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Hi!
Thank you.
>This revised query should give you what you need:
>SELECT 'ALTER TABLE ' || quote_ident(n.nspname) || '.' > || quote_ident(c.relname) > || ' ALTER COLUMN ' || quote_ident(a.attname) || ' TYPE varchar(' || i.character_maximum_length || ');' > FROM pg_class c > JOIN pg_namespace n ON n.oid = c.relnamespace > JOIN pg_attribute a ON a.attrelid = c.oid > JOIN pg_type t ON t.oid = a.atttypid > JOIN information_schema.columns i ON (i.table_name = c.relname AND i.column_name = a.attname) >WHERE t.typname = 'bpchar' > AND c.relkind = 'r' > AND n.nspname <> 'pg_catalog' and not attisdropped; How to create single alter table command for every table ? Can we use string concat aggregate function or window functions or
plpgsql or something other ?
Andrus. |
