Update copyrights for 2020

Backpatch-through: update all files in master, backpatch legal files through 9.4

27 files changed, 27 insertions, 27 deletions

diff --git a/src/include/optimizer/appendinfo.h b/src/include/optimizer/appendinfo.h
index 9fdb6a6036c..d6a27a60ddc 100644
--- a/src/include/optimizer/appendinfo.h
+++ b/src/include/optimizer/appendinfo.h
@@ -4,7 +4,7 @@
  *	  Routines for mapping expressions between append rel parent(s) and
  *	  children
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/appendinfo.h
diff --git a/src/include/optimizer/clauses.h b/src/include/optimizer/clauses.h
index 2f9aeec4a77..b7456e3e595 100644
--- a/src/include/optimizer/clauses.h
+++ b/src/include/optimizer/clauses.h
@@ -4,7 +4,7 @@
  *	  prototypes for clauses.c.
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/clauses.h
diff --git a/src/include/optimizer/cost.h b/src/include/optimizer/cost.h
index b3d0b4f6fbc..cb012ba1980 100644
--- a/src/include/optimizer/cost.h
+++ b/src/include/optimizer/cost.h
@@ -4,7 +4,7 @@
  *	  prototypes for costsize.c and clausesel.c.
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/cost.h
diff --git a/src/include/optimizer/geqo.h b/src/include/optimizer/geqo.h
index 484b360f1fd..aba549f1457 100644
--- a/src/include/optimizer/geqo.h
+++ b/src/include/optimizer/geqo.h
@@ -3,7 +3,7 @@
  * geqo.h
  *	  prototypes for various files in optimizer/geqo
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/geqo.h
diff --git a/src/include/optimizer/geqo_copy.h b/src/include/optimizer/geqo_copy.h
index 0654b06d5d0..87444b67120 100644
--- a/src/include/optimizer/geqo_copy.h
+++ b/src/include/optimizer/geqo_copy.h
@@ -3,7 +3,7 @@
  * geqo_copy.h
  *	  prototypes for copy functions in optimizer/geqo
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/geqo_copy.h
diff --git a/src/include/optimizer/geqo_gene.h b/src/include/optimizer/geqo_gene.h
index ff4c024bb60..9d3a94f2e83 100644
--- a/src/include/optimizer/geqo_gene.h
+++ b/src/include/optimizer/geqo_gene.h
@@ -3,7 +3,7 @@
  * geqo_gene.h
  *	  genome representation in optimizer/geqo
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/geqo_gene.h
diff --git a/src/include/optimizer/geqo_misc.h b/src/include/optimizer/geqo_misc.h
index 9b15b7455e1..93e6123d027 100644
--- a/src/include/optimizer/geqo_misc.h
+++ b/src/include/optimizer/geqo_misc.h
@@ -3,7 +3,7 @@
  * geqo_misc.h
  *	  prototypes for printout routines in optimizer/geqo
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/geqo_misc.h
diff --git a/src/include/optimizer/geqo_mutation.h b/src/include/optimizer/geqo_mutation.h
index 4ffed687ff3..bed56967c48 100644
--- a/src/include/optimizer/geqo_mutation.h
+++ b/src/include/optimizer/geqo_mutation.h
@@ -3,7 +3,7 @@
  * geqo_mutation.h
  *	  prototypes for mutation functions in optimizer/geqo
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/geqo_mutation.h
diff --git a/src/include/optimizer/geqo_pool.h b/src/include/optimizer/geqo_pool.h
index 7a135ad72b0..c3497a63ba7 100644
--- a/src/include/optimizer/geqo_pool.h
+++ b/src/include/optimizer/geqo_pool.h
@@ -3,7 +3,7 @@
  * geqo_pool.h
  *	  pool representation in optimizer/geqo
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/geqo_pool.h
diff --git a/src/include/optimizer/geqo_random.h b/src/include/optimizer/geqo_random.h
index 398455e2e92..54898c1f56f 100644
--- a/src/include/optimizer/geqo_random.h
+++ b/src/include/optimizer/geqo_random.h
@@ -3,7 +3,7 @@
  * geqo_random.h
  *	  random number generator
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/geqo_random.h
diff --git a/src/include/optimizer/geqo_recombination.h b/src/include/optimizer/geqo_recombination.h
index 8dfda79cdf9..921cf146b78 100644
--- a/src/include/optimizer/geqo_recombination.h
+++ b/src/include/optimizer/geqo_recombination.h
@@ -3,7 +3,7 @@
  * geqo_recombination.h
  *	  prototypes for recombination in the genetic query optimizer
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/geqo_recombination.h
diff --git a/src/include/optimizer/geqo_selection.h b/src/include/optimizer/geqo_selection.h
index 85c0d215104..9f0f7b727af 100644
--- a/src/include/optimizer/geqo_selection.h
+++ b/src/include/optimizer/geqo_selection.h
@@ -3,7 +3,7 @@
  * geqo_selection.h
  *	  prototypes for selection routines in optimizer/geqo
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/geqo_selection.h
diff --git a/src/include/optimizer/inherit.h b/src/include/optimizer/inherit.h
index f465a526c70..0ba61326528 100644
--- a/src/include/optimizer/inherit.h
+++ b/src/include/optimizer/inherit.h
@@ -4,7 +4,7 @@
  *	  prototypes for inherit.c.
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/inherit.h
