PL/SQL :: How To Get Constraint Name / Table And Column Names
Sep 12, 2012
I am a junior DBA. I want to check how many columns are under PRIMARY KEY constraint.
I used dba_constraints view. Please find below details.
SQL> select OWNER,CONSTRAINT_NAME,CONSTRAINT_TYPE,TABLE_NAME from dba_constraints
2 where TABLE_NAME='DSET_PRODUCT_S';
OWNER CONSTRAINT_NAME C TABLE_NAME
------------------------------ ------------------------------ - ----------------------------------------
SCOTT SYS_C10202456 C EMPLOYEE
SCOTT SYS_C234576 C DEPT
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Oct 26, 2009
I would like to add a constraint "default value" for a table column, with a name.
I know how to do it for a constraint "not null" : ALTER TABLE tablename MODIFY columnname CONSTRAINT constraintname NOT NULL;
But I don't know how to do it for a constraint "default value".How can I do ?
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Jul 18, 2012
I am trying to join column names from a table with data from a different table. I think i should be able to pass the parameter to a 'select list' in a query. Look at my sample data below. And the data in sales table can grow till 15 rows and similarly corresponding columns in saleshist.
CREATE TABLE SALESHIST
(
PRODUCT VARCHAR2(30 BYTE),
Q1 VARCHAR2(30),
Q2 VARCHAR2(30),
Q3 VARCHAR2(30),
Q4 VARCHAR2(30)
)
[code]......
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May 9, 2012
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit
PL/SQL Release 10.2.0.5.0 - Production
"CORE10.2.0.5.0Production"
TNS for Linux: Version 10.2.0.5.0 - Production
NLSRTL Version 10.2.0.5.0 - Production
See attachment for table creation and table data.
The table tbl_completed has two columns, id and completed. I have created a query that does provide me with the result set that I need, but I need to pivot the rows into columns. So instead of a result set to look like this:
select completed, count(completed) as theCount from tbl_completed group by completed;
COMPLETED THECOUNT
Y 772
N 720
I need a result set to look like this:
COMPLETED,Y,N
THECOUNT,772,720
The best solution that I have discovered is this, but I figuring their might be a better way.
select
(select 'THECOUNT' from dual) as COMPLETED,
(select count(completed) from tbl_completed where completed = 'Y') as Y,
(select count(completed) from tbl_completed where completed = 'N') as N
from dual;
COMPLETED,Y,N
THECOUNT,772,720
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Apr 28, 2013
I have a requirement that i should list out all the table names which are all using timestamp datatype in a specified schema. Is there any way to find those table names by using any system tables.
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Mar 6, 2013
I have a schema in which i have 10000 tables and i want to fetch table names from the schema where org_id is not equal to 1,
Note: Here org_id is the column name .
Provide me sql code or procedure to achieve this.
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Jul 7, 2010
I have 20 tables. In all 20 tables, some of column names are same and some are different. I need to find all column names in all 20 tables that have same names.
create table t1 (
col1 varchar2(10),
col2 varchar2(10));
create table t2 (
col1 varchar2(10),
col3 varchar2(10));
create table t3 (
col1 varchar2(10));
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Feb 3, 2012
What I am trying to do is print out page that displays all of the column titles and the data under them for a query given by the user. It is then going to be put into an excel spreadsheet.
I've done this before with Java, simply by using the getMetaData function, but I can't seem to find an alternative for PL/SQL. It seems at the very least I need to know the number of columns in a query, but that would defeat the purpose of this.
Is what I am trying to do even possible or is knowing the column names an absolute necessity when printing table data?
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Apr 9, 2012
Why Oracle allowing the Built-in function names as column name in data base table
Ex :
create table to_char
(to_number number(8) , to_char char(20) , to_date date ,substr varchar2(20))
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Dec 25, 2007
i want to get table name, constraint name, constraint type with join processes in string type. this is what i want: alter table tablename add constraint constraintname constrainttype(columnname)
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May 20, 2011
I had a table( T1). Five columns exists in the table. The table data is like below
C1C2C3 C4C5
--- ----- ---- ----- ----
JAN FEB MAR APR MAY
One Two Three Four Five
I need the output like below one
JANFEBMARAPRMAY
---- ----- ----- ---- ----
OneTwoThreeFourFive
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Dec 2, 2012
I have a tmp table with 6 cols, and data to be inserted is from two other tables. My problem is there the cols of the table are
sid varchar2(10),
cob_dt varchar2(10),
deal_id varchar2(10),
new_val varchar2(10),
old_val varchar2(30),
amend_col v archar2(50),
i have return a proc
create or replace
[Code]...
