The following options allow you to make SQL Anywhere behavior compatible with Adaptive Server Enterprise, or to support both old behavior and allow ISO SQL/2003 behavior.
For further compatibility with Adaptive Server Enterprise, some of these options can be set for the duration of the current connection using the Transact-SQL SET statement instead of the SQL Anywhere SET OPTION statement. See SET statement [T-SQL].
The default setting for some of these options differs from the Adaptive Server Enterprise default setting. To ensure compatibility across your SQL Anywhere and Adaptive Server Enterprise databases, you should explicitly set each of the compatibility options listed in this section.
When a connection is made using the Open Client or JDBC interfaces, some option settings are explicitly set for the current connection to be compatible with Adaptive Server Enterprise. These options are listed in the following table.
The following table lists the compatibility options, their allowed values, and their default settings.
| Option | Values | Default |
| allow_nulls_by_default option [compatibility] | On, Off | On |
| ansi_blanks option [compatibility] | On, Off | Off |
| ansi_close_cursors_on_rollback option [compatibility] | On, Off | Off |
| ansi_integer_overflow option [compatibility] | On, Off | On |
| ansi_permissions option [compatibility] | On, Off | On |
| ansi_substring option [compatibility] | On, Off | On |
| ansi_update_constraints option [compatibility] | Off, Cursors, Strict | Cursors |
| ansinull option [compatibility] | On, Off | On |
| automatic_timestamp option [compatibility] | On, Off | Off |
| chained option [compatibility] | On, Off | On |
| close_on_endtrans option [compatibility] | On, Off | On |
| continue_after_raiserror option [compatibility] | On, Off | On |
| conversion_error option [compatibility] | On, Off | On |
| date_format option [compatibility] | String | YYYY-MM-DD |
| date_order option [compatibility] | MDY, YMD, DMY | YMD |
| divide_by_zero_error option [compatibility] | On, Off | On |
| escape_character option [compatibility] | Reserved | Reserved |
| fire_triggers option [compatibility] | On, Off | On |
| float_as_double option [compatibility] | On, Off | Off |
| isolation_level option [compatibility] | 0, 1, 2, 3 | 0 |
| nearest_century option [compatibility] | Integer (between 0 and 100 inclusive) | 50 |
| non_keywords option [compatibility] | String (Comma-separated keywords list) | Empty string (No keywords turned off) |
| on_tsql_error option [compatibility] | Stop, Conditional, Continue | Conditional |
| optimistic_wait_for_commit option [compatibility] | On, Off | Off |
| percent_as_comment option [compatibility] | On, Off | On |
| query_plan_on_open option [compatibility] | On, Off | Off |
| quoted_identifier option [compatibility] | On, Off | On |
| ri_trigger_time option [compatibility] | Before, After | After |
| sql_flagger_error_level option [compatibility] | Off, SQL:1992/Entry, SQL:1992/Intermediate, SQL:1992/Full, SQL:1999/Core, SQL:1999/Package, SQL:2003/Core, SQL:2003/Package, Ultralite | Off |
| sql_flagger_warning_level option [compatibility] | Off, SQL:1992/Entry, SQL:1992/Intermediate, SQL:1992/Full, SQL:1999/Core, SQL:1999/Package, SQL:2003/Core, SQL:2003/Package, Ultralite | Off |
| string_rtruncation option [compatibility] | On, Off | On |
| time_format option [compatibility] | String | HH:NN:SS.SSS |
| timestamp_format option [compatibility] | String | YYYY-MM-DD HH:NN:SS.SSS |
| tsql_hex_constant option [compatibility] | On, Off | On |
| tsql_outer_joins option [compatibility] | On, Off | Off |
| tsql_variables option [compatibility] | On, Off | Off |
