There is a really obnoxious feature in SQL Server called
QUOTED_IDENTIFIERS and I wanted to know more about it. In short, with the option set to
ON, which is not the default with the Linux client, everything works. Without it, some things magically fail. Microsoft claims the option is the
DEFAULT, and then they default-change it in their own default-client. With
SET QUOTED_IDENTIFIERS OFF;, this works,
CREATE TABLE f ( a int, b int, g AS (CASE WHEN a>b THEN a ELSE b END), l AS (CASE WHEN a>b THEN b ELSE a END), UNIQUE(a,b) );
SET QUOTED_IDENTIFIERS OFF;, this does not work,
CREATE TABLE f ( a int, b int, g AS (CASE WHEN a>b THEN a ELSE b END), l AS (CASE WHEN a>b THEN b ELSE a END), UNIQUE(g,l) );
I just want to know how
l are more of an identifier than
b, and how not supporting this syntax except when enabled by the client was a good or sensible idea? What exactly is this option doing?
I only ask because twice now I’ve been bitten by this,
- How do I ensure a relationship is commutative and unique?
- Getting errors when installing and using sp_blitz with
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