diff --git a/ext/misc/wholenumber.c b/ext/misc/wholenumber.c
index 5643f9cf7e..03d6e6902e 100644
--- a/ext/misc/wholenumber.c
+++ b/ext/misc/wholenumber.c
@@ -220,7 +220,7 @@ static int wholenumberBestIndex(
     pIdxInfo->orderByConsumed = 1;
   }
   if( (idxNum & 12)==0 ){
-    pIdxInfo->estimatedCost = (double)100000000;
+    pIdxInfo->estimatedCost = 1e99;
   }else if( (idxNum & 3)==0 ){
     pIdxInfo->estimatedCost = (double)5;
   }else{
diff --git a/manifest b/manifest
index 05c247a4ec..5f911a3705 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Improved\slabeling\sof\sEXPLAIN\sQUERY\sPLAN\soutput.\s\sMany\stest\sfailures\sdue\sto\nthe\sdifferent\soutput\sformat.
-D 2021-03-19T13:00:28.477
+C Merge\senhancements\sfrom\strunk.
+D 2021-03-19T19:09:24.666
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -336,7 +336,7 @@ F ext/misc/vfslog.c 3b25c2f56ba60788db247287be6ab024b53c4afffd412b4876db563389be
 F ext/misc/vfsstat.c 389ea13983d3af926504c314f06a83cc858d5adc24b40af74aaed1fece00c118
 F ext/misc/vtablog.c 5538acd0c8ddaae372331bee11608d76973436b77d6a91e8635cfc9432fba5ae
 F ext/misc/vtshim.c 1976e6dd68dd0d64508c91a6dfab8e75f8aaf6cd
-F ext/misc/wholenumber.c 520f34c3099e5b7d546f13708607dc2fa173c46b68952eecf0d19cd675fec85e
+F ext/misc/wholenumber.c a838d1bea913c514ff316c69695efbb49ea3b8cb37d22afc57f73b6b010b4546
 F ext/misc/zipfile.c e35e035bc2765b1ccdcb15f9815c2112843fcbc8f36aa071f0e5935df7072228
 F ext/misc/zorder.c b0ff58fa643afa1d846786d51ea8d5c4b6b35aa0254ab5a82617db92f3adda64
 F ext/rbu/rbu.c b880ca5cb857d6d6f52e72eb7397813058ef48c78c5402cd04ff2b6b5437f622
@@ -503,7 +503,7 @@ F src/hash.c 8d7dda241d0ebdafb6ffdeda3149a412d7df75102cecfc1021c98d6219823b19
 F src/hash.h 9d56a9079d523b648774c1784b74b89bd93fac7b365210157482e4319a468f38
 F src/hwtime.h cb1d7e3e1ed94b7aa6fde95ae2c2daccc3df826be26fc9ed7fd90d1750ae6144
 F src/in-operator.md 10cd8f4bcd225a32518407c2fb2484089112fd71
-F src/insert.c 0f893f734487729a9d48a0335dcbb541f1e479e7f048d996e3a0b9dc69d427a2
+F src/insert.c b73e6ca39a1ff5bbdb36fbc1600e922fad8e69e1a34e6eea947e18f1aa8bf838
 F src/legacy.c d7874bc885906868cd51e6c2156698f2754f02d9eee1bae2d687323c3ca8e5aa
 F src/loadext.c 8c9c8cd2bd8eecdb06d9b6e89de7e9e65bae45cc8fc33609cc74023a5c296067
 F src/main.c 2a7ece3a67c646e5fe9984ffe0277d6a76f80ce9715bf2faa591d8cb66b9d913
@@ -542,7 +542,7 @@ F src/printf.c 59c2222594b692bbf323b44e14c9d3c095799e91f1b10ca66fee0859fe24323e
 F src/random.c 80f5d666f23feb3e6665a6ce04c7197212a88384
 F src/resolve.c dd47248c2c914feb0d4428c27d782e2723971d32cfa5536f49306d080df4d45a
 F src/rowset.c ba9515a922af32abe1f7d39406b9d35730ed65efab9443dc5702693b60854c92
-F src/select.c f8ef9023982ebbc3bfa47b96590aa03d944d8766038ce5970d6762ff9949248b
