SQL & PL/SQL :: Evaluate Dynamic Math Expression?
Jun 22, 2008
I have a user interface where the user can enter a formula using a set of parameters and operators. For eg , the user is given a list of parameters, say : Width, Height , Gauge. The list of operators include standard math functions : + - / * ^
He can select and create a formula like gauge * width. This is stored in a table. At a later time a job is scheduled to evaluate the formula based on parameters for width, gauge and height.
I can evaluate the expression by substituting each parameter.
I can do this using dynamic sql. However I'm not sure how to evaluate the ^ symbol. The equivalent of this is power function.
So if a user enters (height * 2) + (width^2) . How do i evaluate this. I am doing this in pl/sql.
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Sep 4, 2013
I have a complex expression coming as an input and I have to break that into smaller one to evaluate each of them. Explained in example:
Let's assume, I have an input string as "(({A}&{B})||({C}||{D})&({E}||({F}&{G})))". My requirement is to break into logical smaller groups like
1. ({F}&{G})
2. ({E}||({F}&{G}))
3. ({C}||{D})
4. (({A}&{B})
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May 8, 2013
I have created a procedure using the Dynamic SqL and while using the NVL() getting the following error . ORA-00936: missing expression.
The query I have written as
SQL_Txt:=' INSERT INTO VF.tblCData (A, B, C, D, E, F,G,H,I,J)
SELECT '||l_A||',
'||l_B||',
'||l_C||',
'||l_D||',
NULL ,
'||L_F||',
[code]....
For Param1 I have data for one execution and Param2 and Param3 is null for that execution.While executing the same I am getting below
INSERT INTO VF.tblCData (A, B, C, D, E, F,G,H,I,J)
SELECT 25,
1,
7,
6,
NULL ,
5,
[code]....
and error ORA-00936: missing expression is popping up for Param2 and Param3 NVL(,'')
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Feb 29, 2012
I have the following statement dynamic sql statement in a database package.
begin
EXECUTE IMMEDIATE 'SELECT REPLACE(SUBSTR('||V_WHERE_CLAUSE||',1,3, ''AND'', NULL) INTO V_WHERE_FILTER FROM DUAL';
EXCEPTION
NULL;
end;
When executed it gives following error.
ORA-20000: ORA-20000: ORA-00936: missing expression
### TRACE ### ORA-06512: at "NDSS.DUP_SRCH_PKG_MOD", line 931
### END TRACE ###
### TRACE ### ORA-06512: at "NDSS.DUP_SRCH_PKG_MOD", line 935
ORA-06512: at "NDSS.DUP_SRCH_PKG_MOD", line 164
### END TRACE ###
ORA-06512: at "NDSS.DUP_SRCH_PKG_MOD", line 184
ORA-06512: at line 9
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Feb 9, 2011
I got 4 fields:
event_date (01/01/1900 hh:mm:ss)
team_count (number)
interview_count (number)
duration (01/01/1900 hh:mm:ss) - duration of each interview
The calculation is:
(interview_count * team_count * duration(hh:mm)) + event_date
i.e.:
(3 * 2 * 02:30) + 01/01/1900 08:00:00
= 15:00:00 + 01/01/1900 08:00:00
= 01/01/1900 23:00:00.
all I care about is the hh:mm in the result.How can I preform this calculation in pl/sql?
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May 25, 2010
I am trying to get the number of seconds between March 3 2010 and march 31 2010 in Oracle. I am in Eastern time in the US. Everything I try just keeps coming up with 30 days * 86400 seconds per day = 2592000. 1 hour was lost when we switched to daylight savings time so the correct answer is 2588400.
How do a create a function in Oracle that will give me the number of seconds between 2 dates or timestamps that is aware of the loss of an hour in March and the gain of an hour in November?
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Dec 10, 2012
One of my clients need to remove three(of four) CPU to comply the licensing agreement with Oracle.
To avoid problems and also to list the possible problems that removing the CPU can bring, I wish to make a survey of the possible impacts, especially in performance, that removal can cause.
How can I get this information?
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Jan 11, 2012
I want to take a schema level export .The schema size is 115 GB size . Do we require same amount of space to be available in server side (where we are taking a dump) as the schema size or less or more space is required in server side ?
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Oct 22, 2013
I need to recreate my table in order to change the column order. When I use the SQL Commands window and run the SQL, it runs successfully, creates the new table, but doesn't reorder the columns. Is this expected behavior?
