Method name changes to improve readability.

util/sqlgen/column_value.go

util/sqlgen/column_value_test.go

util/sqlgen/columns.go

util/sqlgen/columns_test.go

util/sqlgen/group_by.go

util/sqlgen/group_by_test.go

util/sqlgen/order_by.go

util/sqlgen/order_by_test.go

util/sqlgen/statement_test.go

util/sqlgen/where.go

util/sqlgen/where_test.go