ODBC API

Connecting to Data Sources

SQLAllocEnv

SQLAllocConnect

SQLConnect

SQLDriverConnect
(Level 1 Extension)

SQLBrowseConnect
(Level 2 Extension)

Disconnecting from a Data Source

SQLDisconnect

SQLFreeConnect

SQLFreeEnv

Setting & Retrieving Connection Options

SQLSetConnectOption
(Level 1 Extension)

SQLGetConnectOption
(Level 1 Extension)

SQLSetStmtOption
(Level 1 Extension)

SQLGetStmtOption
(Level 1 Extension)

Obtaining Information about a Driver or Data Source

SQLGetFunctions
(Level 1 Extension)

SQLGetTypeInfo
(Level 1 Extension)

SQLGetInfo
(Level 1 Extension)

SQLDataSources
(Level 2 Extension)

SQLDrivers
(Level 2 Extension)

Preparing SQL Requests to be Executed Multiple Times

SQLAllocStmt

SQLPrepare

SQLBindParameter
(Level 1 Extension)

SQLParamOptions
(Level 2 Extension)

SQLGetCursorName

SQLSetCursorName

SQLSetScrollOptions
(Level 2 Extension)

Submitting SQL Requests

SQLExecute

SQLExecDirect

SQLNativeSQL
(Level 2 Extension)

SQLDescribeParam
(Level 2 Extension)

SQLNumParams
(Level 2 Extension)

SQLParamData
(Level 1 Extension)

SQLPutData
(Level 1 Extension)

Retrieving Results and Information about Results

SQLRowCount

SQLNumResultCols

SQLDescribeCol

SQLColAttributes

SQLBindCol

SQLFetch

SQLExtendedFetch
(Level 2 Extension)

SQLGetData
(Level 1 Extension)

SQLSetPos
(Level 2 Extension)

SQLMoreResults
(Level 2 Extension)

SQLError

Terminating a Statement

SQLFreeStmt

SQLCancel

SQLTransact

Obtaining information about the Data Source's system tables (catalog functions)

SQLColumnPrivileges
(Level 2 Extension)

SQLColumns
(Level 1 Extension)

SQLForeignKeys
(Level 2 Extension)

SQLPrimaryKeys
(Level 2 Extension)

SQLProcedureColumns
(Level 2 Extension)

SQLProcedures
(Level 2 Extension)

SQLSpecialColumns
(Level 1 Extension)

SQLStatistics
(Level 1 Extension)

SQLTablePrivileges
(Level 2 Extension)

SQLTables
(Level 1 Extension)

ODBC C API DEFINITION: SQLGetCursorName


Core

SQLGetCursorName returns the cursor name associated with a specified hstmt.

SyntaxRETCODE SQLGetCursorName(hstmt, szCursor, cbCursorMax, pcbCursor)

The SQLGetCursorName function accepts the following arguments.

Type

Argument

Use

Description

HSTMThstmtInputStatement handle.
UCHAR FAR *szCursorOutputPointer to storage for the cursor name.
SWORDcbCursorMaxInputLength of szCursor.
SWORD FAR *pcbCursorOutputTotal number of bytes (excluding the null termination byte) available to return in szCursor. If the number of bytes available to return is greater than or equal to cbCursorMax, the cursor name in szCursor is truncated to cbCursorMax - 1 bytes.
ReturnsSQL_SUCCESS, SQL_SUCCESS_WITH_INFO, SQL_ERROR or SQL_INVALID_HANDLE
Diagnostics

When SQLGetCursorName returns SQL_ERROR or SQL_SUCCESS_WITH_INFO, an associated SQLSTATE value may be obtained by calling SQLError. The following table lists the SQLSTATE values commonly returned by SQLGetCursorName and explains each one in the context of this function; the notation "(DM)" precedes the descriptions of SQLSTATEs returned by the Driver Manager. The return code associated with each SQLSTATE value is SQL_ERROR, unless noted otherwise.

SQLSTATE

Error

Description

01000General warningDriver-specific informational message. (Function returns SQL_SUCCESS_WITH_INFO.)
01004Data truncatedThe buffer szCursor was not large enough to return the entire connection string, so the connection string was truncated. The argument pcbCursor contains the length of the untruncated connection string. (Function returns SQL_SUCCESS_WITH_INFO.)
IM001Driver does not support this function(DM) The driver specified by the data source name does not support the function.
S1000General errorAn error occurred for which there was no specific SQLSTATE and for which no implementation-specific SQLSTATE was defined. The error message returned by SQLError in the argument szErrorMsg describes the error and its cause.
S1001Memory allocation failure(DM) The Driver Manager was unable to allocate memory for the connection handle. The driver was unable to allocate memory for the connection handle.
S1010Function sequence error(DM) An asynchronously executing function (not this one) was called for the hstmt and was still executing when this function was called.
(DM) SQLExecute, SQLExecDirect or SQLSetPos was called for the hstmt and returned SQL_NEED_DATA. This function was called before data was sent for all data-at-execution parameters or columns.
S1015No cursor name available(DM) Teere was no open cursor on the hstmt and no cursor name had been set with SQLSetCursorName.
S1090Invalid string or buffer length(DM) The value specified in the argument cbCursorMax was less than 0.
Comments

The only ODBC SQL statements that use a cursor name are positioned update and delete (for example, UPDATE table-name ...WHERE CURRENT OF cursor-name). If the application does not call SQLSetCursorName to define a cursor name, on execution of a SELECT statement the driver generates a name that begins with the letters SQL_CUR and does not exceed 18 characters in length.