+F src/select.c 5095a9f76ed7a1e15796a813e3f616b539a9f16c5d3c963bcbe869c545ffd493
 F src/shell.c.in 8df3912a7ca4873a1443d4adef1b25baee8c086ab479fd9c4f13ab03f98049ab
 F src/sqlite.h.in 3426a080ea1f222a73e3bd91e7eacbd30570a0117c03d42c6dde606f33e5e318
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
@@ -606,7 +606,7 @@ F src/test_windirent.h 90dfbe95442c9762357fe128dc7ae3dc199d006de93eb33ba3972e0a9
 F src/test_window.c cdae419fdcea5bad6dcd9368c685abdad6deb59e9fc8b84b153de513d394ba3f
 F src/test_wsd.c 41cadfd9d97fe8e3e4e44f61a4a8ccd6f7ca8fe9
 F src/threads.c 4ae07fa022a3dc7c5beb373cf744a85d3c5c6c3c
-F src/tokenize.c c64c49d7c2ec4490c2fef1f24350167ba16b03b0c6cee58ad1a1d70a4325d4e9
+F src/tokenize.c 0b9c82fa628b5adce93e2bcaf935a24d43eb83344fb51551f7835526d0693fc4
 F src/treeview.c c6260e1fa5f41c361b2409edc9b0050bcaef5bc4d6abc467fbc45f0d7ccf3d84
 F src/trigger.c f555123aabf7f3d175cbe6d33c02783302cbdc0a7236203fa2a0539baf2d890e
 F src/update.c 0f5a61f0787199983530a33f6fffe4f52742f35fcdf6ccfad1078b1a8bc17723
@@ -1303,7 +1303,7 @@ F test/round1.test 768018b04522ca420b1aba8a24bd76091d269f3bce3902af3ec6ebcee41ab
 F test/rowallock.test 3f88ec6819489d0b2341c7a7528ae17c053ab7cc
 F test/rowhash.test 0bc1d31415e4575d10cacf31e1a66b5cc0f8be81
 F test/rowid.test bfbd7b97d9267660be3c8f28507c4ed7f205196b8877c0db42df347c2e8845e3
-F test/rowvalue.test b5436c767394a3f8fa5e7e474b2114ba430fdab34a5c8573c1b6256756534565
+F test/rowvalue.test 6795850abf6243e96f09ef041919d1ea61713332237b60d01371c0fee73f6379
 F test/rowvalue2.test 060d238b7e5639a7c5630cb5e63e311b44efef2b
 F test/rowvalue3.test 3068f508753af69884b12125995f023da0dbb256
 F test/rowvalue4.test 02e35f7762371c2f57ebd856aa056eac56cb27ef7715a0bb31eac1895a745356
@@ -1661,7 +1661,7 @@ F test/upsert1.test 88f9e258c6a0eeeb85937b08831e8daad440ba41f125af48439e9d33f266
 F test/upsert2.test 9c3cdbb1a890227f6504ce4b0e3de68f4cdfa16bb21d8641208a9239896c5a09
 F test/upsert3.test 88d7d590a1948a9cb6eac1b54b0642f67a9f35a1fc0f19b200e97d5d39e3179c
 F test/upsert4.test 25d2a1da92f149331ae0c51ca6e3eee78189577585eab92de149900d62994fa5
-F test/upsert5.test f49faf5f15b5c3641c6f5d7c7cc531ef5ac997567b2b6bb7bc96f7c88753ca0b
+F test/upsert5.test fff0dcfce73c649204543088d8e5bde01172676063ec9b8f8fc7f195abc386fe
 F test/upsertfault.test f21ca47740841fdb4d61acfa7b17646d773e67724fe8c185b71c018db8a94b35
 F test/uri.test 3481026f00ade6dfe8adb7acb6e1e47b04369568
 F test/uri2.test 9d3ba7a53ee167572d53a298ee4a5d38ec4a8fb7
@@ -1788,7 +1788,7 @@ F test/windowerr.test a8b752402109c15aa1c5efe1b93ccb0ce1ef84fa964ae1cd6684dd0b3c
 F test/windowfault.test d543d46571b32d19f198cb04b6505747fabf3cc369970daae47074ee793612be
