Passes queries or SQL statements to a data source.

Database Manipulation Tags

cfdbinfo cfinsert cfprocparam cfprocresult cfqueryparam cfstoredproc cftransaction cfupdate

ColdFusion 9: Datasource attribute is optional now. ColdFusion 8: Added the result variable that specifies the ID of a row. ColdFusion MX 7: Added the result attribute for specifying an alternate name for the structure that holds the result variables. Added result variables for the SQL statement executed (sql), the number of records returned (recordcount), whether the query was cached (cached), an array of cfqueryparam values (sqlparameters), and the list of columns in the returned query (columnlist). ColdFusion MX: Changed Query of Queries behavior: it now supports a larger subset of standard SQL. Changed dot notation support: ColdFusion now supports dot notation within a record set name. ColdFusion interprets such a name as a structure. Deprecated the connectString, dbName, dbServer, provider, providerDSN, and sql attributes, and all values of the dbtype attribute except query. They do not work, and might cause an error, in releases later than ColdFusion 5. New query object variable: cfquery.ExecutionTime. No longer supports native drivers. It now uses JDBC (and ODBC-JDBC bridge) for database connectivity.

<cfquery  
    name = "query name" 
    blockFactor = "block size" 
    cachedAfter = "date"  
    cachedWithin = "timespan" 
    dataSource = "data source name" 
    dbtype = "query" 
    debug = "yes|no" 
    maxRows = "number" 
    password = "password" 
    result = "result name" 
    timeout = "seconds" 
    username = "user name"> 
</cfquery>

Note: You can specify this tag’s attributes in an attributeCollection attribute whose value is a structure. Specify the structure name in the attributeCollection attribute and use the tag’s attribute names as structure keys.

Use this tag to execute a SQL statement against a ColdFusion data source. Although you can use the cfquery tag to execute any SQL Data Definition Language (DDL) or Data Manipulation Language (DML) statement, you typically use it to execute a SQL SELECT statement.
Note: To call a stored procedure, use the cfstoredproc tag.
This tag creates a query object, providing this information in query variables:
Variable name
Description
query_name.currentRow
Current row of query that cfoutput is processing.
query_name.columnList
Comma-separated list of the query columns.
query_name.RecordCount
Number of records (rows) returned from the query.

The cfquery tag also returns the following result variables in a structure. You can access these variables with a prefix of the name you specified in the result attribute. For example, if you assign the name myResult to the result attribute, you would retrieve the name of the SQL statement that was executed by accessing #myResult.sql#. The result attribute provides a way for functions or CFCs that are called from multiple pages, possibly at the same time, to avoid overwriting results of one call with another. The result variable of INSERT queries contains a key-value pair that is the automatically generated ID of the inserted row; this is available only for databases that support this feature. If more than one record was inserted, the value can be a list of IDs. The key name is database-specific.
Variable name
Description
result_name.sql
The SQL statement that was executed.
result_name.recordcount
Number of records (rows) returned from the query.
result_name.cached
True if the query was cached; False otherwise.
result_name.sqlparameters
An ordered Array of cfqueryparam values.
result_name.columnList
Comma-separated list of the query columns.
result_name.ExecutionTime
Cumulative time required to process the query.
result_name.IDENTITYCOL
SQL Server only. The ID of an inserted row.
result_name.ROWID
Oracle only. The ID of an inserted row. This is not the primary key of the row, although you can retrieve rows based on this ID.
result_name.SYB_IDENTITY
Sybase only. The ID of an inserted row.
result_name.SERIAL_COL
Informix only. The ID of an inserted row.
result_name.GENERATED_KEY
MySQL only. The ID of an inserted row. MySQL 3 does not support this feature.

You can cache query results and execute stored procedures. For information about this and about displaying cfquery output, see the Developing ColdFusion Applications.
Because the timeout attribute only affects the maximum time for each suboperation of a query, the cumulative time may exceed its value. To set a timeout for a page that might get a very large result set, set the Administrator > Server Settings > Timeout Requests option to an appropriate value or use the RequestTimeout attribute of the cfsetting tag (for example, <cfsettingrequestTimeout="300">).
The Caching page of the ColdFusion Administrator specifies the maximum number of cached queries. Setting this value to 0 disables query caching.
You cannot use ColdFusion reserved words as query names.
You cannot use SQL reserved words as variable or column names in a Query of Queries, unless they are escaped. The escape character is the bracket []; for example:
SELECT [count] FROM MYTABLE. For a list of reserved keywords in ColdFusion, see Escaping reserved keywords in the Developing ColdFusion Applications.

<!--- This example shows the use of CreateTimeSpan with CFQUERY ------> 
<!--- to cache a record set. Define startrow and maxrows to ----> 
<!--- facilitate 'next N' style browsing. ----> 
<cfparam name="MaxRows" default="10"> 
<cfparam name="StartRow" default="1"> 
<!-------------------------------------------------------------------- 
Query database for information if cached database information has 
not been updated in the last six hours; otherwise, use cached data. 
---------------------------------------------------------------------> 
<cfquery  
    name="GetParks" datasource="cfdocexamples"  
    cachedwithin="#CreateTimeSpan(0, 6, 0, 0)#"> 
    SELECT PARKNAME, REGION, STATE 
    FROM Parks 
    ORDER BY ParkName, State 
</cfquery> 
<!--- Build HTML table to display query. -------------------------> 
<table cellpadding="1" cellspacing="1"> 
    <tr> 
        <td bgcolor="f0f0f0"> 
            &nbsp; 
        </td> 
        <td bgcolor="f0f0f0"> 
            <b><i>Park Name</i></b> 
        </td> 
        <td bgcolor="f0f0f0"> 
            <b><i>Region</i></b> 
        </td> 
        <td bgcolor="f0f0f0"> 
            <b><i>State</i></b> 
        </td> 
    </tr> 
<!--- Output the query and define the startrow and maxrows parameters.  
Use the query variable CurrentCount to keep track of the row you are displaying. ------> 
<cfoutput query="GetParks" startrow="#StartRow#" maxrows="#MaxRows#"> 
    <tr> 
        <td valign="top" bgcolor="ffffed"> 
            <b>#GetParks.CurrentRow#</b> 
        </td> 
        <td valign="top"> 
            <font size="-1">#ParkName#</font> 
        </td> 
        <td valign="top"> 
            <font size="-1">#Region#</font> 
        </td> 
        <td valign="top"> 
            <font size="-1">#State#</font> 
        </td> 
    </tr> 
</cfoutput> 
<!--- If the total number of records is less than or equal to the total number of rows,  
then offer a link to the same page, with the startrow value incremented by maxrows  
(in the case of this example, incremented by 10). ---------> 
    <tr> 
        <td colspan="4"> 
        <cfif (StartRow + MaxRows) LTE GetParks.RecordCount> 
            <cfoutput><a href="#CGI.SCRIPT_NAME#?startrow=#Evaluate(StartRow + MaxRows)#"> 
            See next #MaxRows# rows</a></cfoutput>  
        </cfif> 
        </td> 
    </tr> 
</table>