES,MANAGER,7839,1981/04/02 00:00:00,2975.0,,20
7839,KING,PRESIDENT,,1981/11/17 00:00:00,5000.0,,10
7654,MARTIN,SALESMAN,7698,1981/09/28 00:00:00,1250.0,1400.0,30
7934,MILLER,CLERK,7782,1982/01/23 00:00:00,1300.0,,10
7788,SCOTT,ANALYST,7566,1982/12/09 00:00:00,3000.0,,20
7369,SMITH,CLERK,7902,1980/12/17 00:00:00,800.0,,20
7844,TURNER,SALESMAN,7698,1981/09/08 00:00:00,1500.0,0.0,30
7521,WARD,SALESMAN,7698,1981/02/22 00:00:00,1250.0,500.0,30
---------------

I use 'bind_param' with success for some fields but not with the 'ORDER
BY' clause used with 'bind_param'. If I make a call with 'ORDER BY
ENAME' the result is good. My test code :
---------------
require 'rubygems'
require 'oci8'

# Connect to the table.
connex = OCI8.new('scott', 'tiger', 'My_Base_Oracle')

# Request with 3 parameters.
request = "select * from emp
where SUBSTR(ENAME,1,LENGTH(:who)) = :who AND SAL > :paid order by :how"
cursor = connex.parse(request)

# Bind the parameters.
cursor.bind_param(':who', 'A')      # This work.
cursor.bind_param(':paid', 1000)    # This work.
cursor.bind_param(':how', 'ENAME')  # !! This doesn't work ???
cursor.exec()

# Output.
while row = cursor.fetch()
  puts row.join(" ")
end
---------------

The output, the selection by ':who' and ':paid' works but the ':how' is
ignored.
---------------
7499 ALLEN SALESMAN 7698 1981/02/20 00:00:00 1600.0 300.0 30
7876 ADAMS CLERK 7788 1983/01/12 00:00:00 1100.0  20
---------------

Thank 's for your help.
Randy11
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