27 lines
604 B
MySQL
27 lines
604 B
MySQL
-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
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-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
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drop table t;
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create table t as
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select rownum a, 'zzz' b from dual connect by level<=1000
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union all
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select 0, 'yyy' FROM dual;
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create index i on t(a);
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exec dbms_stats.gather_table_stats(user,'T',method_opt=>'FOR COLUMNS A,B SIZE 254');
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alter session set cursor_sharing = similar;
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declare
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j number;
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begin
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for i in 1..1000 loop
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select count(*) into j from t where a = to_char(i);
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end loop;
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end;
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/
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