ROW EXCLUSIVE

commands

map[label:INSERT note:Lock the insertion target. Inserting a new row is not equivalent to locking an existing row FOR UPDATE. slug:insert 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:011bda5384fe], map[label:UPDATE note:Lock the target table; affected existing rows also receive row locks. slug:update 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:0c9208f1d36f], map[label:DELETE note:Lock the target table; deleted rows also receive FOR UPDATE locks. slug:delete 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:a1f051f53cf5], map[label:COPY … FROM note:Lock the target and insert new rows. This does not generally lock existing rows FOR UPDATE. 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:35ae102cb391], map[label:MERGE note:Lock the target table. Row locking depends on the INSERT, UPDATE or DELETE action actually taken. slug:merge 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:807c472ed453], map[label:LOCK TABLE … IN ROW EXCLUSIVE 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:421ca5bc15d6], map[label:UPDATE (non-key update) note:This write variant takes ROW EXCLUSIVE on its target table. Existing-row locks depend on the action actually performed. slug:update 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:ff82a8ae4e60], map[label:UPDATE (key update) note:This write variant takes ROW EXCLUSIVE on its target table. Existing-row locks depend on the action actually performed. slug:update 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:1982fd8d6bd7], map[label:MERGE … WHEN MATCHED THEN UPDATE (non-key) note:This write variant takes ROW EXCLUSIVE on its target table. Existing-row locks depend on the action actually performed. slug:merge 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:85e4fea63221], map[label:MERGE … WHEN MATCHED THEN DELETE / UPDATE (key) note:This write variant takes ROW EXCLUSIVE on its target table. Existing-row locks depend on the action actually performed. slug:merge 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:8341438966ce], map[label:INSERT … ON CONFLICT DO UPDATE (non-key) note:This write variant takes ROW EXCLUSIVE on its target table. Existing-row locks depend on the action actually performed. slug:insert 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:22d6f52ccf90], map[label:INSERT … ON CONFLICT DO UPDATE (key) note:This write variant takes ROW EXCLUSIVE on its target table. Existing-row locks depend on the action actually performed. slug:insert 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:211a0191f91b], map[label:INSERT (foreign-key check) note:The write target takes ROW EXCLUSIVE. The foreign-key check takes ROW SHARE and FOR KEY SHARE on a different object: the referenced table and its matching rows. slug:insert 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:ffddc0fc16b6], map[label:UPDATE (foreign-key check) note:The write target takes ROW EXCLUSIVE. The foreign-key check takes ROW SHARE and FOR KEY SHARE on a different object: the referenced table and its matching rows. slug:update 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:65d8638ef74c], map[label:COPY … FROM (foreign-key check) note:The write target takes ROW EXCLUSIVE. The foreign-key check takes ROW SHARE and FOR KEY SHARE on a different object: the referenced table and its matching rows. 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:b85f269c1b8e], map[label:MERGE (foreign-key check) note:The write target takes ROW EXCLUSIVE. The foreign-key check takes ROW SHARE and FOR KEY SHARE on a different object: the referenced table and its matching rows. slug:merge 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:e00dfdc184d6]

provenance

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