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Mar 26, 2013
OK, Now that the syntax has been corrected with "Chanchal Wankhade" I have an entirely new issue. I am sure this issue has to do with my case statement logic. I am getting multiple rows, when I am only looking for one. Here is my code:
SELECT
CASE
WHEN EP.PHYSICAL_DATE IS NULL
THEN
CASE
WHEN EC.ORIGINAL_CONTRACT_START < ((SYSDATE) - 365)
THEN 'NEEDS PHYSICAL'
[code].....
However, only one of these rows should be the output, which is "No". How do you get a nested case statement to evaluate to one result, instead of multiple? I'm quite sure it is in the logic. To spell it out, this is what I am trying to accomplish with the above code: If the "EP.PHYSICAL_DATE" is null, then use these sets of formula's to evaluate the output, BUT if the "EP.PHYSICAL_DATE" is not null, then use these set's of formula's to evaluate the output.
As it stands now, it appears as if my nested case statement is doing exactly what I told it to do, which is to evaluate both conditions, and output both.
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Dec 22, 2010
ved>create table test900 ( a number, b number);
Table created.
ved>insert into test900 values( 9,'');
1 row created.
ved>insert into test900 values( 10,null );
1 row created.
ved>select * from test900;
A B
---------- ----------
9
10
ved>select nvl(length(b),0) from test900;
[code]....
ERROR at line 1:
ORA-01790: expression must have same datatype as corresponding expression..Why the above sql ( case 2 ) gives error?
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Apr 26, 2013
I am trying to execute an xslt (for XML transformation) using xmltype.transform function.
I can't paste XSLT code here, but below is similar what I am doing.
[URL]
I have used a reference of random() method of java.lang.Math in xslt file, and it's giving me below error.
ORA-31011: XML parsing failed
ORA-19202: Error occurred in XML processing
LPX-00607: Invalid reference: 'random'.
I doubt, it's because of "Math" class, which is not present in Oracle, how to load standard java classes.
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Apr 8, 2013
I'm using dynamic sql (DBMS_SQL) to define columns of ref cursor. It works Ok but the problem is when i'm using PL/SQL CURSOR in the REF CURSOR. Then,I'm getting :
Error at line 3
ORA-00932: inconsistent datatypes: expected NUMBER got CURSER
ORA-06512: at "SYS.DBMS_SQL", line 1830
ORA-06512: at "TW.PRINT_REF_CURSOR", line 28
ORA-06512: at line 9
Here is my code:
set serveroutput on
exec DBMS_OUTPUT.ENABLE(1000000);
declare
l_cursor sys_refcursor;
begin
[code]....
Is there a solution or bypass?
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Jan 11, 2013
I need to format a value using Regular Expression.
9911223344, 9911223344
9911223344
11223344Result
(99) 1122-3344, (99) 1122-3344
(99) 1122-3344
1122-3344
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Apr 1, 2013
when i am running the below plsql block i am getting the error like not a group by expressiong.
DECLARE
CURSOR Cur_st
IS
SELECT DISTINCT
CAST (A.STO_NO AS VARCHAR2 (5 CHAR)) AS BU_CODE,
CAST ('STO' AS VARCHAR2 (3 CHAR)) AS BU_TYPE,
CAST (NULL AS VARCHAR2 (7 BYTE)) AS CUST_NO,
CAST (A.CUR_CODE AS VARCHAR2 (3 BYTE)) AS CUR_CODE,
TO_DATE (A.SALES_DATE, 'YYMMDD'),
CAST (A.RECEIPT_NO AS VARCHAR2 (10 BYTE)),
[code]....
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Apr 13, 2013
What is the use of Regular Expression?
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Jan 21, 2011
I have a following table,
CREATE TABLE checkdata
( col1 VARCHAR2(2000)
);
INSERT
INTO checkdata VALUES
[code]......
I need output as ,
INT8144925446-20110118T123723Z
INT8144925448-20110118T123730Z
How do i use Substr and Regular expression here ?
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Apr 4, 2012
I'm working with Object types containing other object types, and I'm getting the error PLS-00363 (Expression cannot be used as an assignment).I'm putting exlpicity all 'SELF' parameters as 'IN OUT', but still get the error...
CREATE OR REPLACE TYPE TYP_PERSON AS OBJECT (
strName VARCHAR2(100),
--
CONSTRUCTOR FUNCTION TYP_PERSON RETURN SELF AS RESULT,
--
MEMBER FUNCTION getName (SELF IN OUT TYP_PERSON) RETURN VARCHAR2,
MEMBER PROCEDURE setName (SELF IN OUT TYP_PERSON, pNewName VARCHAR2)
) NOT FINAL;
[code]....
How can I do this parentObject.getChildObject().setChildFunction()?
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Jul 9, 2010
im trying to take a query that pulls all the info in the current tables, and narrow it down to one day plus current. here is the error i am getting.
