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Asked: 2026-06-12T23:50:57+00:00

I want to delete a Foreign Key Constraint from a table, but not sure

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I want to delete a Foreign Key Constraint from a table, but not sure which table is that. I just have this information. Please check the screenshot
enter image description here

I want to drop a table but its not allowing me to drop due to some FK constraints. Table I want to delete is ‘ZIP_Codes’

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1 Answer

  1. Editorial Team

    this query will give the Foreign key name and the referencing table name 

    SELECT CAST(F.NAME AS VARCHAR(255)) AS FOREIGN_KEY_NAME
, CAST(P.NAME AS VARCHAR(255)) AS PARENT_TABLE
FROM SYSOBJECTS F
INNER JOIN SYSREFERENCES R ON F.ID = R.CONSTID
INNER JOIN SYSOBJECTS P ON R.RKEYID = P.ID
INNER JOIN SYSCOLUMNS RC ON R.RKEYID = RC.ID AND R.RKEY1 = RC.COLID
WHERE F.TYPE = 'F'
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