<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >odbc_specialcolumns</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="ODBC Functions (Unified)" HREF="ref.uodbc.html"><LINK REL="PREVIOUS" TITLE="odbc_setoption" HREF="function.odbc-setoption.html"><LINK REL="NEXT" TITLE="odbc_statistics" HREF="function.odbc-statistics.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.odbc-setoption.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.odbc-statistics.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.odbc-specialcolumns" ></A >odbc_specialcolumns</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN161586" ></A ><P > (PHP 4, PHP 5)</P >odbc_specialcolumns -- Returns either the optimal set of columns that uniquely identifies a row in the table or columns that are automatically updated when any value in the row is updated by a transaction</DIV ><DIV CLASS="refsect1" ><A NAME="AEN161589" ></A ><H2 >Description</H2 >resource <B CLASS="methodname" >odbc_specialcolumns</B > ( resource connection_id, int type, string qualifier, string owner, string table, int scope, int nullable )<BR ></BR ><P > When the type argument is SQL_BEST_ROWID, <B CLASS="function" >odbc_specialcolumns()</B > returns the column or columns that uniquely identify each row in the table. </P ><P > When the type argument is SQL_ROWVER, <B CLASS="function" >odbc_specialcolumns()</B > returns the column or columns in the specified table, if any, that are automatically updated by the data source when any value in the row is updated by any transaction. </P ><P > Returns an ODBC result identifier or <TT CLASS="constant" ><B >FALSE</B ></TT > on failure. </P ><P > The result set has the following columns: <P ></P ><UL ><LI ><P >SCOPE</P ></LI ><LI ><P >COLUMN_NAME</P ></LI ><LI ><P >DATA_TYPE</P ></LI ><LI ><P >TYPE_NAME</P ></LI ><LI ><P >PRECISION</P ></LI ><LI ><P >LENGTH</P ></LI ><LI ><P >SCALE</P ></LI ><LI ><P >PSEUDO_COLUMN</P ></LI ></UL > </P ><P > The result set is ordered by SCOPE. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.odbc-setoption.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >起始页</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.odbc-statistics.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >odbc_setoption</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.uodbc.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >odbc_statistics</TD ></TR ></TABLE ></DIV ></BODY ></HTML >