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Jul 21, 2011
when we decribe one table structure, it shows the column name as below:
DUKEDMTS03DB01:SYS@TODS1> desc uet_rep.ECM_MAINTENANCE
Name Null? Type
----------------------------------------------------- -------- ------------------------------------
C1 NOT NULL VARCHAR2(15)
C2 VARCHAR2(254)
C3 NOT NULL NUMBER(15)
C4 VARCHAR2(254)
C5 NOT NULL VARCHAR2(254)
C6 NOT NULL NUMBER(15)
C7 NOT NULL NUMBER(15)
C8 NOT NULL VARCHAR2(254)
[Code]...
But, till yday it was showing the orignal column name..
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May 2, 2013
I am trying to build an array that contains known column names, 63 columns in all.The idea is to search backwards from 63 down to say 10 to find the first non-blank column.
Then using a loop with the known number of lines print from 1 to last non-blank column.The problem is that it only shows the column names and not the values of the columns.So I am getting 63 lines every time, instead of 20, 30, 40 or however how many fields actually have something.
Here is my
declare
to_num number;
field_name varchar2(15);
[code]....
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Oct 11, 2011
I wonder if there is any way to return the columns of an select with its letters lowercase?
I have a piece of code that creates an script wich returns an SQL result to be confronted with some templates. My template have the column names in lowercase and because It is case sensitive the Uppercase returned by Oracle,
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Jul 20, 2010
i have list item populated with many table names from a schema. i have grid in oracle forms 10g and i want to fill the grid with at least four/more columns.I want to fire the list change trigger when each time any one table name is selected.
how can i find the columns names dynamically for filling the grid.
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Apr 2, 2010
I'm writing a procedure that takes a table name as a parameter and I would like to print out the column name with the supporting row entry for each row. I know the logic I'd like to use, but how do you query the metadata to return the column names and store them.
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Mar 9, 2011
Query : select * from scott.dept where deptno=10;
Result
DEPTNO |DNAME |LOCATION
-------|----------|----------
10 |ACCOUNTING|NEW YORK
But i want the above resultset as below,
COL1 COL2
----------------------
DEPTNO | 10
DNAME | ACCOUNTING
LOCATION | NEW YORK
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Jul 25, 2013
I have the following piece of
CREATE OR REPLACE PROCEDURE COMP_RECORDS
IS
l_query VARCHAR2 (10000) := '';
CURSOR TBL1
IS
SELECT TABLE_NAME, COLUMN_NAME FROM COLS_TO_COMP WHERE TABLE_NAME='ACE_HIST';
TBL1_REC APP.COLS_TO_COMP%rowtype;
[Code]..
However I am getting an ORA-00923 exception with message as "FROM keyword not found where expected". know if I can/cannot use a cursor to fetch column names for a table?
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Jun 5, 2013
I have limited permissions and am unable to create temp tables.So I would like to use a cursor to "create" a table of sorts then access/query it. But this "table"/cursor would have no column names so how do I refer to the columns? Is there a way to refer to a column by column number rather than column name in a query:
select column1 from tablename where column2 = 'abc'?
Is there a way in a query/update/insert to refer to a column by column number rather than column name?
declare
cursor c1 is
select 'abc', '8-Apr-2013', pk_id from EMPLOYEE where pk_id = '153'
UNION
select '1xyz', '4-10-2013', pk_id from EMPLOYEE where pk_id = '154'
c1_val number;
[code]....
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Feb 8, 2013
I have a problem with Dynamic SQL.
I have written an SQL which will dynamically generate the Select statement with from and where clause in it.
But that select statement when executed will get me hundreds of rows and i want to insert each row separately into one more table.
For that i have used a ref cursor to open and insert the table.
In the select list the column names will also be as follows: COLUMN1, COLUMN2, COLUMN3,....COLUMNn
find below the sample code:
TYPE ref_csr IS REF CURSOR;
insert_csr ref_csr;
v_select VARCHAR2 (4000) := NULL;
v_table VARCHAR2 (4000) := NULL;
v_where VARCHAR2 (4000) := NULL;
v_ins_tab VARCHAR2 (4000) := NULL;
v_insert VARCHAR2 (4000) := NULL;
v_ins_query VARCHAR2 (4000) := NULL;
[Code]...
How to fetch the column names here
|| ');';
EXECUTE IMMEDIATE v_ins_query;
END LOOP;
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Jul 30, 2012
I need to rename only two names in column report_headings1. But in order for me to see all other names I need to use all of them in decode function. Is there an easier way to write this Select Statement.
select days_start, days_to,
decode(report_heading1,'31 Or More days', 'Future', '00 Dispute/Pend', 'Dispute or Pend', '1 to 30 Days', '1 to 30 Days',
'31 to 60 Days', '31 to 60 Days','61 to 90 Days', '61 to 90 Days', '91 Or More Days', '91 Or More Days' ) report_heading1, report_heading2, type
from ar_aging_bucket_lines lines, ar_aging_buckets buckets
where lines.aging_bucket_id = buckets.aging_bucket_id;
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Jun 15, 2012
I have 3 columns in a table: colX, colY, colZ.
