modify the check constraint

Similar Questions

• How to use current date in the check constraint

  Hello
  You could help me with this?

  create table 
  test_1 (
  xxx number (1),
  yyy number(1), 
  zzz number(1), 
  sss date check (sss < .......));

  Thanks in advance for your help

  Chanchal Wankhade wrote:
  Hello

  SQL> create table table_name (id number, tdate date check (jdate < sysdate));
  create table table_name (id number, tdate date check (jdate < sysdate))
  *
  ERROR at line 1:
  ORA-02438: Column check constraint cannot reference other columns
  

  There are some workaround solutions...

  And to add, that your mistake here is different - you're talking about another column JDATE (typo..?) in the check constraint... The actual column name is ADATE... :)

  Published by: JAC on December 5, 2012 19:15

• Issue by creating the Check constraint

  Hi Experts,

  I have obligation to create a check on a column constraint (Number (6.2)) is where in the max value must be less than 4000.

  But the column already has the data of more than 4000. Also, I can't delete the data that is already present in the table.

  I'm just using an alter command

  SQL > alter table test add check constraint CC_A (an < 4000);

  Error is:

  SQL error: ORA-02293: cannot validate (CC_A) - violated check constraint

  02293 00000 - "can't validate (s.%s) - violated check constraint.

  * Cause: an alter table operation tried to validate a check constraint to

  populated table that has nocomplying values.

  Can you suggest me work around him?

  Kind regards

  RV

  Hello

  RV says:

  Hi Experts,

  I have obligation to create a check on a column constraint (Number (6.2)) is where in the max value must be less than 4000.

  But the column already has the data of more than 4000. Also, I can't delete the data that is already present in the table.

  I'm just using an alter command

  SQL > alter table test add constraint CC_A (one check<>

  Error is:

  SQL error: ORA-02293: cannot validate (CC_A) - violated check constraint

  02293 00000 - "can't validate (s.%s) - violated check constraint.

  * Cause: an alter table operation tried to validate a check constraint to

  populated table that has nocomplying values.

  Can you suggest me work around him?

  Kind regards

  RV

  You can specify NOVALIDATE ACTIVATE when you create the constraint.

  ALTER TABLE test

  ADD CONSTRAINT cc_a CHECK (one<>

  ENABLE NOVALIDATE

  ;

  The constraint does not apply to the values already in the table, but if you update a column where the condition is violated, the constraint applies to the new value.

• Problem in creating the CHECK constraint

  When creating a table, I want to apply a CHECK constraint, that pension_amount must be in accordance with pension_code, I get the below error.

  CREATE TABLE pension_amount_check
  (
     pension_amount         NUMBER (4),
     pension_code   NUMBER (1),
     CONSTRAINT amount_chk CHECK
        (CASE
            WHEN pension_code = 1 THEN (pension_amount = 3000 OR pension_amount > 3000)
            WHEN pension_code = 2 THEN pension_amount = 1500
         end)
  )

  ORA-00907: missing right parenthesis

  How I can solve this problem.

  Hello

  So you cann which adds another.

  CREATE TABLE PENSION_AMOUNT_CHECK
  (
    PENSION_AMOUNT  NUMBER(4),
    PENSION_CODE    NUMBER(1)
  )
  /
  
  ALTER TABLE PENSION_AMOUNT_CHECK ADD (
    CONSTRAINT SSSSSS
    CHECK (((pension_code =1) AND  (pension_amount = 3000 OR pension_amount > 3000)) OR (  (pension_code =1)  AND  pension_amount = 1500))  ENABLE NOVALIDATE)
  /
  

  * If the answer is correct, then mark it as a good answer

• You will need to validate the format of the time 24 hours with the check constraint.

  Hello

  I need to validate a field in a table with 24 h format. I created forced bellows, but not validating the only of numbers. Pls help me on this.

  ALTER TABLE ADD RESERVATION

  CONSTRAINT CNST_CHK_VB_ACT

  CHECK (regexp_like (law on the ' [[: digit:]] {4}'))

  ENABLE

  NOVALIDATE;

  Rgds,

  Athuru Mithuru.

  Hi, Athuru,

  Athurumithuru wrote:

  Hello

  I need to validate a field in a table with 24 h format. I created forced bellows, but not validating the only of numbers. Pls help me on this.

