query.keyExists()

Determines whether a specific column is present in a query.

query.keyExists( column=string )

Returns: Boolean

Argument Description
column
string, required

Key to be matched with the columns.

Examples

q = queryNew( "id,name","int,varchar");
q.addRow(4);
q.setCell("id", 1, 1);
q.setCell("id", 2, 2);
q.setCell("id", 3, 3);
q.setCell("id", 4, 4);
q.setCell("name", "one", 1);
q.setCell("name", "two", 2);
q.setCell("name", "three",3);
q.setCell("name", "four", 4);
dump(q);
writedump(q.keyExists("id"));
writedump(q.keyExists("name"));
writedump(q.keyExists("title"));

See also