Delete rows from a table if table exists in Redshift otherwise ignore deletion -


i using redshift. want query delete selected rows redshift table if table exists otherwise ignore statement.

redshift's sql dialect doesn't contain control-of-flow statements if.. not going able in single sql statement.

your application or process need first query redshift table metadata determine if table exists e.g. 

select 1 pg_tables schemaname = 'myschema' , tablename = 'myschema';

if data returned (i.e. table exists) application or process execute delete statement, if no data returned application or process nothing. need handle "if this" logic externally redshift.


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