Add test cases showing the use of ORDER BY on a recursive query to control
depth-first versus breath-first search of a tree. FossilOrigin-Name: 83b0b2916589db0184435dbd4c304387f393ed60
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drh
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14
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@ -1,5 +1,5 @@
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C Modifications\sto\stest\sfiles\sto\somit\sany\stests\sthat\sintentionally\saccess\sout-of-bounds\slocations\sin\sclang\s-fsanitize=address\sbuilds.
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D 2014-01-23T14:44:08.207
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C Add\stest\scases\sshowing\sthe\suse\sof\sORDER\sBY\son\sa\srecursive\squery\sto\scontrol\ndepth-first\sversus\sbreath-first\ssearch\sof\sa\stree.
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D 2014-01-24T11:16:01.884
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F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
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F Makefile.in 2ef13430cd359f7b361bb863504e227b25cc7f81
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F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
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@ -1092,7 +1092,7 @@ F test/wild001.test bca33f499866f04c24510d74baf1e578d4e44b1c
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F test/win32heap.test ea19770974795cff26e11575e12d422dbd16893c
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F test/win32lock.test 7a6bd73a5dcdee39b5bb93e92395e1773a194361
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F test/win32longpath.test 169c75a3b2e43481f4a62122510210c67b08f26d
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F test/with1.test 97166cc72de5327bbae782aece707c45ee40e41b
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F test/with1.test 9d3537372c8cf6d5e0a5e9af037a52f3375fb704
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F test/with2.test 2fe78fcd8deef2a0f9cfc49bfc755911d0b3fd64
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F test/withM.test e97f2a8c506ab3ea9eab94e6f6072f6cc924c991
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F test/without_rowid1.test aaa26da19d543cd8d3d2d0e686dfa255556c15c8
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@ -1152,7 +1152,7 @@ F tool/vdbe-compress.tcl 0cf56e9263a152b84da86e75a5c0cdcdb7a47891
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F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
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F tool/warnings.sh d1a6de74685f360ab718efda6265994b99bbea01
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F tool/win/sqlite.vsix 030f3eeaf2cb811a3692ab9c14d021a75ce41fff
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P 72c4b3f07a3faacb5b62d5bc374b4e125a0bd8b3
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R 1a965aa9944d1df45f2b3d9d29de01da
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U dan
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Z 5e3d3ac89b5b8048d3858093fe9eb7e9
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P f4a701d55f5c4e1e62ed64b779ad4fff89dd31b7
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R 15c1d48ec007e0818a79a87f9c81fe3d
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U drh
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Z a61c87789af8810b68d544f76885410e
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@ -1 +1 @@
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f4a701d55f5c4e1e62ed64b779ad4fff89dd31b7
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83b0b2916589db0184435dbd4c304387f393ed60
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123
test/with1.test
123
test/with1.test
@ -374,7 +374,7 @@ do_catchsql_test 7.6 {
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# Compute the mandelbrot set using a recursive query
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#
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do_execsql_test 8.1 {
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do_execsql_test 8.1-mandelbrot {
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WITH RECURSIVE
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xaxis(x) AS (VALUES(-2.0) UNION ALL SELECT x+0.05 FROM xaxis WHERE x<1.2),
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yaxis(y) AS (VALUES(-1.0) UNION ALL SELECT y+0.1 FROM yaxis WHERE y<1.0),
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@ -417,7 +417,7 @@ do_execsql_test 8.1 {
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# Solve a sudoku puzzle using a recursive query
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#
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do_execsql_test 8.2 {
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do_execsql_test 8.2-soduko {
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WITH RECURSIVE
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input(sud) AS (
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VALUES('53..7....6..195....98....6.8...6...34..8.3..17...2...6.6....28....419..5....8..79')
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@ -452,4 +452,123 @@ do_execsql_test 8.2 {
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SELECT s FROM x WHERE ind=0;
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} {534678912672195348198342567859761423426853791713924856961537284287419635345286179}
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# Test cases to illustrate on the ORDER BY clause on a recursive query can be
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# used to control depth-first versus breath-first search in a tree.