  ALTER TABLE ADD RESERVATION

  CONSTRAINT CNST_CHK_VB_ACT

  CHECK (regexp_like (law on the ' [[: digit:]] {4}'))

  ENABLE

  NOVALIDATE;

  Rgds,

  Athuru Mithuru.

  Let's start by defining precisely what you want.  For example

  1. The 1st character can be 0, 1, or 2.
  2. The 2nd character can be any number EXCEPT if the 1st character is '2', then the 2nd character must be in the range ' 0 'to 3'.
  3. The 3rd character can be '0' and '5'
  4. The 4th character can be any digit.

  It's pretty simple code like a regular expression with the exception of the exception in the 2.   Here's a way to get around that:

  REGEXP_LIKE (law on the)

  , ' (' || -options for the first 2 digits of start

  "([01][0-9])' |" --0 or 1, followed by another digit

  '| (2[0-3])'    || -2 followed by 0, 1, 2 or 3

  ')'              || -end of the options for the first 2 digits

  '[0-5]'          || -any digit between 0 and 5

  '[0-9]' - a figure

  )

  As others have said, think about the type of data.  How will you use this column?  If you really need a column which reflects a time of day, but not special, then perhaps an INTERVAL, or a NUMBER (for example, the number of hours after midnight) rather than a string.

• Addition of the Check constraint, while avoiding checking data existsing

  Dear Sir
  
  Is there an option in oracle for verification of transmissions to avoid checking existing data?
  
  For example: Emp incudes data in table, the table are changed as follows:
  
  change the emp table add constraint emp_ck2 check (salary > 2500);
  
  Wages in the table has values less than 2500, so of course, I get an error...
  
  Is it possible to prevent checking of existing data? and the constraint should apply only to the newly added data?
  
  [Note that I thing there is something similar in T - SQL is called WITH No. CHECK, but donno on Oracle]
  
  The comments appreciated.
  
  Thank you very much...

  NOVALIDATE?

  alter table emp add constraint emp_ck2 check (sal > 2500) novalidate ;
  

  Refer to the manual

  Published by: JAC on January 31, 2013 17:00

• Several multiple conditions can be given in the check constraint

  Hello
  
  I am agent table where the city and the commission is there. When inserting records, I need to apply a rule that if the city is London commission cannot be less than 300. Can it be done using validation constraints? I was able to do so using PL/SQL. I just want to know if it could be done using validation constraints. If so, then need please the syntax.

  Try like this

  create table test1
  (varchar2 (100) of the city)
  Commission number,
  check test_name forced ((ville = 'London' et commission > = 300) or city! = 'London'));

• Understand the Check constraint

  CREATE TABLE sample_table

  (

  Id1 NUMBER CHECK (id1 > 9),

  Name1 VARCHAR2 (10)

  )

  INSERT INTO sample_table

  VALUES (11, 'Name')

  Inserted successfully

  INSERT INTO sample_table

  VALUES('','Name')

  How did the last insert statement gives me error.

  I mean > 9 Null is not true or is it?

  The columns you stated is also null-able, try this

  CREATE TABLE sample_table

  (

  Id1 NUMBER CHECK (id1 > 9) not null,

  Name1 VARCHAR2 (10)

  )

• DDL generation gets the CHECK constraint on each column in each table

  I'm exporting to the DDL and get:
  CHECK (phone_type ('FAX', 'HOTLINE', 'CONSUMPTION', 'PRIMARY', 'TTY_TDD')
  On EACH column of EACH table.
  Even in PHONE_TYPE column in the FACILITY_TELEPHONE_NUMBERS table, I deleted the list of values - I think I'll create a lookup table instead.
  
  Anyone have this happen to them? What do you have on this?

  You must edit the defaultdomains.xml file in the datamodeler\datamodeler\types directory.

  You should look for something similar in the definition of 'unknown ': domain

  remove it.

  Philippe

• Get a NAMED check constraint when the entity attribute derived from the field

  I'm designing a new database and beginning with a logic model of the ER. I've defined several areas, such as the NO_YES field (with values of ' no and 'Y'). When I use this area as a data type of an attribute of the entity (for example, the CHANGE_REQUEST.IS_APPROVED attribute), I also specify a constraint name (for example, CR_APPROVED_CK) of the attribute (this is done in the Group of constraint, property name constraint and the properties of the attribute dialog box, default value).
  