(SELECT OH.ORD_CNTRL_NO, OH.ORD_NO, OH.ASSGN_SHIP_DATE, oh.account_no, sum(OL.ORD_QTY) AS ORD_QTY
*
ERROR at line 5:
ORA-00936: missing expression
old query:
select a.assign_no, a.assign_type, a.act_end, X.ord_no, x.account_no,
X.ASSGN_SHIP_DATE, X.ORD_QTY, td.from_loc, sum(td.act_qty) AS ACTQTY, sum(td.exp_qty) AS EXPQTY
from clsd_assign a, clsd_task t, clsd_task_detail td, sku s,
(SELECT OH.ORD_CNTRL_NO, OH.ORD_NO, OH.ASSGN_SHIP_DATE, oh.account_no, sum(OL.ORD_QTY) AS ORD_QTY
[code]...
new query
select a.assign_no, a.assign_type, TRUNC(A.ACT_END), to_char(a.act_end), X.ord_no, x.account_no,
X.ASSGN_SHIP_DATE, X.ORD_QTY, td.from_loc, sum(td.act_qty) AS ACTQTY, sum(td.exp_qty) AS EXPQTY
from clsd_assign a, clsd_task t, clsd_task_detail td, sku s
where a.act_end between to_char(sysdate -1, 'dd-mon-yyyy') and to_char(sysdate, 'dd-mon-yyyy')
[code]...
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Aug 22, 2012
i am posting create and insert statements for a problem i am facing
create table tgh(NAME VARCHAR(20),LANG VARCHAR(20))
insert into tgh values('AC','ORIYA')
insert into tgh values('DF','BENGALI')
insert into tgh values('ik','english')
the below statements are for table copu
create table copu(CNAME VARCHAR(20),CLANG VARCHAR(20))
insert into copu values('ACdf','oriya')
insert into copu values('deg','ptot')
when i do another insert as shown below
insert into copu (cname,clang) values where
copu.cname not exists in( select tgh.name,tgh.lang from tgh where upper(tgh.name)=upper(copu.cname))
i get ora-00936 missing expression
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Jan 3, 2012
I wrote a query for minimum average salary of Job_id using inline view but it is not working..
The query is as follow
SELECT job_id, avg(salary)
FROM employees , (SELECT MIN(AVG(salary)) min_avg_sal
FROM employees
GROUP BY job_id) b
GROUP BY job_id
having avg(salary)=b.min_avg_sal;
It returns error as
################################
having avg(salary)=b.min_avg_sal
*
ERROR at line 6:
ORA-00979: not a GROUP BY expression
#########################
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Jun 6, 2012
Sample Data:
SELECT 'A/BCD/CCE/DFFFF' test from dual
Expected Output:
SELECT 'A' A,
'BCD' B,
'CCE' C,
'DFFFF' D
FROM DUAL;
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Mar 28, 2011
getting expression into a Group By query in oracle.
I have a simple table with two columns. 'ID' and 'Amount'
I want output of the SQL to the following (only 2 fields in the output): I have attached the desired output.
select sum(amountheld) from table1
where member_status = 'MEMBER'
group by ID
This group by query works. But how can i get the expression field (the first field which 'TEMPACCOUNT') in this query (based on my attached output).
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Nov 13, 2012
New to using Oracle and SQL Developer. I am trying to subtract a maximum date from today and adding back 1 to get a field named daysSinceLastActivity....
Syntax I am trying is (date()-max(activity_date))+1 as daysSinceLastActivity
I keep getting a error message of missing expression. After googling, I am not finding anything. This should be a simple calculation.
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Feb 12, 2013
CREATE TABLE TEST1
(
OFFICE_PRODUCTS NUMBER,
OFFICE_ELECTRONICS NUMBER
)
Insert into TEST1 (OFFICE_PRODUCTS, OFFICE_ELECTRONICS) Values(1, 0);
COMMIT;
CREATE TABLE TEST2
(
EXPORT_FIELD_NAME VARCHAR2(100 BYTE),
EXPORT_COLUMN_EXPRESSION VARCHAR2(100 BYTE)
)
Insert into TEST2
(EXPORT_FIELD_NAME, EXPORT_COLUMN_EXPRESSION)
Values ('A1', 'least(OFFICE_PRODUCTS, OFFICE_ELECTRONICS)');
COMMIT;
I want to be execute the expression should run in select statement how to do? and tried as like below,it's not working.
select (select EXPORT_COLUMN_EXPRESSION from test2 where EXPORT_FIELD_NAME='A1') FROM TEST1;
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Apr 12, 2013
I am using pipelined functions. I've written a few with no problem this one seems to be giving an error when I am using techniques that appear very similar to ones that work.
