IO-1248 IO-1247 Resolve nulls in system & payment search update.

hasura/migrations/1625768789569_run_sql_migration/down.yaml

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+[]

hasura/migrations/1625768789569_run_sql_migration/up.yaml

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+- args:
+    cascade: false
+    read_only: false
+    sql: "CREATE OR REPLACE FUNCTION public.search_payments(search text)\n RETURNS
+      SETOF payments\n LANGUAGE plpgsql\n STABLE\nAS $function$\n\nBEGIN\n  if search
+      = '' then\n    return query select * from payments ;\n  else \n    return query
+      SELECT\n  p.*\nFROM\n  payments p, jobs j\nWHERE\np.jobid = j.id AND\n(\nsearch
+      <% p.paymentnum OR\nsearch <% j.ownr_fn OR\nsearch <% j.ownr_ln OR\nsearch <%
+      j.ownr_co_nm OR\nsearch <% j.ro_number OR\n  search <% (p.payer) OR\n  search
+      <% (p.transactionid) OR\n  search <% (p.memo));\n  end if;\n\n\tEND\n$function$;"
+  type: run_sql