An SQL postfix clause is positioned in the second position and will be appended to the SELECT statement, following the where clause.
The SQL postfix clause is most commonly used for clauses such as ORDER BY. The order of values should be in the same order as the fields.
When updating fields, if the incoming values match the type of field, the values will be cast as necessary.
For example, a value of import arcpy fc = 'c:/data/base.gdb/well' fields = ['WELL_YIELD', 'WELL_CLASS'] # Create update cursor for feature class with
Transact-SQL cursors are implemented on the server and are managed by Transact-SQL statements sent from the client to the server.
They may also be contained in batches, stored procedures, or triggers.
However, for faster performance and reliable field order, it is recommended that the list of fields be narrowed to only those that are actually needed. Additional information can be accessed using tokens (such as .
Operations in a relational database act on a complete set of rows.
For example, the set of rows returned by a SELECT statement consists of all the rows that satisfy the conditions in the WHERE clause of the statement.
An SQL prefix clause is positioned in the first position and will be inserted between the SELECT keyword and the SELECT COLUMN LIST.
The SQL prefix clause is most commonly used for clauses such as DISTINCT or ALL.