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43 lines
2.3 KiB
PHP
43 lines
2.3 KiB
PHP
################################################################################
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# inc/gcol_dependencies_on_gcol.inc #
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# #
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# Purpose: #
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# Testing scenarios when columns depend on generated columns, i.e. such as #
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# - a generated column is based on a generated column #
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# - a "real" column on which a generated one is renamed/dropped #
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# - a generated 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: #
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# Change Date: #
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# Change: #
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################################################################################
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--echo # Can't define a generated column on another generated column
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--error ER_VCOL_BASED_ON_VCOL
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create table t1 (a int, b int generated always as (a+1) virtual, c int generated always as (b+1) virtual);
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create table t1 (a int, b int generated always as (a+1) virtual);
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--error ER_VCOL_BASED_ON_VCOL
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alter table t1 add column c int generated always as (b+1) virtual;
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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 generated column
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create table t1 (a int, b int generated always as (a+1) virtual);
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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 'generated column function'"
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--error 1054
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alter table t1 drop column a;
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--error 1054
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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 generated column used by the paritition function
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create table t1 (a int, b int generated always as (a+1) virtual) partition by hash(b);
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--error 1054
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alter table t1 drop b;
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--error 1054
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alter table t1 change b c int generated always as (a+1) virtual;
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