Comments - SET Variable statement
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CASTonly supports a limited number of data types,
VARCHARis not one of them. Please see CAST and CONVERT for more details.
looks like the documentation needs to be corrected
Clearly shows SET @str = CAST(123 AS VARCHAR(5)); in the docs.
Apparently it was only meant to demonstrate what
SETstatement looks like, but yes, it was a particularly unfortunate example. I have fixed it now, thanks for noticing.
you wouldn't happen to know the correct syntax for the following:
SET @dbname = 'name'; drop database if exists @dname;
First line works but second doesn't know what @dbname is.
You need prepared statements to pull it off. Something like