pgsql: Add IF NOT EXISTS processing to ALTER TABLE ADD COLUMN - Mailing list pgsql-committers

Add IF NOT EXISTS processing to ALTER TABLE ADD COLUMN

Fabrízio de Royes Mello, reviewed by Payal Singh, Alvaro Herrera and
Michael Paquier.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/2cd40adb85d1d5a7fd448721b326e73c1e318750

Modified Files
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doc/src/sgml/ref/alter_table.sgml         |    8 ++-
src/backend/commands/tablecmds.c          |   52 ++++++++++++-----
src/backend/parser/gram.y                 |   20 +++++++
src/test/regress/expected/alter_table.out |   89 +++++++++++++++++++++++++++++
src/test/regress/sql/alter_table.sql      |   31 ++++++++++
5 files changed, 182 insertions(+), 18 deletions(-)