I ran into this myself, but found this microscopic bit of text in the query language description:
(Note that column IDs in spreadsheets are always letters; the column > heading text shown in the published spreadsheet are labels, not IDs. You > must use the ID, not the label, in your query string.) So, while for OTHER sources of data, you might be able to use the first row as id's, you cannot do that with spreadsheets. See the text at the beginning of the first example for Setting the Query for the Data Source URL<https://developers.google.com/chart/interactive/docs/querylanguage#Setting_the_Query_in_the_Data_Source_URL> . https://developers.google.com/chart/interactive/docs/querylanguage#Setting_the_Query_in_the_Data_Source_URL -- You received this message because you are subscribed to the Google Groups "Google Visualization API" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-visualization-api. For more options, visit https://groups.google.com/d/optout.
