EXPLAIN 

 SELECT mycolumn

   FROM mytable

  WHERE mycolumn = 'myvalue';

EXPLAIN FORMAT=JSON

 SELECT mycolumn

   FROM mytable

  WHERE mycolumn = 'myvalue';

EXPLAIN FORMAT=TREE

 SELECT mycolumn

   FROM mytable

  WHERE mycolumn = 'myvalue';

EXPLAIN ANALYZE

 SELECT mycolumn

   FROM mytable

  WHERE mycolumn = 'myvalue';

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