  When I have the logic model to a relational model of the engineer, the constraint name is lost. Specifically, for the definition of the table that is created, for the column in question, in the default column properties and constraints Panel dialog box, the name of constraint property is empty. When I generated the DDL of the relational model, the check constraint that is generated is an inline check constraint (such as ' IS_APPROVED VARCHAR2 (1) CHECK (IS_APPROVED IN ('n', 'Y')) '). When this DDL is executed to generate database objects, the created check constraint has a system-generated name. I want the constraint to have a name that I create.
  
  By experimentation, I found that in the relational model, if I specify a value for the property name of the constraint in the DOF resulting constraint get named (an ALTER TABLE statement is generated that contains "ADD CONSTRAINT CR_APPROVED_CK CHECK (IS_APPROVED IN ('n', 'Y'))"). However, I have redundantly change the relational model in the same way that I edited the logic model to specify the constraint names.
  
  Is there a way to guarantee that the constraint names defined in a logic model transferred during the engineering of a logic model to a physical model.
  
  The version of the Data Modeler I use is 3.0.0.665.

  Is there a way to guarantee that the constraint names defined in a logic model transferred during the engineering of a logic model to a physical model.

  There is ' compare/copy options' tab in the technical dialogue - clear the checkbox "do not apply to new objects.

  Philippe

• problem with check constraint

  Hi, could someone help me solve a problem with the check constraint.

  CREATE TABLE RMD_2

  (

  NUMBER (10,0) "RMD_ID."

  "ABB" VARCHAR2 (16 BYTE),

  "act_ind CHAR (1 BYTE)

  )

  ALTER TABLE SYSADM. CONTRACT_DATA_EXCHANGE ADD CONSTRAINT 'RMD_2_C1 '.

  CHECK)

  act_ind IN('P','T',)

  )

  SQL > insert

  2 in rmd_2

  3 values(1,'A','X')

  4.

  Insert

  *

  ERROR on line 1:

  ORA-02290: check constraint (RMD_2_C1) violated

  SQL > insert

  2 in rmd_2

  3 values(1,'A','N')

  4.

  1 line of creation.

  SQL > insert

  2 in rmd_2

  3 values(1,'A',)

  4.

  1 line of creation.

  SQL > insert

  so I don't understand why the N value is accepted

  User235910 wrote:

  Hi, could someone help me solve a problem with the check constraint.

  CREATE TABLE RMD_2

  (

  NUMBER (10,0) "RMD_ID."

  "ABB" VARCHAR2 (16 BYTE),

  "act_ind CHAR (1 BYTE)

  )

  ALTER TABLE SYSADM. CONTRACT_DATA_EXCHANGE ADD CONSTRAINT 'RMD_2_C1 '.

  CHECK)

  act_ind IN('P','T',)

  )

  SQL > insert

  2 in rmd_2

  3 values(1,'A','X')

  4.

  Insert

  *

  ERROR on line 1:

  ORA-02290: check constraint (RMD_2_C1) violated

  SQL > insert

  2 in rmd_2

  3 values(1,'A','N')

  4.

  1 line of creation.

  SQL > insert

  2 in rmd_2

  3 values(1,'A',)

  4.

  1 line of creation.

  SQL > insert

  so I don't understand why the N value is accepted

  the posted CONSTRAINT is not on the table RMD_2, but on table SYSADM. CONTRACT_DATA_EXCHANGE

• CHECK constraint

  Hello experts,

  I am new to oracle using sql developer in windows 7.i have a problem in which I must first make two tables:

  Tbl_State (S_Id, S_Name, Country_Id)

  and

  tbl_City (C_Id, C_Name, State_Id)

  .

  I have to add a constraint to the tbl_city table so that it can accept only State_Id column values that are exist in the S_Id column in tbl_state. In that I tried to add a sub to mach check constraint query the values of tbl_state. S_Id but I think that Oracle sql does not query sub in the check constraint. Give me a suggestion how to fix this problem.

  Thnak you

  regrads

  Aditya

  Hello, Solomon,

  I forgot to ask the OP to do first the column Tbl_state in the table as the primary key.

• Distinguish NOT NULL constraints Check constraints

  Join user_constraints to user_cons_columns for constraint_type = 'C' indicates the Check constraints, and NOT NULL constraints, but also (because those are implemented as Check constraints).
  
