Greg,
2013/3/7 Greg Williamson <gwilliamso...@yahoo.com>:
>
>
> Graham --
(...)
> The colon (":") is not needed, just remove it. A pair of colons is used to
> indicate a cast of a value; off hand I am not coming up with any use of a
> colon in basic SQL.
This is psql-specific syntax; the colon should cause the value of the
psql variable 'content' to be interpreted; without it, the string
'content' would be inserted.
See:
http://www.postgresql.org/docs/current/interactive/app-psql.html#APP-PSQL-INTERPOLATION
Regards
Ian Barwick
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