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#
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do_execsql_test 9.1 {
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CREATE TABLE org(
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name TEXT PRIMARY KEY,
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boss TEXT REFERENCES org
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) WITHOUT ROWID;
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INSERT INTO org VALUES('Alice',NULL);
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INSERT INTO org VALUES('Bob','Alice');
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INSERT INTO org VALUES('Cindy','Alice');
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INSERT INTO org VALUES('Dave','Bob');
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INSERT INTO org VALUES('Emma','Bob');
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INSERT INTO org VALUES('Fred','Cindy');
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INSERT INTO org VALUES('Gail','Cindy');
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INSERT INTO org VALUES('Harry','Dave');
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INSERT INTO org VALUES('Ingrid','Dave');
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INSERT INTO org VALUES('Jim','Emma');
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INSERT INTO org VALUES('Kate','Emma');
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INSERT INTO org VALUES('Lanny','Fred');
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INSERT INTO org VALUES('Mary','Fred');
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INSERT INTO org VALUES('Noland','Gail');
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INSERT INTO org VALUES('Olivia','Gail');
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-- The above are all under Alice. Add a few more records for people
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-- not in Alice's group, just to prove that they won't be selected.
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INSERT INTO org VALUES('Xaviar',NULL);
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INSERT INTO org VALUES('Xia','Xaviar');
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INSERT INTO org VALUES('Xerxes','Xaviar');
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INSERT INTO org VALUES('Xena','Xia');
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-- Find all members of Alice's group, breath-first order
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WITH RECURSIVE
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under_alice(name,level) AS (
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VALUES('Alice','0')
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UNION ALL
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SELECT org.name, under_alice.level+1
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FROM org, under_alice
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WHERE org.boss=under_alice.name
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ORDER BY 2
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)
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SELECT group_concat(substr('...............',1,level*3) || name,x'0a')
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FROM under_alice;
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} {{Alice
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...Bob
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...Cindy
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......Dave
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......Emma
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......Fred
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......Gail
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.........Harry
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.........Ingrid
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.........Jim
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.........Kate
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.........Lanny
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.........Mary
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.........Noland
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.........Olivia}}
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# The previous query used "ORDER BY level" to yield a breath-first search.
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# Change that to "ORDER BY level DESC" for a depth-first search.
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#
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do_execsql_test 9.2 {
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WITH RECURSIVE
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under_alice(name,level) AS (
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VALUES('Alice','0')
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UNION ALL
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SELECT org.name, under_alice.level+1
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FROM org, under_alice
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WHERE org.boss=under_alice.name
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ORDER BY 2 DESC
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)
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SELECT group_concat(substr('...............',1,level*3) || name,x'0a')
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FROM under_alice;
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} {{Alice
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...Bob
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......Dave
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.........Harry
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.........Ingrid
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......Emma
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.........Jim
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.........Kate
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...Cindy
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......Fred
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.........Lanny
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.........Mary
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......Gail
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.........Noland
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.........Olivia}}
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# Without an ORDER BY clause, the recursive query should use a FIFO,
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# resulting in a breath-first search.
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#
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do_execsql_test 9.3 {
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WITH RECURSIVE
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under_alice(name,level) AS (
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VALUES('Alice','0')
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UNION ALL
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SELECT org.name, under_alice.level+1
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FROM org, under_alice
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WHERE org.boss=under_alice.name
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)
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SELECT group_concat(substr('...............',1,level*3) || name,x'0a')
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FROM under_alice;
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} {{Alice
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...Bob
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...Cindy
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......Dave
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......Emma
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......Fred
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......Gail
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.........Harry
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.........Ingrid
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.........Jim
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.........Kate
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.........Lanny
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.........Mary
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.........Noland
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.........Olivia}}
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finish_test
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