text: -- DESCRIBE, DESC , EXPLAIN -- check syntax
  create table tt1 (s1 sequence ( integer,   char varying, integer ),
  		  i1 integer,
  		  i2 integer auto_increment,
  		  i3 integer unique,
  		  i4 integer default 33,
  		  n1 numeric(10) not NULL,
  		  n2 numeric (10,2),
  		  n3 numeric);
  
  
  DESCRIBE tt1;
  
  DESCRIBE tt1 '%1';
  
  DESCRIBE tt1 i1;
  	  
  DESC tt1;
  
  DESC tt1 '%1';
  
  DESC tt1 i1;
  
  
  EXPLAIN tt1;
  
  EXPLAIN tt1 '%1';
  
  EXPLAIN tt1 i1;
  
  
  drop table tt1;
  
  