Queries a database and returns a list of values.
query sql-exp &key database result-types flatp => result-list, field-names
A SQL query statement or a prepared-statement containing a query.
A list of symbols.
A list of values.
A list of strings.
query is the basic SQL query function. It queries the database specified by database with a SQL query statement given by sql-exp.
The argument database defaults to *default-database*.
result-types is a list of symbols such as
:integer, one for each field in the query, which are used to specify the types to return.
flatp is used as in select.
result-list is a list of values as per select, and field-names is a list of field names selected in sql-exp.
The following two queries, on a table whose second column contains dates that we want to return as strings, are equivalent:
(sql:query "select * from some_table"
:result-types '(nil :string))
(sql:query [select [*]
:result-types '(nil :string)])
LispWorks User Guide and Reference Manual - 13 Feb 2015