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In such scenario&#x27;s, new records can be created in NocoDB for this table, but records can&#x27;t be updated or deleted <!-- -->[as there is now way for NocoDB to uniquely identify these records]</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="example--primary-key--optional-system-fields-during-new-table-creation">Example : Primary Key &amp; optional system fields during new table creation<a href="#example--primary-key--optional-system-fields-during-new-table-creation" class="hash-link" aria-label="Direct link to Example : Primary Key &amp; optional system fields during new table creation" title="Direct link to Example : Primary Key &amp; optional system fields during new table creation">​</a></h4><img loading="lazy" width="596" alt="image" src="https://user-images.githubusercontent.com/35857179/189113679-481bceab-8957-4c5d-a38c-9940f03cfd7e.png" class="img_ev3q"><h4 class="anchor anchorWithStickyNavbar_LWe7" id="example--show-system-fields">Example : Show System Fields<a href="#example--show-system-fields" class="hash-link" aria-label="Direct link to Example : Show System Fields" title="Direct link to Example : Show System Fields">​</a></h4><img loading="lazy" width="309" alt="image" src="https://user-images.githubusercontent.com/35857179/189113907-871f7ab0-9bb2-4f04-a726-2d9feb56892e.png" class="img_ev3q"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="can-i-change-the-primary-key-to-another-column-within-tables-">Can I change the Primary Key to another column within tables ?<a href="#can-i-change-the-primary-key-to-another-column-within-tables-" class="hash-link" aria-label="Direct link to Can I change the Primary Key to another column within tables ?" title="Direct link to Can I change the Primary Key to another column within tables ?">​</a></h2><ul><li>You can&#x27;t update Primary Key from NocoDB UI. You can reconfigure it at database level directly &amp; trigger <code>meta sync</code> explicitly.</li></ul></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/nocodb/nocodb/tree/develop/packages/noco-docs/docs/versioned_docs/version-0.109.7/030.setup-and-usages/100.primary-key.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_vwxv"></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/0.109.7/setup-and-usages/formulas"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Formulas</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/0.109.7/setup-and-usages/display-value"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Display Value</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#what-is-a-primary-key-" class="table-of-contents__link toc-highlight">What is a Primary Key ?</a></li><li><a href="#what-is-the-use-of-primary-key-" class="table-of-contents__link toc-highlight">What is the use of Primary Key ?</a></li><li><a href="#primary-key-in-nocodb" class="table-of-contents__link toc-highlight">Primary Key in NocoDB</a></li><li><a href="#what-if-primary-key-was-missing" class="table-of-contents__link toc-highlight">What if Primary Key was missing?</a></li><li><a href="#can-i-change-the-primary-key-to-another-column-within-tables-" class="table-of-contents__link toc-highlight">Can I change the Primary Key to another column within tables ?</a></li></ul></div></div></div></div></main></div></div><footer class
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