 F test/windowpushd.test 5b9c114e8173c3addacf58a0fcd941437b14649f2033700184479a13f188ad00
 F test/with1.test 780be387f01e290e768bdfd1827280f9e37ba37223eb4736aba386864fac5a94
-F test/with2.test de3b9070ab4e4a8fdbba8d46dd06a17e47088314a3070479bd3882f178f61593
+F test/with2.test 000fb95f1f29dae868cea0f41505eb5126077d49eb967ff88f9ee46212ad8863
 F test/with3.test 2f1e05aef7aeef9a741cbf36deeb4be73003dc541921c3abc78becbbf5b7852d
 F test/with4.test 257be66c0c67fee1defbbac0f685c3465e2cad037f21ce65f23f86084f198205
 F test/with5.test 6248213c41fab36290b5b73aa3f937309dfba337004d9d8434c3fabc8c7d4be8
@@ -1910,10 +1910,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 114d9780aecdd9f03f235fc1f2ab81ef89cb00b3bafa61cff612e939595ff5f0
-R 710195bef3f0d2c17fb0c771d4c8fb88
-T *branch * eqp-improvements
-T *sym-eqp-improvements *
-T -sym-trunk *
+P 6f8faec0222a7ca07cc1a5ed16cc08d92c6e20bbcb34851b4eff9e624de53601 f12b54042e27b2fe99f23f97c103ee4371f8d4df3b049d9bb5d64891db56eee5
+R b1c29a6e3125d2bf75454721444d7112
 U drh
-Z c0a2560796cb72b7c4ee37f12bd1d09c
+Z e489e4a1a305f57f100d2d980cdadf52
diff --git a/manifest.uuid b/manifest.uuid
index aae708644e..f97cdf851f 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-6f8faec0222a7ca07cc1a5ed16cc08d92c6e20bbcb34851b4eff9e624de53601
\ No newline at end of file
+d192d737755876293a2914fcb9a0d5efbe07f3cd281c038666ea5aa879c06321
\ No newline at end of file
diff --git a/src/insert.c b/src/insert.c
index d4f404c0be..2f91cf4749 100644
--- a/src/insert.c
+++ b/src/insert.c
@@ -1004,7 +1004,9 @@ void sqlite3Insert(
       pNx->iDataCur = iDataCur;
       pNx->iIdxCur = iIdxCur;
       if( pNx->pUpsertTarget ){
-        sqlite3UpsertAnalyzeTarget(pParse, pTabList, pNx);
+        if( sqlite3UpsertAnalyzeTarget(pParse, pTabList, pNx) ){
+          goto insert_cleanup;
+        }
       }
       pNx = pNx->pNextUpsert;
     }while( pNx!=0 );
diff --git a/src/select.c b/src/select.c
index d172e2da7e..3dd944d9cd 100644
--- a/src/select.c
+++ b/src/select.c
@@ -6386,7 +6386,9 @@ int sqlite3Select(
       sqlite3VdbeAddOp2(v, OP_OpenDup, pItem->iCursor, pPrior->iCursor);
       pSub->nSelectRow = pPrior->pSelect->nSelectRow;
     }else{
-      /* Generate a subroutine that will materialize the view. */
+      /* Materalize the view.  If the view is not correlated, generate a
+      ** subroutine to do the materialization so that subsequent uses of
+      ** the same view can reuse the materialization. */
       int topAddr;
       int onceAddr = 0;
       int retAddr;
@@ -6413,7 +6415,7 @@ int sqlite3Select(
       VdbeComment((v, "end %!S", pItem));
       sqlite3VdbeChangeP1(v, topAddr, retAddr);
       sqlite3ClearTempRegCache(pParse);
