24 lines
552 B
MySQL
24 lines
552 B
MySQL
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-- 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 qt_test;
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create table qt_test (
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id number primary key
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, name varchar2(100)
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)
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/
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insert into qt_test select rownum, lpad('x',100,'x') from dual connect by level <=10000;
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exec dbms_stats.gather_table_stats(user,'QT_TEST');
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select count(name) from qt_test;
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@x
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alter table qt_test modify name not null;
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select count(name) from qt_test;
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@x
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