FreeTDS User Guide: A Guide to Installing, Configuring, and Running FreeTDS
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# ct-lib API Implementation Summary

Sybase ct-lib documentation can be found online and in PDF form. [1]

Table 11-2. ct-lib API Implementation Summary

Category | Function | Status | Comments
--- | --- | --- | ---
(all) | ct_bind | OK | Bind server results to program variables.
(all) | ct_br_column |  | Retrieve information about a column generated by a browse mode select.
(all) | ct_br_table |  | Return information about browse mode tables.
(all) | ct_callback | OK | Install or retrieve a Client-Library callback routine.
(all) | ct_cancel | OK | Cancel a command or the results of a command.
(all) | ct_capability | OK | Set or retrieve a client/server capability.
(all) | ct_close | OK | Close a server connection.
(all) | ct_cmd_alloc | OK | Allocate a CS_COMMAND structure.
(all) | ct_cmd_drop | OK | Deallocate a CS_COMMAND structure.
(all) | ct_cmd_props | OK | Set or retrieve command structure properties. For use by applications that resend commands.
(all) | ct_command | OK | Initiate a language, package, RPC, message, or send-data command.
(all) | ct_compute_info | OK | Retrieve compute result information.
(all) | ct_con_alloc | OK | Allocate a CS_CONNECTION structure.
(all) | ct_con_drop | OK | Deallocate a CS_CONNECTION structure.
(all) | ct_con_props | OK | Set or retrieve connection structure properties.
(all) | ct_config | OK | Set or retrieve context properties.
(all) | ct_connect | OK | Connect to a server.
(all) | ct_cursor | OK | Initiate a Client-Library cursor command.
(all) | ct_data_info | OK | Define or retrieve a data I/O descriptor structure.
(all) | ct_debug |  | Manage debug library operations.
(all) | ct_describe | OK | Return a description of result data.
(all) | ct_diag | OK | Manage inline error handling.
(all) | ct_ds_dropobj |  | Release the memory associated with a directory object.
(all) | ct_ds_lookup |  | Initiate or cancel a directory lookup operation.
(all) | ct_ds_objinfo |  | Retrieve information associated with a directory object.
(all) | ct_dynamic | OK | Initiate a dynamic SQL command.
(all) | ct_dyndesc |  | Perform operations on a dynamic SQL descriptor area.
(all) | ct_dynsqlda |  | Operate on a SQLDA structure.
(all) | ct_exit | OK | Exit Client-Library.
(all) | ct_fetch | OK | Fetch result data.
(all) | ct_get_data | OK | Read a chunk of data from the server.
(all) | ct_getformat |  | Return the server user-defined format string associated with a result column.
(all) | ct_getloginfo |  | Transfer TDS login response information from a CS_CONNECTION structure to a newly allocated CS_LOGINFO structure.
(all) | ct_init | OK | Initialize Client-Library for an application context.
(all) | ct_keydata |  | Specify or extract the contents of a key column.
(all) | ct_labels |  | Define a security label or clear security labels for a connection.
(all) | ct_options | OK | Set, retrieve, or clear the values of server query-processing options.
(all) | ct_param | OK | Supply values for a server command's input parameters.
(all) | ct_poll | stub | Poll connections for asynchronous operation completions and registered procedure notifications.
(all) | ct_recvpassthru |  | Receive a TDS (Tabular Data Stream) packet from a server.
(all) | ct_remote_pwd |  | Define or clear passwords to be used for server-to-server connections.
(all) | ct_res_info | OK | Retrieve current result set or command information.
(all) | ct_results | OK | Set up result data to be processed.
(all) | ct_send | OK | Send a command to the server.
(all) | ct_send_data | OK | Send a chunk of text or image data to the server.
(all) | ct_sendpassthru |  | Send a Tabular Data Stream (TDS) packet to a server.
(all) | ct_setloginfo |  | Transfer TDS login response information from a CS_LOGINFO structure to a CS_CONNECTION structure.