diff --git a/src/include/optimizer/joininfo.h b/src/include/optimizer/joininfo.h
index 0807d1901f3..753d2eff586 100644
--- a/src/include/optimizer/joininfo.h
+++ b/src/include/optimizer/joininfo.h
@@ -4,7 +4,7 @@
  *	  prototypes for joininfo.c.
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/joininfo.h
diff --git a/src/include/optimizer/optimizer.h b/src/include/optimizer/optimizer.h
index 6b8fd3f285e..5283995df8f 100644
--- a/src/include/optimizer/optimizer.h
+++ b/src/include/optimizer/optimizer.h
@@ -12,7 +12,7 @@
  * example.  For the most part, however, code outside the core planner
  * should not need to include any optimizer/ header except this one.
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/optimizer.h
diff --git a/src/include/optimizer/orclauses.h b/src/include/optimizer/orclauses.h
index b5279001896..b5377fc4178 100644
--- a/src/include/optimizer/orclauses.h
+++ b/src/include/optimizer/orclauses.h
@@ -4,7 +4,7 @@
  *	  prototypes for orclauses.c.
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/orclauses.h
diff --git a/src/include/optimizer/paramassign.h b/src/include/optimizer/paramassign.h
index edf3ed86281..02b4b501df8 100644
--- a/src/include/optimizer/paramassign.h
+++ b/src/include/optimizer/paramassign.h
@@ -3,7 +3,7 @@
  * paramassign.h
  *		Functions for assigning PARAM_EXEC slots during planning.
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/paramassign.h
diff --git a/src/include/optimizer/pathnode.h b/src/include/optimizer/pathnode.h
index a12af54971b..e450fe112ae 100644
--- a/src/include/optimizer/pathnode.h
+++ b/src/include/optimizer/pathnode.h
@@ -4,7 +4,7 @@
  *	  prototypes for pathnode.c, relnode.c.
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/pathnode.h
diff --git a/src/include/optimizer/paths.h b/src/include/optimizer/paths.h
index c6c34630c28..9ab73bd20cd 100644
--- a/src/include/optimizer/paths.h
+++ b/src/include/optimizer/paths.h
@@ -4,7 +4,7 @@
  *	  prototypes for various files in optimizer/path
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/paths.h
diff --git a/src/include/optimizer/placeholder.h b/src/include/optimizer/placeholder.h
index 08f71879235..b5a6b308c83 100644
--- a/src/include/optimizer/placeholder.h
+++ b/src/include/optimizer/placeholder.h
@@ -4,7 +4,7 @@
  *	  prototypes for optimizer/util/placeholder.c.
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/placeholder.h
diff --git a/src/include/optimizer/plancat.h b/src/include/optimizer/plancat.h
index bbb27f87798..c29a7091ec0 100644
--- a/src/include/optimizer/plancat.h
+++ b/src/include/optimizer/plancat.h
@@ -4,7 +4,7 @@
  *	  prototypes for plancat.c.
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/plancat.h
diff --git a/src/include/optimizer/planmain.h b/src/include/optimizer/planmain.h
index e7aaddd50d6..eab486a6214 100644
--- a/src/include/optimizer/planmain.h
+++ b/src/include/optimizer/planmain.h
@@ -4,7 +4,7 @@
  *	  prototypes for various files in optimizer/plan
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/planmain.h
diff --git a/src/include/optimizer/planner.h b/src/include/optimizer/planner.h
index 8d30b942150..93df62d1361 100644
--- a/src/include/optimizer/planner.h
+++ b/src/include/optimizer/planner.h
@@ -8,7 +8,7 @@
  * non-planner code.  Declarations here are meant for use by other
  * planner modules.
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/planner.h
diff --git a/src/include/optimizer/prep.h b/src/include/optimizer/prep.h
index 9018160d80b..19c92302b03 100644
--- a/src/include/optimizer/prep.h
+++ b/src/include/optimizer/prep.h
@@ -4,7 +4,7 @@
  *	  prototypes for files in optimizer/prep/
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/prep.h
diff --git a/src/include/optimizer/restrictinfo.h b/src/include/optimizer/restrictinfo.h
index 0fe92ad4282..df6b97426d6 100644
--- a/src/include/optimizer/restrictinfo.h
+++ b/src/include/optimizer/restrictinfo.h
@@ -4,7 +4,7 @@
  *	  prototypes for restrictinfo.c.
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/restrictinfo.h
diff --git a/src/include/optimizer/subselect.h b/src/include/optimizer/subselect.h
index 71a22eeb647..d6a872bd2c3 100644
--- a/src/include/optimizer/subselect.h
+++ b/src/include/optimizer/subselect.h
@@ -3,7 +3,7 @@
  * subselect.h
  *	  Planning routines for subselects.
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/subselect.h
diff --git a/src/include/optimizer/tlist.h b/src/include/optimizer/tlist.h
index 8a2378f968d..1d4c7da545a 100644
--- a/src/include/optimizer/tlist.h
+++ b/src/include/optimizer/tlist.h
@@ -4,7 +4,7 @@
  *	  prototypes for tlist.c.
  *
  *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/optimizer/tlist.h