SQL & PL/SQL :: To Display Null Rows When No Match
Apr 23, 2010
I have table as follows:
create table sample1 (
i number ,
j date,
k number)
insert into sample1 values (1,'23-Apr-2010',11)
insert into sample1 values (2,'22-Apr-2010',12)
insert into sample1 values (3,'21-Apr-2010',13)
insert into sample1 values (4,'19-Apr-2010',14)
insert into sample1 values (5,'18-Apr-2010',15)
insert into sample1 values (6,'17-Apr-2010',16)
I would like to get nulls , if there is no data for a date. As we can see , here i am missing the data for '20-Apr-2010'.
I did it through "UNIX" , but it's not efficient.
The data might be missing for the complete week also. I need to test in this way only for the last 7 days. I tried something like this:
select i, j , sum(k)
from sample1
where j in (select to_date(sysdate - rownum)
from dual
connect by rownum < = 7)
group by i, j
I dont want to print the repeated value(NAME) of C1 multiple times as below.
C1C2C3C4 NAMEJOHN10ABC SMITH30DEF ROBERT60XYZ
I could do it using the below query using union with the rownum.
select * from ( select rownum rn, c1,c2,c3,c4 from table_new ) where rn =1 union select * from ( select rownum rn, decode(c1,null,null),c2,c3,c4 from table_new ) where rn between 2 and 3
Is there any other way of displaying using a single sql query.
I have select list which has null and other values. I have created a blank HTML region with the following text
Report for the year &P2_YEAR. and for geography &P2_GEOG.
Now P2_YEAR works fine because, it is always populated with a year. However, &P2_GEOG has 'All' as null value since we can see the report for all geographies. However, if the all option is selected, the above &P2_GEOG. shows as null. Since its not a PL/SQL proc, I cannot put in a NVL. I am guessing one possible way is to write a PL/SQL code before region and then check if its null and then try to populate a new hidden field and show, something like that. Wondering if there is a way to do it directly in the HTML region?
I have a table with columns emp_i, LOC_C and SUBSID_C. I want to find all emp_i's with LOC_C OR SUBSID_C as always NULL. Please note that the value should be NULL, always, for all dates.
The query --- should return 102 as LOC_C OR SUBSID_C is ALWAYS NULL. should return 103 as LOC_C is ALWAYS NULL. should not return 101, as LOC_C is not ALWAYS NULL. In other words, the query should give list of emp_i who never ever had a non-null value for LOC_C OR SUBSID_C. The purpose is to find the emp_i for which the columns LOC_C and SUBSID_C are never used.
I tried the query: --------------------------------------------------- SELECT DISTINCT ORG_EMP_I FROM tab1 WHERE ORG_GRP_I = 58 AND ORG_EMP_I NOT IN ( SELECT DISTINCT org_emp_i FROM tab1 ap WHERE ap.ORG_GRP_I = 58 AND trim(ap.LOC_C) IS NOT NULL OR ap.ORG_SBSID_C IS NOT NULL ) ---------------------------------------------------
Oracle version details BANNER Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - Production PL/SQL Release 11.1.0.7.0 - Production CORE 11.1.0.7.0 Production TNS for 32-bit Windows: Version 11.1.0.7.0 - Production
I am trying to do a simple query where I need to return the rows from a table and treat each rown according to some rules.The query works fine, and returns all the rows, usually I have 2 rows returned. WHen I add to the query where ROWNUM = 1, I get the first row returned, but when I use when ROWNUM =2 OR ROWNUM >1, I always get null rows retured, even if I have rows in the database. Here is my query:
SELECT on_time INTO on_time2 FROM work.work_unit WHERE work_code = 1 AND emp_no = :entry_blk.p_emp_no AND work_date = :entry_blk.p_work_date WHERE ROWNUM = 2; --RETURN NULL
I changed it to the following format, but still I get the same results, only I get data when I say when rownum = 1, i get back the first record in the query
SELECT on_time INTO on_time2 FROM (SELECT on_time FROM work.work_unit WHERE work_code = 1 AND emp_no = :entry_blk.p_emp_no AND work_date = :entry_blk.p_work_date) WHERE ROWNUM = 2;
I can't move forward in my form until I figure out why this is not returning records
I need a generic query to generate total # of records for each table in a schema, total # of records that are not null for each column in the table, and total # of records that are null for each of those columns in those tables.
ex:
the output should look like this.
owner schema table_name total# recs in the table, column_name, ------ ------ ---------- ------------------------- -----------
# of records not null # of records null ---------------------- --------------------
I am bit confused to display all the rows in a column using stored procedure like
In sqlserver: create procedure test as begin select * from table; end in sqlserver it is working perfectly.
In oracle: create or replace procedure test is begin select * from table; end;
But in oracle i am getting an error like select * into something like that.I understand the error. i.e. i need to move the column values into variables.if it a single row then there will be no problem.i want to display all the rows in the table at one time.i can not use cursors.
i want to display all the columns of emp table in rows.O/P should be like below:---------------------------------------------Columns------------empnoenamesaldeptnomgr
Error report: ORA-06550: line 3, column 19: PLS-00225: subprogram or cursor 'LOGIN_USER' reference is out of scope ORA-06550: line 3, column 19: PL/SQL: Item ignored ORA-06550: line 4, column 18:
TABLE_A ------------------------------ ID DEPT CRS ------------------------------ 1 CS CS_100 2 SCIENCE SCI_150 3 MATH MATH_400 4 HISTORY HIS_110
[Code]...
