ACCESS SHARE

commands

map[label:SELECT note:Read referenced tables without a FOR locking clause. slug:select source:map[kind:documentation path:doc/src/sgml/mvcc.sgml revision:753057e340da8f22e57c9a409ea7a235fd6a46bd sha256:4b7bf77ee0af4b86052330ff2421d567df3604b75fe7d4f522bec84fdea87340 url:https://raw.githubusercontent.com/postgres/postgres/753057e340da8f22e57c9a409ea7a235fd6a46bd/doc/src/sgml/mvcc.sgml] source_url:https://www.postgresql.org/docs/18/explicit-locking.html variant:1f13121ba39a], map[label:COPY … TO note:Read the source table. COPY (query) TO follows the locks required by that query. slug:copy source:map[kind:source path:src/backend/commands/copy.c revision:753057e340da8f22e57c9a409ea7a235fd6a46bd sha256:f50ecc1531109fc172d841d461e209cef611f3d017ef4184034c39e128deabbe url:https://raw.githubusercontent.com/postgres/postgres/753057e340da8f22e57c9a409ea7a235fd6a46bd/src/backend/commands/copy.c] source_url:https://github.com/postgres/postgres/blob/753057e340da8f22e57c9a409ea7a235fd6a46bd/src/backend/commands/copy.c variant:4883aade177f], map[label:LOCK TABLE … IN ACCESS SHARE MODE note:Request this table mode explicitly. Omitting IN MODE defaults to ACCESS EXCLUSIVE. slug:lock source:map[kind:documentation path:doc/src/sgml/mvcc.sgml revision:753057e340da8f22e57c9a409ea7a235fd6a46bd sha256:4b7bf77ee0af4b86052330ff2421d567df3604b75fe7d4f522bec84fdea87340 url:https://raw.githubusercontent.com/postgres/postgres/753057e340da8f22e57c9a409ea7a235fd6a46bd/doc/src/sgml/mvcc.sgml] source_url:https://www.postgresql.org/docs/18/explicit-locking.html variant:7b5c7a84ff72], map[label:ALTER TABLE … NO INHERIT (parent table) note:Take ACCESS SHARE on the parent while removing inheritance. The altered child separately takes ACCESS EXCLUSIVE. slug:alter-table source:map[kind:source path:src/backend/commands/tablecmds.c revision:753057e340da8f22e57c9a409ea7a235fd6a46bd sha256:df8817816f893e73d5648fea169e222ba33320e5b24bf755b424b29098f4e7da url:https://raw.githubusercontent.com/postgres/postgres/753057e340da8f22e57c9a409ea7a235fd6a46bd/src/backend/commands/tablecmds.c] source_url:https://github.com/postgres/postgres/blob/753057e340da8f22e57c9a409ea7a235fd6a46bd/src/backend/commands/tablecmds.c variant:fa0725043e5c]

provenance

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