Trying to find a way to prevent duplicates with these, but only if colX is not null.
For example, if there are already values for: colX = 1, colY = 1, colZ = 1
then:
Allowed: colX = null, colY = 1, colZ = 1
Not allowed: colX = 1, colY = 1, colZ = 1
I can't create a unique constraint on these columns because there are many null values for column colX, and as mentioned, when colX is null, colY and colZ can be any values.
I also tried using a before insert trigger to find duplicates before posting and raise an error if found, but this causes an ORA-04091 mutating error since the trigger in the table is referencing itself to check for duplicates.
Also, I know there is something called a function based index, but I cannot use those with my code, so I need another solution if possible.
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Feb 8, 2013
I have written an SQL which will dynamically generate the Select statement with from and where clause in it. But that select statement when executed will get me hundreds of rows and i want to insert each row separately into one more table.
For that i have used a ref cursor to open and insert the table.
In the select list the column names will also be as follows: COLUMN1, COLUMN2, COLUMN3,....COLUMNn
find below the sample
TYPE ref_csr IS REF CURSOR;
insert_csr ref_csr;
v_select VARCHAR2 (4000) := NULL;
[Code].....
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Aug 10, 2010
I am working on convertion of triggers from SQL SERVER to Oracle. I got them converted using a tool. But not sure how to correct the below trigger which uses '*' in sql server.
Code in SQL SERVER :-
CREATE TRIGGER INSERT_AUDIT ON T_AUDIT
FOR INSERT AS
INSERT INTO T_AUDIT_LOG
SELECT 'INSERT','AFTER', CURRENT_TIMESTAMP, NULL,*
FROM INSERTED
Converted into Oracle:-
CREATE OR REPLACE TRIGGER INSERT_AUDIT
BEFORE INSERT
ON T_AUDIT
FOR EACH ROW
INSERT INTO T_AUDIT_LOG
VALUES ( 'INSERT', 'AFTER', SYSTIMESTAMP, NULL, * );
END;
how can I remove the *. I tried replacing the * with the rest column names prefixing with :NEW.
the last 3 columns when are c_data1,c_data2,c_data3 as :-
INSERT INTO T_AUDIT_LOG
VALUES ( 'INSERT', 'AFTER',SYSTIMESTAMP NULL, :NEW.c_data1,:NEW.c_data2,:NEW.c_data3);
But this gives error:-
PLS-00049: bad bind variable 'NEW.C_DATA1'
PLS-00049: bad bind variable 'NEW.C_DATA2'
PLS-00049: bad bind variable 'NEW.C_DATA3'
how can I convert this code.
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Oct 6, 2012
I want to load query result into .xls file with column names by using plsql.
Like this i need to generate 4 files and zip it then send mail with attachement of that zip file.
Can we automate in PLSQL? If it is possible pls share the script.
Ex: select ename,eno,dept,deptno,sal,hiredate from employee;
ENAME ENO DEPT DEPTNO SAL HIREDATE like this we need to store the query result into .xls file.
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Dec 13, 2010
In the below code, do I need the 'NOT NULL' after the 'state char(2)'? I am guessing that I do not need it since I have the CHECK constraint on the column.
CREATE TABLE employee(
id PRIMARY KEY,
first varchar(20) NOT NULL,
middle varchar(20),
[code]....
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Nov 16, 2012
I want the output from two tables with rows to columns and generate dynamic basing on the columns.
For example: Table A (a1) , Table B(a1,b1)
Data: A B
------ ----
a1 a1 b1
--- ---- ----
1 1 x
2 1 y
3 2 a
2 b
2 c
o/p: Columnname col_1 col_2 col_3
-----------------------------------------------
a1 b1_1 b1_2 b1_3
----- ---------------------
1 x y
2 a b c
Columns should be generated based on the second table second column.
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Jul 3, 2011
is it possible to use the records returned by a query as column names in a select query.
select (select column_name from dba_tab_cols where table_name='V_$DATABASE' and column_name like '%CONTROL%')
from v$database;
*
ERROR at line 1:
ORA-01427: single-row subquery returns more than one row
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Apr 21, 2010
I have table customer which contains a column CUSTOMER_FIRST_NAME
CUSTOMER_FIRST_NAME VARCHAR2(50)
What will be sql statement to add a constraint on the CUSTOMER_FIRST_NAME column of the CUSTOMERS table so that the value inserted in the column does not have numbers ?
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