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Error: "ORA-01861: literal does not match format string" When Using the DATE() Function With Oracle


Published: 23 Jan 2017
Last Modified Date: 22 Mar 2017

Issue

When using the DATE() function in a calculated field with an Oracle data source, the following error might occur:

ORA-01861: literal does not match format string

Environment

  • Tableau Desktop
  • Oracle

Resolution

Use the DATEPARSE() function instead of the DATE() function.

For example, if the DATE() calculation is 
DATE( STR ([Year]) + "-" + STR([Month]) + "-1" )

The matching DATEPARSE() calculation would be

​DATEPARSE("yyyy-mm-dd", (STR ([Year]) + "-" + STR([Month]) + "-1" ))

Cause

This error occurs when a literal is entered with a format string, but the length of such format string is not the same as the literal. This can sometimes occur in Tableau Desktop when using the DATE() function along with an Oracle database. 
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