To display CRS from TABLE_A where DEPT = 'MATH' but in the following format.,
-------------------------------------------- NO DEPT CRS -------------------------------------------- 1 MATH MATH_400, MATH_550, MATH_230 --------------------------------------------
instead of., -------------------------- NO DEPT CRS --------------------------- 1 MATH MATH_400 2 MATH MATH_550 3 MATH MATH_230 ---------------------------
The table has single column & the values may differ,that is, they may have 1-2-3-...-n in a single row, but the desired output is to be in the rows as shown above.
I tried concepts of SQL up to my knowledge, but I failed. The query to be done only in SQL.complete this query.
I am running a GROUP BY query on a few columns of enumerated data like:
select count(*), Condition, Size group by Condition, Size;
COUNT(*) CONDITION SIZE -------- ---------- -------- 3 MINT L 2 FAIR L 4 FAIR M 1 MINT S
Well, let's say I also have a timestamp field in the database. I cannot run a group by with that involved because the time is recorded to the milisec and is unique for every record. Instead, I want to include this in my group by function based on whether or not it is NULL.
For example:
COUNT(*) CONDITION SIZE SOLDDATE -------- ---------- -------- ---------- 3 MINT L ISNULL 2 FAIR L NOTNULL 2 FAIR M NOTNULL 2 FAIR M ISNULL 1 MINT S ISNULL
I want to implement a business rule such as we have for each id at most 1 dat null. So, I've created this unique index on test.
create unique index x_only_one_dat_cess_null on test(id, case when dat_cess is null then 'NULL' else to_char(dat_cess, 'dd/mm/yyyy') end);
insert into test values (1, sysdate); insert into test values (1, sysdate - 1); insert into test values (1, null); insert into test values (1, null); -- ----- insert into test values (2, sysdate); insert into test values (2, sysdate - 1); insert into test values (2, null);
The 4th insert will cause an error and this is what I wanted to implement. OK. Now the problem is that for non-null values of dat, we can't have data like this
because of the unique index (the 2nd and the 3rd row are equal). So just for learning purposes, how could we allow at most one null value of dat and allow duplicates for non-null values of dat.
SQL> Describe Stu_Table Name Null? Type ----------------------------------------- -------- ---------------------------- STU_ID VARCHAR2(2) STU_NAME VARCHAR2(10) STU_CLASS VARCHAR2(10)
now when i try to modify this Stu_id column to not null its give me error.
SQL>ALTER TABLE Stu_Table MODIFY Stu_Id int(3)not null; ALTER TABLE Stu_Table MODIFY Stu_Id int(3)not null * ERROR at line 1: ORA-01735: invalid ALTER TABLE option
and when i try to add new column with not null its also gives me error
SQL> ALTER TABLE Stu_Table add C1_TEMP integer NOT NULL; ALTER TABLE Stu_Table add C1_TEMP integer NOT NULL * ERROR at line 1: ORA-01758: table must be empty to add mandatory (NOT NULL) column
Suppose I have a table in which I have first_name, last_name, dob. Now I have to fetch on the basis of first_name=some_value, last_name=some_value and dob=some_date. I want to sort it on the basis of exactly fetched values. Let me take an example-
test table contains-
first_name last_name dob ---------- --------- ---- Manu Batham 02-Feb-1988 Manu Sharma 01-Jul-1987 Avinash Pandey 03-Feb-1988 Ankit Gupta 02-Feb-1988 Manu Aggrawal 02-Feb-1988 Manu Batham 20-Jan-1985 Sikha Batham 17-Apr-1988
first_name last_name dob ---------- --------- ---- Manu Batham 02-Feb-1988 Manu Aggrawal 02-Feb-1988 Manu Batham 20-Jan-1985 Manu Sharma 01-Jul-1987 Ankit Gupta 02-Feb-1988 Sikha Batham 17-Apr-1988
My result is based on the approach- if matched first_name, last_name, dob --> 1st prefrence in order if matched first_name, dob --> 2nd prefrence in order if matched first_name, last_name --> 3rd prefrence in order if matched last_name, dob --> 4th prefrence in order if matched first_name --> 5th prefrence in order if matched last_name --> 6th prefrence in order if matched dob --> 7th prefrence in order
I designed the following query for the same-
Select first_name,last_name,dob,1 "Order" from test Where first_name='Manu' and last_name='Batham' and dob=to_date('02/02/1988','dd/mm/yyyy') union Select a,b,c,2 from test Where [code]......
I know that this is not the best possible solution as the table is very big and doing so many hits on that table will certainly decrease the performance.
Seemingly a very simple problem, but I can't seem to figure it out. Table below is a table that holds UserId' s and LinkId's.
CREATE TABLE UserLink (UserId NUMBER, LinkId NUMBER ); ALTER TABLE UserLink ADD PRIMARY KEY (UserId, LinkId); INSERT INTO UserLink VALUES (1, 1); INSERT INTO UserLink VALUES (1, 2); INSERT INTO UserLink VALUES (3, 1); INSERT INTO UserLink VALUES (4, 1);
I'm looking for a query in which I can plug a List of LinkId's that outputs only users that have a relationship with ALL LinkId's provided. In this example you may assume that the List is equal to (1, 2), but you can't make any assumptions about the size of the list, other than size != 0. The query to find users that match ANY of the provided LinkId's is quite simple:
SELECT UserId FROM UserLink WHERE LinkId IN (1,2)
The correct query should output:
USERID ------ 1
And it should work for any size > 0 list of values.
I have 8 columns. Some of them might be null.I want to display all 8 columns in my result. Not null columns will be first and null at the end.Here is a sample data :
I have a problem with a query I'm trying to run. I need to match two columns containing names, first column (NAME1) contains only the surname and the second column (NAME2) contains a surname and initials, with the initials turning up on either side of the surname.
