Re: Virtual generated columns
jian he <jian.universality@gmail.com>
Commits
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the thread's linked commits as JSON, with link sources.
API reference →
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Expand virtual generated columns for ALTER COLUMN TYPE
- 5069fef1cfae 18.0 landed
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Eliminate code duplication in replace_rte_variables callbacks
- 363a6e8c6fcf 18.0 landed
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Expand virtual generated columns in the planner
- 1e4351af329f 18.0 landed
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Virtual generated columns
- 83ea6c54025b 18.0 landed
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Additional tests for stored generated columns
- 41084409f635 18.0 landed
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Improve generated_stored test
- 44b61efb7928 18.0 landed
- 86749ea3b766 18.0 landed
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Fix handling of CREATE DOMAIN with GENERATED constraint syntax
- 84a67725cd11 18.0 landed
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Add pg_constraint rows for not-null constraints
- 14e87ffa5c54 18.0 cited
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Put generated_stored test objects in a schema
- 894be11adfa6 18.0 landed
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Rename regress test generated to generated_stored
- b9ed4969250d 18.0 landed
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Small code simplification
- 7ff9afbbd1df 18.0 landed
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Remove useless code
- e26d313bad92 18.0 landed
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Remove useless initializations
- da2aeba8f533 18.0 landed
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doc: Clarify that pg_attrdef also stores generation expressions
- da486d360103 18.0 landed
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Clean out column-level pg_init_privs entries when dropping tables.
- 76618097a6c0 17.0 cited
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Re-implement the ereport() macro using __VA_ARGS__.
- e3a87b4991cc 13.0 cited
Attachments
- v7-0001-Virtual-generated-columns-no-table_rewrite.no-cfbot (application/octet-stream)
in v7.
doc/src/sgml/ref/alter_table.sgml
<phrase>and <replaceable
class="parameter">column_constraint</replaceable> is:</phrase>
section need representation of:
GENERATED ALWAYS AS ( <replaceable>generation_expr</replaceable> ) [VIRTUAL]
in RelationBuildTupleDesc(Relation relation)
we need to add "constr->has_generated_virtual" for the following code?
if (constr->has_not_null ||
constr->has_generated_stored ||
ndef > 0 ||
attrmiss ||
relation->rd_rel->relchecks > 0)
also seems there will be table_rewrite for adding virtual generated
columns, but we can avoid that.
The attached patch is the change and the tests.
i've put the tests in src/test/regress/sql/fast_default.sql,
since it already has event triggers and trigger functions, we don't
want to duplicate it.