  My question is how to filter constraints NOT NULL to let only the 'normal Check constraints '?
  
  I tried WHERE SUBSTR(search_condition,-12,12) & LT; & GT; 'IS NOT NULL '.
  but as search_condition is of type LONG, I can't use substring.
  
  Has anyone already found it? Thank you!!

  ByronBarton wrote:

  Has anyone already found it?

  Well, there is no easy way. Simple, if you always create named* validation constraints. If so, online NOT NULL constraint will get name generated and forced check no:

  SQL> create table test_tbl(
    2                        c1 number not null,
    3                        c2 number,
    4                        constraint test_tbl_chk1
    5                          check(
    6                                c2 is not null
    7                               )
    8                       )
    9  /
  
  Table created.
  
  SQL> select  constraint_name,
    2          generated
    3    from  user_constraints
    4    where table_name = 'TEST_TBL'
    5  /
  
  CONSTRAINT_NAME                GENERATED
  ------------------------------ --------------
  SYS_C008666                    GENERATED NAME
  TEST_TBL_CHK1                  USER NAME
  
  SQL> 
  

  However, if the check constraint is not named we:

  SQL> create table test_tbl(
    2                        c1 number not null,
    3                        c2 number,
    4                        check(
    5                              c2 is not null
    6                             )
    7                       )
    8  /
  
  Table created.
  
  SQL> select  constraint_name,
    2          generated
    3    from  user_constraints
    4    where table_name = 'TEST_TBL'
    5  /
  
  CONSTRAINT_NAME                GENERATED
  ------------------------------ --------------
  SYS_C008668                    GENERATED NAME
  SYS_C008669                    GENERATED NAME
  
  SQL> 
  

  Then, the only way I know is:

  SQL> column owner format a10
  SQL> column table_name format a10
  SQL> column column_name format a10
  SQL> select  u.name owner,
    2          t.name table_name,
    3          a.name column_name,
    4          c.name constraint_name,
    5          decode(k.type#,7,'NOT NULL',1,'CHECK CONSTRAINT','UNKNOWN') type
    6    from  sys.USER$ u,
    7          sys.CON$  c,
    8          sys.CDEF$ k,
    9          sys.OBJ$ t,
   10          sys.COL$ a,
   11          sys.CCOL$ r
   12    where u.name   = user
   13      and c.owner# = u.user#
   14      and k.con#   = c.con#
   15      and t.obj#   = k.obj#
   16      and t.name   = 'TEST_TBL'
   17      and a.obj#   = t.obj#
   18      and r.col#   = a.col#
   19      and r.con#   = k.con#
   20      and r.obj# = k.obj#
   21  /
  
  OWNER      TABLE_NAME COLUMN_NAM CONSTRAINT_NAME                TYPE
  ---------- ---------- ---------- ------------------------------ ----------------
  SCOTT      TEST_TBL   C1         SYS_C008668                    NOT NULL
  SCOTT      TEST_TBL   C2         SYS_C008669                    CHECK CONSTRAINT
  
  SQL> 
  

  SY.

• How to get the a table check constraint.

  I don't see the function to get forced check.
  I try the table.getCheckConstraints () function
  but I return nothing.

  Hello

  table.getCheckConstraints () will return to check the constraints defined at the Table level in the Data Modeler.

  You can also call column.getCheck (). This will return a check constraint defined on a column object in the Data Modeler.

  David

• Create the table using check constraints

  I am trying to create a table with the following sql statement.
  
  CREATE TABLE suppliers
  (
  supplier_id NULL NUMERIC (4).
  supplier_name NULL VARCHAR2 (50).
  Date1 DATE NULL,.
  date2 DATE NULL CONSTRAINT CHECK check_date (date1 > date2)
  );
  
  
  I am gettign the following error
  
  "ORA-02438: column check constraint cannot reference other columns.
  
  How can I get this red using a trigger.
  Help, please

  Simply, you missed a comma after your last column and constraint.

  ME_XE?CREATE TABLE suppliers
    2  (
    3  supplier_id NUMERIC(4) NULL ,
    4  supplier_name VARCHAR2(50) NULL ,
    5  date1 DATE NULL ,
    6  date2 DATE NULL ,
    7  CONSTRAINT check_date CHECK (date1 > date2)
    8  );
  
  Table created.
  
  Elapsed: 00:00:00.04