What is cfquery?

The CFQUERY tag is the main tag used by ColdFusion to interact with databases. Using CFQUERY , you can pass any Structured Query Language (SQL) statement to a data source registered with the ColdFusion Administrator. NAME is required when passing an SQL SELECT statement and is optional for all other SQL operations.

What is datasource in ColdFusion?

A data source is a complete database configuration that uses a JDBC driver to communicate with a specific database. In Adobe ColdFusion, you configure a data source for each database that you want to use. After you configure a data source, ColdFusion can then communicate with that data source through JDBC.

What is Cfoutput?

Displays output that can contain the results of processing CFML variables and functions. You can use the query attribute to loop over the result set of a database query.

What do you need to know about cfquery SQL?

Type of source query against which the SQL will be executed. Specify either dbtype or dataSource, not both. Supports the following values: query: for querying an existing query object (i.e. Query of Queries); hql: for querying an ORM. NOTE: Supported SQL syntax varies depending on this value.

How to create a dummy query in cfquery?

A dummy query is first created from scratch using queryNew, then sorted. A query of query is performed by specifying dbtype=”query” and then using a query object variable name as in the FROM statement. This syntax was implemented by script-based components in CF 9 & 10.

Which is the default DataSource in CFC?

As of CF 9+ you can specify a default datasource in Application.cfc using the variable this.datasource Lucee 4+ the timezone used to convert a date object to a timestamp (string), this value is needed when your database runs in another timezone and you are not using cfqueryparam to insert dates.

What does the cfquery tag return in cfoutput?

Current row of query that cfoutput is processing. Comma-separated list of the query columns. 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.