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sql:value

Sql Core4 Lua Commands

SYNOPSIS

value = query:value(columnindex)

DESCRIPTION

This function is used to retrieve the values returned by a SELECT statement. It can only return data if a SELECT statement has executed successfully and sql:next() has indicated that data is available.

The parameter columnindex indicates the column number within the result set, starting at 1. For example, if a SELECT statement looked like SELECT Name, Address, City FROM …, then column number 1 indicates the Name column, number 2 indicates the Address and number 3 indicates the City column.

RETURN VALUE

Returns the value requested. If there is no value available or the value is NULL, returns nil. There is no further error reporting.

SEE ALSO