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| author | Peter Eisentraut | 2024-01-04 14:45:35 +0000 |
|---|---|---|
| committer | Peter Eisentraut | 2024-01-04 15:28:54 +0000 |
| commit | 5d06e99a3cfc23bbc217b4d78b8c070ad52f720e (patch) | |
| tree | f19ee2c99bdfec654b28f4e6afdbae26c5ff0eb0 /src/bin/psql/tab-complete.c | |
| parent | ae69c4fcf1337af399a788ab8d96af540bd1cd8e (diff) | |
ALTER TABLE command to change generation expression
This adds a new ALTER TABLE subcommand ALTER COLUMN ... SET EXPRESSION
that changes the generation expression of a generated column.
The syntax is not standard but was adapted from other SQL
implementations.
This command causes a table rewrite, using the usual ALTER TABLE
mechanisms. The implementation is similar to and makes use of some of
the infrastructure of the SET DATA TYPE subcommand (for example,
rebuilding constraints and indexes afterwards). The new command
requires a new pass in AlterTablePass, and the ADD COLUMN pass had to
be moved earlier so that combinations of ADD COLUMN and SET EXPRESSION
can work.
Author: Amul Sul <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/CAAJ_b94yyJeGA-5M951_Lr+KfZokOp-2kXicpmEhi5FXhBeTog@mail.gmail.com
Diffstat (limited to 'src/bin/psql/tab-complete.c')
| -rw-r--r-- | src/bin/psql/tab-complete.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c index 00770a0e6bc..09914165e42 100644 --- a/src/bin/psql/tab-complete.c +++ b/src/bin/psql/tab-complete.c @@ -2504,7 +2504,7 @@ psql_completion(const char *text, int start, int end) /* ALTER TABLE ALTER [COLUMN] <foo> SET */ else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET") || Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET")) - COMPLETE_WITH("(", "COMPRESSION", "DEFAULT", "GENERATED", "NOT NULL", "STATISTICS", "STORAGE", + COMPLETE_WITH("(", "COMPRESSION", "DEFAULT", "EXPRESSION", "GENERATED", "NOT NULL", "STATISTICS", "STORAGE", /* a subset of ALTER SEQUENCE options */ "INCREMENT", "MINVALUE", "MAXVALUE", "START", "NO", "CACHE", "CYCLE"); /* ALTER TABLE ALTER [COLUMN] <foo> SET ( */ @@ -2515,6 +2515,14 @@ psql_completion(const char *text, int start, int end) else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "COMPRESSION") || Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "COMPRESSION")) COMPLETE_WITH("DEFAULT", "PGLZ", "LZ4"); + /* ALTER TABLE ALTER [COLUMN] <foo> SET EXPRESSION */ + else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "EXPRESSION") || + Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "EXPRESSION")) + COMPLETE_WITH("AS"); + /* ALTER TABLE ALTER [COLUMN] <foo> SET EXPRESSION AS */ + else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "EXPRESSION", "AS") || + Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "EXPRESSION", "AS")) + COMPLETE_WITH("("); /* ALTER TABLE ALTER [COLUMN] <foo> SET GENERATED */ else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "GENERATED") || Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "GENERATED")) |