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43 lines
2.1 KiB
PHP
43 lines
2.1 KiB
PHP
################################################################################
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# inc/vcol_dependencies_on_vcol.inc #
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# #
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# Purpose: #
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# Testing scenarios when columns depend on virtual columns, i.e. such as #
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# - a virtual column is based on a virtual column #
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# - a "real" column on which a virtual one is renamed/dropped #
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# - a virtual column involved in partitioning is renamed/dropped #
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# #
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#------------------------------------------------------------------------------#
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# Original Author: Andrey Zhakov #
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# Original Date: 2008-09-02 #
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# Change Author: Oleksandr Byelkin (Monty program Ab)
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# Date: 2009-03-24
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# Change: Syntax changed
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################################################################################
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--echo # Can't define a virtual column on another virtual column
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--error ER_VCOL_BASED_ON_VCOL
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create table t1 (a int, b int as (a+1), c int as (b+1));
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create table t1 (a int, b int as (a+1));
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--error ER_VCOL_BASED_ON_VCOL
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alter table t1 add column c int as (b+1);
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drop table t1;
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--echo # Can't rename or drop a column used in the function of a virtual column
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create table t1 (a int, b int as (a+1));
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--echo # On renaming/dropping a column on which a virtual field is
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--echo # defined the following error is displayed:
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--echo # "Unknown column 'a' in 'virtual column function'"
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--error ER_BAD_FIELD_ERROR
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alter table t1 drop column a;
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--error ER_BAD_FIELD_ERROR
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alter table t1 change a c int;
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drop table t1;
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--echo # Can't rename or drop a virtual column used by the paritition function
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create table t1 (a int, b int as (a+1)) partition by hash(b);
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--error ER_BAD_FIELD_ERROR
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alter table t1 drop b;
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--error ER_BAD_FIELD_ERROR
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alter table t1 change b c int as (a+1);
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