-      if( pItem->fg.isCte ){
+      if( pItem->fg.isCte && pItem->fg.isCorrelated==0 ){
         CteUse *pCteUse = pItem->u2.pCteUse;
         pCteUse->addrM9e = pItem->addrFillSub;
         pCteUse->regRtn = pItem->regReturn;
diff --git a/src/tokenize.c b/src/tokenize.c
index 712447c4ca..5e01de2b90 100644
--- a/src/tokenize.c
+++ b/src/tokenize.c
@@ -80,7 +80,7 @@ static const unsigned char aiClass[] = {
 #ifdef SQLITE_EBCDIC
 /*         x0  x1  x2  x3  x4  x5  x6  x7  x8  x9  xa  xb  xc  xd  xe  xf */
 /* 0x */   29, 28, 28, 28, 28,  7, 28, 28, 28, 28, 28, 28,  7,  7, 28, 28,
-/* 1x */   28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+/* 1x */   28, 28, 28, 28, 28,  7, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
 /* 2x */   28, 28, 28, 28, 28,  7, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
 /* 3x */   28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
 /* 4x */    7, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 26, 12, 17, 20, 10,
diff --git a/test/rowvalue.test b/test/rowvalue.test
index 91a59e71c3..b9967a865a 100644
--- a/test/rowvalue.test
+++ b/test/rowvalue.test
@@ -657,4 +657,10 @@ do_catchsql_test 28.10 {
   DELETE FROM t0;
 } {1 {sub-select returns 2 columns - expected 1}}
 
+# 2021-03-19
+# dbsqlfuzz find of a NEVER().
+do_catchsql_test 29.1 {
+  SELECT (SELECT 1 WHERE ((SELECT 1 WHERE (2,(2,0)) IS (2,(20))),(2,0)) IS (2,(20))) WHERE (2,(2,0)) IS (2 IN(SELECT 1 WHERE (2,(2,2,0)) IS (2,(20))),(20));
+} {1 {row value misused}}
+
 finish_test
diff --git a/test/upsert5.test b/test/upsert5.test
index c4747ddf18..3161abf15e 100644
--- a/test/upsert5.test
+++ b/test/upsert5.test
@@ -394,4 +394,18 @@ foreach {tn sql} {
 
 }
 
+#--------------------------------------------------------------------------
+reset_db
+do_execsql_test 2.0 {
+  CREATE TABLE t2(a, b, c REAL, d, e, PRIMARY KEY(a,b)) WITHOUT ROWID;
+  CREATE UNIQUE INDEX t2c ON t2(c);
+}
+
+do_catchsql_test 2.1 {
+  INSERT INTO t2(a,b,c,e,d) VALUES(1,2,3,4,5)
+      ON CONFLICT(c) DO UPDATE SET b=''
+      ON CONFLICT((SELECT t2 FROM nosuchtable)) DO NOTHING;
+
+} {1 {no such table: nosuchtable}}
+
 finish_test
diff --git a/test/with2.test b/test/with2.test
index 9654619b2c..1051c6fb17 100644
--- a/test/with2.test
+++ b/test/with2.test
@@ -533,4 +533,20 @@ do_execsql_test 9.2 {
 } {}
 } ;# end ifcapable vtab
 
+# 2021-03-19
+# dbsqlfuzz 01b8355086998f0a452cb31208e80b9d29ca739a
+#
+# Correlated CTEs should not be materialized.
+#
+reset_db
+do_execsql_test 10.1 {
+  SELECT 1 AS c WHERE (
+    SELECT (
+      WITH t1(a) AS (VALUES( c ))
+      SELECT ( SELECT t1a.a FROM t1 AS t1a, t1 AS t1x )
+      FROM t1 AS xyz GROUP BY 1
+    )
+  )
+} {1}
+
 finish_test