ADOdb

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====== Feature Comparison Matrix ======
ADOdb features, by Database Type
<WRAP important>
Check that the 'Verified' column is checked before relying on information
</WRAP>
===== Driver Support =====
==== Tier 1 Support ====
Tier 1 Drivers are fully supported by members of the ADOdb project, and all contain the full feature list. New feature is available for all drivers on release of feature
==== Tier 2 Support ====
Tier 2 Drivers may not be supported by ADOdb project members, or may not contain features (in particular Data Dictionary feature). Drivers may be associated with deprecated or removed PHP drivers.
==== Compatibility ====
 
^                                                                                                                                                 ^ Access    ^ Firebird  ^ Frontbase Interbase  ^ IBM DB2                                                                     ^ Informix  ^ Microsoft SQL Server                      ^ MySQL                              ^ Netezza  ^ ODBC      ^ Oracle  ^ PostgreSQL  ^ SAP DB  ^ SQLite     ^
| Verified                                                                                                                                        |  No       |  No       |  No                  |  Yes                                                                        |  No       |  No                                       |  No                                |  No      |  No       |  No     |  No         |  No     |  No        |
| [[v5:reference:connection:createsequence|Sequences]]                                                                                            |           |           |  Yes                 |  Yes                                                                        |           | Yes((Emulated in Server 2008 and lower))  |  Emulated                          |          | Emulated  |  Yes    | Yes         |         |            |
| [[v5:reference:adodb_fetch_mode|ADODB_FETCH_BOTH]]                                                                                              |  No       |           |                      |  Yes                                                                        |           |  Yes                                      |  Yes                               |          |           |         |             |         |            |
| [[v5:reference:connection:starttrans|Transactions]]                                                                                             |  No       |  Yes      |  Yes                 |  Yes                                                                        |  Yes      |  Yes                                      |  Yes((Transactional Tables Only))  |  Yes     |  Yes      |  Yes    |  Yes        | Yes     | Yes        |
| [[v5:reference:connection:recordcount|Record Counting]]                                                                                         | Emulated  |           |                      |                                                                             |           |                                           |                                    |          |           |         |             |         |  Emulated  |
| [[v5:reference:connection:selectlimit|selectLimit()]]                                                                                           |           |           |                      |  Emulated((Native if query constructed so that TOP n records can be used))  |           |  Yes                                      |  Yes                               |          |           |  Yes    |             |         |            |
| [[v5:reference:connection:offsetdate|Date Offset Functions]]                                                                                    |  No       |           |                      |                                                                             |           |                                           |                                    |          |           |         |             |         |            |
| [[v5:dictionary:metatables|MetaTables Masking]]                                                                                                 |  No       |  No       |  No                  |  No                                                                         |  No       |  Yes                                      |  Yes                               |  Yes     |  Yes      |  Yes    |  Yes        |  Yes    |  Yes       |
| [[v5:reference:connection:rowlock|rowLock row locking]]                                                                                         |  No       |           |                      |                                                                             |           |                                           |                                    |          |           |         |             |         |            |
| [[v5:reference:connection:rowlock|rowLock column locking]]                                                                                      |  No       |           |                      |                                                                             |           |                                           |                                    |          |           |         |             |         |            |
| [[v5:reference:connection:setcharset|setCharSet]]((Superseded by [[v5:reference:connection:setconnectionparameter|setConnectionParameter()]]))  |  No       |  No       |  No                  |  No                                                                         |  No       |  No                                       |  Yes                               |  No      |  No       |  No     |  Yes        |  No     |  No        |
| [[v5:reference:connection:setconnectionparameter|setConnectionParameter()]]                                                                     |           |           |                      |  Yes                                                                        |           |  Yes                                      |  Yes                               |          |           |  Yes    |             |         |            |
| [[v5:reference:connection:blobdecode|Blob Handling]]                                                                                            |  No       |  No       |  No                  |  Yes                                                                        |  No       |  Yes                                      |  No                                |  No      |  No       |  No     |  No         |  No     |  No        |
| [[v5:reference:connection:preparesp|Stored Procedures]]                                                                                         |  No       |  No       |  No                  |  Yes                                                                        |  No       |  Yes                                      |  No                                |  No      |  No       |  Yes    |  No         |  No     |  No        |
| [[v5:performance:performance_index|Performance Monitoring]]                                                                                     |  No       |  No       |  No                  |  Yes                                                                        |  Yes      |  Yes                                      |  Yes                               |  No      |  No       |  Yes    |  Yes        |  No     |  No        |