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A query (any query) can return a maximum of 255 columns (fields). The crosstab wizard may limit you to 3 row headers (3 field columns) but. you can put in many more. There is not a way to change the maximum number of columns. You can. sub-divide the columns you want to return into two queries by.
The reason for the simplicity is that as far as clients are concerned queries ie SELECT queries, ie non data defining or data manipulation queries, whether on tables, views, or other queries return rows and columns of data, so PostgreSQL should be able to return a list of the column names and their data types.he reason for the simplicity is that as far as clients are concerned queries ie SELECT queries, ie non data defining or data manipulation queries, whether on tables, views, or other queries return rows and columns of data, so PostgreSQL should be able to return a list of the column names and their data types.