Developing Database Drivers for AOLserver -- Ns_PdDbExec

### Ns_PdDbExec

#### Overview

Execute a SQL query

#### Syntax

        void Ns_PdDbExec(char *handle, char *sql);

#### Description

This function executes a SQL query. If the SQL is executed successfully, this function should call Ns_PdSendString with OK_STATUS followed by either Ns_PdSendString(EXEC_RET_ROWS) or Ns_PdSendString(EXEC_RET_DML), depending on whether the SQL returned rows or was a DML statement. On failure, the function should use Ns_PdSendException to return an error.

#### Psuedo-code Example

        /* Things italicized would be your DBMS-specific structures and
    calls. */
        void
        Ns_PdDbExec(void *handle, char *sql)
        {
            DBMSState       *state = (DBMSState *) handle;
            int             execRet;
            Ns_PdLog(Trace, "exec(%s):", sql);
            execRet = DBMSExec(state, sql);
            if (execRet == NS_ERROR) {
                Ns_PdSendException(state->exceptionCode,
        state->exceptionMsg);
            } else {
                Ns_PdSendString(OK_STATUS);
                execRet == DB_ROWS ? Ns_PdSendString(EXEC_RET_ROWS) :
    Ns_PdSendString(EXEC_RET_DML);
            }
        }

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