(all) | ct_setparam | OK | Specify source variables from which ct_send reads input parameter values for a server command.
(all) | ct_wakeup |  | Call a connection's completion callback.
(all) | cs_calc |  | Perform an arithmetic operation on two operands.
(all) | cs_cmp |  | Compare two data values.
(all) | cs_config | partial | Set or retrieve CS-Library properties.
(all) | cs_conv_mult | stub | Retrieve the conversion multiplier for converting character data from one character set to another.
(all) | cs_convert | OK | Convert a data value from one datatype, locale, or format to another datatype, locale, or format.
(all) | cs_ctx_alloc | OK | Allocate a CS_CONTEXT structure.
(all) | cs_ctx_drop | OK | Deallocate a CS_CONTEXT structure.
(all) | cs_ctx_global | OK | Allocate or return a CS_CONTEXT structure.
(all) | cs_diag | OK | Manage inline error handling.
(all) | cs_dt_crack | OK | Convert a machine-readable datetime value into a user-accessible format.
(all) | cs_dt_info | stub | Set or retrieve language-specific datetime information.
(all) | cs_loc_alloc | OK | Allocate a CS_LOCALE structure.
(all) | cs_loc_drop | OK | Deallocate a CS_LOCALE structure.
(all) | cs_locale | partial | Load a CS_LOCALE structure with localization values or retrieve the locale name previously used to load a CS_LOCALE structure.
(all) | cs_manage_convert | stub | Install or retrieve a user-defined character set conversion routine.
(all) | cs_objects | stub | Save, retrieve, or clear objects and data associated with them.
(all) | cs_set_convert | stub | Install or retrieve a user-defined conversion routine.
(all) | cs_setnull | stub | Define a null substitution value to be used when binding or converting NULL data.
(all) | cs_strbuild | OK | Construct native language message strings.
(all) | cs_strcmp | stub | Compare two strings using a specified sort order.
(all) | cs_time | stub | Retrieve the current date and time.
(all) | cs_will_convert | OK | Indicate whether a specific datatype conversion is available in the Client/Server libraries.
(all) | blk_alloc | OK | Allocate a CS_BLKDESC structure.
(all) | blk_bind | OK | Bind a program variable and a database column.
(all) | blk_colval | stub | Server-side routine to obtain the column value from a formatted bulk copy row.
(all) | blk_default | stub | Retrieve a column's default value.
(all) | blk_describe | OK | Retrieve a description of a database column.
(all) | blk_done | OK | Mark a complete bulk copy operation or a complete bulk copy batch.
(all) | blk_drop | OK | Deallocate a CS_BLKDESC structure.
(all) | blk_getrow | stub | Server-side routine to retrieve and store a formatted bulk copy row.
(all) | blk_gettext | stub | Server-side routine to retrieve the text, image, sensitivity, or boundary portion of an incoming bulk copy formatted row.
(all) | blk_init | OK | Initiate a bulk copy operation.
(all) | blk_props | OK | Set or retrieve bulk descriptor structure properties.
(all) | blk_rowalloc | stub | Server-side routine to allocate space for a formatted bulk copy row.
(all) | blk_rowdrop | stub | Server-side routine to free space previously allocated for a formatted bulk copy row.
(all) | blk_rowxfer | OK | Transfer one or more rows during a bulk copy operation without specifying or receiving a row count.
(all) | blk_rowxfer_mult | OK | Transfer one or more rows during a bulk copy operation.
(all) | blk_sendrow | stub | Server-side routine to send a formatted bulk copy row obtained from blk_getrow.
(all) | blk_sendtext | stub | Server-side routine to send text, image, sensitivity, or boundary data in a formatted bulk copy row obtained from blk_sendtext.
(all) | blk_srvinit | stub | Server-side routine to copy descriptions of server table columns to the client, if required.
(all) | blk_textxfer | stub | Transfer a column's data in chunks during a bulk copy operation.

### Notes

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