EXECUTE-COMMAND — Execute an SQL command which returns no values.
Generic Function
sql-expressionAn sql expression that represents an SQL statement which will return no values.
databaseA database object. This will default to the value of *default-database*.
Executes the SQL command
      sql-expression, which may be a symbolic
      SQL expression or a string representing any SQL statement apart
      from a query, on the supplied database
      which defaults to *default-database*.
      
        (execute-command "create table eventlog (time char(30),event char(70))")
        => 
        (execute-command "create table eventlog (time char(30),event char(70))")
        >> 
        >> While accessing database #<CLSQL-POSTGRESQL:POSTGRESQL-DATABASE {480B2B6D}>
        >>   with expression "create table eventlog (time char(30),event char(70))":
        >>   Error NIL: ERROR:  amcreate: eventlog relation already exists
        >>   has occurred.
        >> 
        >> Restarts:
        >>   0: [ABORT] Return to Top-Level.
        >> 
        >> Debug  (type H for help)
        >> 
        >> (CLSQL-POSTGRESQL::|(PCL::FAST-METHOD DATABASE-EXECUTE-COMMAND (T POSTGRESQL-DATABASE))|
        >>  #<unused-arg>
        >>  #<unused-arg>
        >>  #<unavailable-arg>
        >>  #<unavailable-arg>)
        >> Source: (ERROR 'SQL-DATABASE-ERROR :DATABASE DATABASE :EXPRESSION ...)
        >> 0] 0
        (execute-command "drop table eventlog")
        => 
      Whatever effects the execution of the SQL statement has on the underlying database, if any.