Add SET n:Label and REMOVE n:Label #2281
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NOTE: This PR was built with AI tools and verified by a human. Implements Cypher SET and REMOVE operations for vertex labels in the unified vertex table architecture. This allows dynamic label management on vertices. SET n:Label * Only works on vertices with no label. * Auto-creates the label if it doesn't exist. * Errors with hint if vertex already has a label: "Multiple labels are not supported. Use REMOVE to clear the label first." REMOVE n:Label * Removes a vertex's specified label. * Properties are preserved * No-op if vertex already has no label Added regression tests. modified: regress/expected/cypher_remove.out modified: regress/expected/unified_vertex_table.out modified: regress/sql/unified_vertex_table.sql modified: src/backend/executor/cypher_set.c modified: src/backend/nodes/cypher_copyfuncs.c modified: src/backend/nodes/cypher_outfuncs.c modified: src/backend/nodes/cypher_readfuncs.c modified: src/backend/parser/cypher_clause.c modified: src/backend/parser/cypher_gram.y modified: src/include/nodes/cypher_nodes.h
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NOTE: This PR was built with AI tools and verified by a human.
Implements Cypher SET and REMOVE operations for vertex labels in the unified vertex table architecture. This allows dynamic label management on vertices.
SET n:Label
Only works on vertices with no label.
Auto-creates the label if it doesn't exist.
Errors with hint if vertex already has a label: "Multiple labels are not supported. Use REMOVE to clear the label first."
REMOVE n:Label
Removes a vertex's specified label.
Properties are preserved
No-op if vertex already has no label
Added regression tests.
modified: regress/expected/cypher_remove.out
modified: regress/expected/unified_vertex_table.out
modified: regress/sql/unified_vertex_table.sql
modified: src/backend/executor/cypher_set.c
modified: src/backend/nodes/cypher_copyfuncs.c
modified: src/backend/nodes/cypher_outfuncs.c
modified: src/backend/nodes/cypher_readfuncs.c
modified: src/backend/parser/cypher_clause.c
modified: src/backend/parser/cypher_gram.y
modified: src/include/nodes/cypher_nodes.h