Unique row in table based on two columns
I have table like shown below in MS Access
and as you can see line ID 9,10 are not unique based on the second and third column.
There is the realtionship
I want to figure out somehow that only unique row can be inserted to table based on the second and third column, is that possible ?
Any tips can be helpful.
Thanks.
database unique access
asked Nov 11 at 10:39
LYR
227
add a comment |
I have table like shown below in MS Access
and as you can see line ID 9,10 are not unique based on the second and third column.
There is the realtionship
I want to figure out somehow that only unique row can be inserted to table based on the second and third column, is that possible ?
Any tips can be helpful.
Thanks.
database unique access
asked Nov 11 at 10:39
LYR
227
add a comment |
I have table like shown below in MS Access
and as you can see line ID 9,10 are not unique based on the second and third column.
There is the realtionship
I want to figure out somehow that only unique row can be inserted to table based on the second and third column, is that possible ?
Any tips can be helpful.
Thanks.
database unique access
asked Nov 11 at 10:39
LYR
227
I have table like shown below in MS Access
and as you can see line ID 9,10 are not unique based on the second and third column.
There is the realtionship
I want to figure out somehow that only unique row can be inserted to table based on the second and third column, is that possible ?
Any tips can be helpful.
Thanks.
database unique access
database unique access
asked Nov 11 at 10:39
LYR
227
asked Nov 11 at 10:39
LYR
227
asked Nov 11 at 10:39
LYR
227
asked Nov 11 at 10:39
LYR
227
asked Nov 11 at 10:39
LYR
227
227
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
If I got it right, you should create a compound primary key based on the 3 columns.
Read this: https://support.office.com/en-us/article/add-or-change-a-table-s-primary-key-in-access-07b4a84b-0063-4d56-8b00-65f2975e4379
Take a look at: Set the primary key using fields you already have in Access
Attention to step 3.
As you data is text, be careful that user will select this by drop-down or radio buttons instead of typing in order to avoid duplicated rows by user mistyping.
answered Nov 11 at 10:56
RobertoOSantos
313
Hi, I have made the compund primary key, but I was still able to insert a non unique row.
– LYR
Nov 11 at 11:03
1
In this compound primary key do not include ID field. Please, trying again but be sure the ID field does not get a key symbol on it. Ok?
– RobertoOSantos
Nov 11 at 11:08
Yeah, now I got it. Works as I wanted to. Thanks mate :)
– LYR
Nov 11 at 11:19
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53247917%2funique-row-in-table-based-on-two-columns%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
If I got it right, you should create a compound primary key based on the 3 columns.
Read this: https://support.office.com/en-us/article/add-or-change-a-table-s-primary-key-in-access-07b4a84b-0063-4d56-8b00-65f2975e4379
Take a look at: Set the primary key using fields you already have in Access
Attention to step 3.
As you data is text, be careful that user will select this by drop-down or radio buttons instead of typing in order to avoid duplicated rows by user mistyping.
answered Nov 11 at 10:56
RobertoOSantos
313
Hi, I have made the compund primary key, but I was still able to insert a non unique row.
– LYR
Nov 11 at 11:03
1
In this compound primary key do not include ID field. Please, trying again but be sure the ID field does not get a key symbol on it. Ok?
– RobertoOSantos
Nov 11 at 11:08
Yeah, now I got it. Works as I wanted to. Thanks mate :)
– LYR
Nov 11 at 11:19
add a comment |
If I got it right, you should create a compound primary key based on the 3 columns.
Read this: https://support.office.com/en-us/article/add-or-change-a-table-s-primary-key-in-access-07b4a84b-0063-4d56-8b00-65f2975e4379
Take a look at: Set the primary key using fields you already have in Access
Attention to step 3.
As you data is text, be careful that user will select this by drop-down or radio buttons instead of typing in order to avoid duplicated rows by user mistyping.
answered Nov 11 at 10:56
RobertoOSantos
313
Hi, I have made the compund primary key, but I was still able to insert a non unique row.
– LYR
Nov 11 at 11:03
1
In this compound primary key do not include ID field. Please, trying again but be sure the ID field does not get a key symbol on it. Ok?
– RobertoOSantos
Nov 11 at 11:08
Yeah, now I got it. Works as I wanted to. Thanks mate :)
– LYR
Nov 11 at 11:19
add a comment |
If I got it right, you should create a compound primary key based on the 3 columns.
Read this: https://support.office.com/en-us/article/add-or-change-a-table-s-primary-key-in-access-07b4a84b-0063-4d56-8b00-65f2975e4379
Take a look at: Set the primary key using fields you already have in Access
Attention to step 3.
As you data is text, be careful that user will select this by drop-down or radio buttons instead of typing in order to avoid duplicated rows by user mistyping.
answered Nov 11 at 10:56
RobertoOSantos
313
If I got it right, you should create a compound primary key based on the 3 columns.
Read this: https://support.office.com/en-us/article/add-or-change-a-table-s-primary-key-in-access-07b4a84b-0063-4d56-8b00-65f2975e4379
Take a look at: Set the primary key using fields you already have in Access
Attention to step 3.
As you data is text, be careful that user will select this by drop-down or radio buttons instead of typing in order to avoid duplicated rows by user mistyping.
answered Nov 11 at 10:56
RobertoOSantos
313
answered Nov 11 at 10:56
RobertoOSantos
313
answered Nov 11 at 10:56
RobertoOSantos
313
answered Nov 11 at 10:56
RobertoOSantos
313
313
Hi, I have made the compund primary key, but I was still able to insert a non unique row.
– LYR
Nov 11 at 11:03
1
In this compound primary key do not include ID field. Please, trying again but be sure the ID field does not get a key symbol on it. Ok?
– RobertoOSantos
Nov 11 at 11:08
Yeah, now I got it. Works as I wanted to. Thanks mate :)
– LYR
Nov 11 at 11:19
add a comment |
Hi, I have made the compund primary key, but I was still able to insert a non unique row.
– LYR
Nov 11 at 11:03
1
In this compound primary key do not include ID field. Please, trying again but be sure the ID field does not get a key symbol on it. Ok?
– RobertoOSantos
Nov 11 at 11:08
Yeah, now I got it. Works as I wanted to. Thanks mate :)
– LYR
Nov 11 at 11:19
Hi, I have made the compund primary key, but I was still able to insert a non unique row.
– LYR
Nov 11 at 11:03
Hi, I have made the compund primary key, but I was still able to insert a non unique row.
– LYR
Nov 11 at 11:03
1
1
In this compound primary key do not include ID field. Please, trying again but be sure the ID field does not get a key symbol on it. Ok?
– RobertoOSantos
Nov 11 at 11:08
In this compound primary key do not include ID field. Please, trying again but be sure the ID field does not get a key symbol on it. Ok?
– RobertoOSantos
Nov 11 at 11:08
Yeah, now I got it. Works as I wanted to. Thanks mate :)
– LYR
Nov 11 at 11:19
Yeah, now I got it. Works as I wanted to. Thanks mate :)
– LYR
Nov 11 at 11:19
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Some of your past answers have not been well-received, and you're in danger of being blocked from answering.
Please pay close attention to the following guidance:
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53247917%2funique-row-in-table-based-on-two-columns%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
