sql - timestamp() do not take function parameter as input? -

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I am using sql in postgresql 

  cast (timestamp ($ 1) / Code>  
 This error returns the parameter around  
 When I give a straight line, SQL works:  
 < Code> cast (call as timestamp (1))  
 
 does not take timestamp function parameter?

This is a part of the name type and should not be parameterized in plain SQL Could. This is not a function, even though the syntax looks similar to the bracket.

You will need dynamic SQL for this. The statement in the form of a string in the PL / PGSLL function is created and runs it with the EXECUTE . Something like this:

EXECUTE 'SELECT col :: timestamp (' $ 1 || ') in' my_var;

$ 1 type integer is happening. There is no string type like text , or you have the possible SQL injection hole.


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