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| author | Christian Grothoff <grothoff@gnunet.org> | 2023-08-27 14:06:28 +0200 |
|---|---|---|
| committer | Christian Grothoff <grothoff@gnunet.org> | 2023-08-27 14:06:28 +0200 |
| commit | e7a67dfbb515c71e9fbefe9e30ec1a2e017adf38 (patch) | |
| tree | c14a22f2e92c19e3a2ce02761e7bddc422b62f14 /src/exchangedb/versioning.sql | |
| parent | ffa45201bd1c279a5ca83cd8dedf08ac115049e1 (diff) | |
| download | exchange-e7a67dfbb515c71e9fbefe9e30ec1a2e017adf38.tar.xz | |
-fix issue with multiple dbinit running concurrently
Diffstat (limited to 'src/exchangedb/versioning.sql')
| -rw-r--r-- | src/exchangedb/versioning.sql | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/exchangedb/versioning.sql b/src/exchangedb/versioning.sql index 116f409b7..c7fa81213 100644 --- a/src/exchangedb/versioning.sql +++ b/src/exchangedb/versioning.sql @@ -146,12 +146,17 @@ BEGIN; +-- Added by Christian Grothoff to support concurrency, see +-- https://stackoverflow.com/questions/29900845/create-schema-if-not-exists-raises-duplicate-key-error?rq=4 +LOCK TABLE pg_catalog.pg_namespace; + + -- This file adds versioning support to database it will be loaded to. -- It requires that PL/pgSQL is already loaded - will raise exception otherwise. -- All versioning "stuff" (tables, functions) is in "_v" schema. -- All functions are defined as 'RETURNS SETOF INT4' to be able to make them to RETURN literally nothing (0 rows). --- >> RETURNS VOID<< IS similar, but it still outputs "empty line" in psql when calling. +-- >> RETURNS VOID<< IS similar, but it still outputs "empty line" in psql when calling CREATE SCHEMA IF NOT EXISTS _v; COMMENT ON SCHEMA _v IS 'Schema for versioning data and functionality.'; |