SQLGetCursorName returns the name of a cursor regardless of whether the name was created explicitly or implicitly.

A cursor name that is set either explicitly or implicitly remains set until the hstmt with which it is associated is dropped, using SQLFreeStmt with the SQL_DROP option.

Code Example(future)
Related Functions
For information about

See

Executing an SQL statementSQLExecDirect
Executing a prepared SQL statementSQLExecute
Preparing a statement for executionSQLPrepare
Setting a cursor nameSQLSetCursorName
Setting cursor scrolling optionsSQLSetScrollOptions (extension)

ODBC Router

ODBC Router transparently makes all ODBC drivers on a central Windows Server useable by your network's Linux, Macintosh and Windows systems. Three years in the making, ODBC Router has saved its customers millions of dollars in DLL installation and ODBC support costs for less than the price of a new PC and a few minutes installation time. ODBC Router provides a low cost, turnkey database network with enterprise class IT support.

Ditching the ODBC Administrator Control Panel:

By linking your application with the free ODBC Router client-side SDK instead of the ODBC Driver Manager, the need for your end-users to deal with driver installation or an ODBC Control Panel is gone! We even provide a setup function your code may call to display a "network browser" that enables your customer to "find" their ODBC Router server on the network, then "choose" the exact database they want to work with and finally return to your application with a fully-formed ODBC connection-string that may be stored and passed back to SQLConnect or SQLDriverConnect anytime your user wants to initiate a connection that data source. No more walking your customers through the process of adding data sources to ODBC Control Panel or, in the case of non-Windows computers, no need to worry about whether or not a compatible third-party ODBC Driver Manager has been installed for use with your code. (Remember that ODBC Router supports Mac OS 9, Mac OS X, Linux and Windows.) If there ever are any client-side ODBC support issues, AugSoft can handle them directly with the customer freeing you to focus on the application.

ODBC or JDBC?

JDBC drivers launch a CPU-intensive virtual machine in the background on your machine, which is bad for shared servers and for battery powered laptops or entry level desktops (that typically have slow busses and drives). As the world shifted to laptops and shared servers, the whole "virtual machine" concept became a support nightmare and so these days good Java apps are compiled to run as native (not emulated) code. Java developers may use the operating system's native ODBC support from within the JDBC class library using the sun.jdbc.odbc.JdbcOdbcDriver driver with a URL as shown below.

jdbc:odbc:dsn[;key=value]*

Example:

jdbc:odbc:finance;UID=cfo;

IT techs may then complete the database connection on the Customer's machine using ODBC Router or the database vendor's official ODBC driver.

NOTE: By creating ODBC data sources with ODBC Router, your apps will enjoy native speed and database independent connections from either Java/C/C++/C#/ObjC or PHP/PERL/Python/Ruby/BASIC on Linux, Macintosh and Windows. Also be aware that using ODBC Router with the Mac platform is an especially good idea because database vendors have not kept their Mac drivers in sync with Windows and there are actual third-party vendors who wrap freeware and JDBC drivers inside of ODBC "shells" without warning their customers! This problem is of great concern to developers because fake drivers almost always fly past the IT guys who test with speed deamon desktops, but fail the enterprise when user laptops and iMacs take too long to run queries or slowly corrupt the database when they do. IT guys often chalk this up to "network problems" leaving users with poison drivers to avoid their database. ODBC Router addresses this issue by enabling official vendor supported Windows ODBC drivers (on a Windows Server) to be accessed from all platforms, network wide.

ODBC 3.x?

It's not here yet. Even in 2010, most ODBC drivers are ODBC 1.x and 2.x. The ODBC Driver Manager translates between 3.x and 2.x or 2.x and 1.x ODBC calls. Therefore, if you don't need UNICODE, it's a bad idea to use ODBC 3.x API calls. That said, UNICODE is a Good Thing and there are actually at least three databases that natively support it now, so look for 3.x to be here soon.

Need ODBC API Help?

We really know ODBC and we routinely provide code-level ODBC help to our customers. Our low cost ODBC Router systems are available now at our online store and if your site buys them, you may open a ticket to ask ODBC development questions --we offer both E-Mail and On-Call support options in seven of the G8's timezones! Be sure to test your ODBC Router and ask for any needed installation help before purchase because we aren't Fry's --no refunds please, our prices are too low for such nonsense and we're too busy supporting real Customers!

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