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2023-01-12 01:59:59 | Re: stringtype=unspecified is null check problem (David G. Johnston)

foo as select $1::text is null; Right, just not explicitly like that or for every

2023-01-12 01:33:42 | Re: stringtype=unspecified is null check problem (Tom Lane)

foo as select $1 is null; ERROR: could not determine data type of parameter $1 The complained