SQL删除自动命名的约束 [英] SQL remove autonamed constraints

问题描述

我使用脚本在表上创建了一些约束，但未指定约束名称。结果，我最终遇到了诸如 FK__DOC_OBGS ___ kntr ___ 54E63309 这样的约束。

I have created a few constraints on my table with a script without specifying the constraint name. As a result, I ended up having constraints like FK__DOC_OBGS___kntr___54E63309 for example.

是否可以在不指定确切约束名称的情况下删除该约束？

Is it possible to drop that constraints without specifying the exact constraint name ?

例如（不起作用）

ALTER TABLE DOC_OBGS_10 DROP CONSTRAINT LIKE 'FK__DOC_OBGS___kntr%'

问题是我们有很多带有此表的数据库，我需要从表中删除所有约束，但显然名称是每个表都不同。

The problem is that we have a lot of databases with this table and I need to remove all the constraints from the tables, but apparently the name is different for each table.

推荐答案

DECLARE @sql1 NVARCHAR(MAX);
SELECT @sql1 = c
FROM
(
    SELECT 'ALTER TABLE DOC_INVS_1 DROP CONSTRAINT ' + CONSTRAINT_NAME + '; '
    FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE TABLE_NAME = 'DOC_INVS_1'
    and CONSTRAINT_NAME LIKE 'FK__DOC_INVS___kntr%' 
) T(c);

EXEC(@sql1);

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