I am doing this all in a package;
The type definition is;
TYPE SUSPECT_LINKAGES_FAC_RECORD IS RECORD
(
PATIENT_ID TUMOR.TUMOR_PATIENT_ID%TYPE,
CENTRAL_SEQ TUMOR.TUMOR_CENTRAL_SEQ%TYPE,
MP_REVIEW_FLAG NUMBER(1),
FACILITY_FLAG NUMBER
);
The variable definition is;
OUT_REC SUSPECT_LINKAGES_FAC_RECORD;
The line with the error is;
PIPE ROW(OUT_REC);
This is the entire function;
FUNCTION GET_SUSPECT_LINKAGE_FAC_FLAGS RETURN SUSPECT_LINKAGES_TABLE PIPELINED AS
CURSOR CURS_SUSPECT_LINKAGES IS
SELECT * FROM TABLE(TUMOR_UTILITIES.GET_SUSPECT_LINKAGE_FLAGS())
order by 1,2,3 DESC;
TEMP_REC SUSPECT_LINKAGES_RECORD;
MATCH_COUNT NUMBER;
OUT_REC SUSPECT_LINKAGES_FAC_RECORD;
[code].....
I get "PL-00382 expression is of wrong type" on both pipe row (out_rec); lines.
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Mar 19, 2013
i got this error 'PLS-00382: expression is of wrong type'
--declaration
l_recipe_detail_tbl apps.gmd_recipe_detail.recipe_detail_tbl;
begin
ln_recipe_id := NULL;
[Code].....
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Jun 5, 2009
I have an arithmatic expression which is dynamic say
expression = [Col5]/[Col1]
I will be using this in building a dynamic SQL.so i have to make sure that the divisible by zero is taken care. In the expression Col1,Col5 are values coming from a SQL.
For the above expression, my conversion will be
ROUND( ((CCol4 / DECODE (CCol1, 0, NULL, CCol1) )), 0).
I have to build a function which takes in the expression and fetches me the result.My expression can be any combination of arithmaticexpression involving columns.
Ex:
[Col4 + Col2]/[Col3-Col1]*[Col5].
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Mar 25, 2013
I ran into a problem recently which has to do with the following query:
SELECT '' || ROUND(GEOGR_LAENGE,5) || ',' || ROUND(GEOGR_BREITE,5) || '," [BUE] ' || BAUFORM_GRUPPE || '"', KM
AS TEXT
FROM MYTABLEA mmtable
WHERE (mmtable.GEOGR_LAENGE IS NOT NULL
AND mmtable.GEOGR_BREITE IS NOT NULL
AND mmtable.STRECKE_NR IN
(
[code].....
The problem is, that Oracle alerts a missing expression at line 4, and highlights the "IS NOT NULL". Personally I don't see that anything is wrong with this line. I think the problems source is somewhere else but I cannot find it.
I'll give you a little bit of background to the script:
What I am trying to achieve is to request the values in the first line with the following conditions:
- mmtable.GEOGR_LAENGE, GEOGR_BREITE must not be empty
- rbtable.STRECKE_NR for the requested line (which is similar to mmtable.STRECKE_NR) must have "MITTE" as a value for NL_NAME
- mmtable.KM => rbtable.VON_KM
- mmtable.KM <= rbtable.BIS_KM
so that only those lines will be returned.
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Oct 13, 2010
I ran into something that has me wondering about which errors are caught at compile-time, and which are caught at runtime. There is a pretty big package with lots of complicated queries that heavily use GROUP BY, and in the last couple of years I thought I never had the case of an ORA-00979 happening an RUNTIME, which is now happening.
The last heavy changes in that package did I make in the Oracle 9.2 days, and I *believe* (although my memory might be wrong) that back then the ORA-00979 errors came up at compile time.
So is it normal that the error doesn't show up during compile time, only during runtime, or should it be considered a bug?
SQL> CREATE TABLE test_tab(a NUMBER(1), b NUMBER(1));
Table created.
SQL> INSERT INTO test_tab VALUES (1,1);
1 row created.
SQL>
SQL> CREATE OR REPLACE PROCEDURE test_prod AS
2 v_a NUMBER;
3 v_b NUMBER;
4 BEGIN
5
6 SELECT a,b
7 INTO v_a, v_b
8 FROM test_tab
9 GROUP BY a;
10
11 END;
12 /
Procedure created.
SQL>
SQL> BEGIN
2 test_prod;
3 END;
4 /
BEGIN
*
ERROR at line 1:
ORA-00979: not a GROUP BY expression
ORA-06512: at "PFK.TEST_PROD", line 6
ORA-06512: at line 2
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