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| 1 # 2016 June 17 |
| 2 # |
| 3 # The author disclaims copyright to this source code. In place of |
| 4 # a legal notice, here is a blessing: |
| 5 # |
| 6 # May you do good and not evil. |
| 7 # May you find forgiveness for yourself and forgive others. |
| 8 # May you share freely, never taking more than you give. |
| 9 # |
| 10 #*********************************************************************** |
| 11 # This file implements regression tests for SQLite library. The |
| 12 # focus is on testing that cursor-hints are correct for queries |
| 13 # involving LEFT JOIN. |
| 14 # |
| 15 |
| 16 |
| 17 set testdir [file dirname $argv0] |
| 18 source $testdir/tester.tcl |
| 19 set ::testprefix cursorhint2 |
| 20 |
| 21 ifcapable !cursorhints { |
| 22 finish_test |
| 23 return |
| 24 } |
| 25 |
| 26 proc extract_hints {sql} { |
| 27 |
| 28 db eval "SELECT tbl_name, rootpage FROM sqlite_master where rootpage" { |
| 29 set lookup($rootpage) $tbl_name |
| 30 } |
| 31 |
| 32 set ret [list] |
| 33 db eval "EXPLAIN $sql" a { |
| 34 switch -- $a(opcode) { |
| 35 OpenRead { |
| 36 set csr($a(p1)) $lookup($a(p2)) |
| 37 } |
| 38 CursorHint { |
| 39 lappend ret $csr($a(p1)) $a(p4) |
| 40 } |
| 41 } |
| 42 } |
| 43 |
| 44 set ret |
| 45 } |
| 46 |
| 47 proc do_extract_hints_test {tn sql ret} { |
| 48 uplevel [list do_test $tn [list extract_hints $sql] [list {*}$ret]] |
| 49 } |
| 50 |
| 51 do_execsql_test 1.0 { |
| 52 PRAGMA automatic_index = 0; |
| 53 CREATE TABLE t1(a, b); |
| 54 CREATE TABLE t2(c, d); |
| 55 CREATE TABLE t3(e, f); |
| 56 } |
| 57 |
| 58 do_extract_hints_test 1.1 { |
| 59 SELECT * FROM t1 WHERE a=1; |
| 60 } { |
| 61 t1 EQ(c0,1) |
| 62 } |
| 63 |
| 64 do_extract_hints_test 1.2 { |
| 65 SELECT * FROM t1 CROSS JOIN t2 ON (a=c) WHERE d IS NULL; |
| 66 } { |
| 67 t2 {AND(ISNULL(c1),EQ(r[1],c0))} |
| 68 } |
| 69 |
| 70 do_extract_hints_test 1.3 { |
| 71 SELECT * FROM t1 LEFT JOIN t2 ON (a=c) WHERE d IS NULL; |
| 72 } { |
| 73 t2 {EQ(r[2],c0)} |
| 74 } |
| 75 |
| 76 do_extract_hints_test 1.4 { |
| 77 SELECT * FROM t1 LEFT JOIN t2 ON (a=c AND a=10) WHERE d IS NULL; |
| 78 } { |
| 79 t2 {AND(EQ(r[2],c0),EQ(r[3],10))} |
| 80 } |
| 81 |
| 82 do_extract_hints_test 1.5 { |
| 83 SELECT * FROM t1 CROSS JOIN t2 ON (a=c AND a=10) WHERE d IS NULL; |
| 84 } { |
| 85 t1 EQ(c0,10) t2 {AND(ISNULL(c1),EQ(r[3],c0))} |
| 86 } |
| 87 |
| 88 do_extract_hints_test 1.6 { |
| 89 SELECT * FROM t1 LEFT JOIN t2 ON (a=c) LEFT JOIN t3 ON (d=f); |
| 90 } { |
| 91 t2 {EQ(r[2],c0)} t3 {EQ(r[6],c1)} |
| 92 } |
| 93 |
| 94 if 0 { |
| 95 do_extract_hints_test 1.7 { |
| 96 SELECT * FROM t1 LEFT JOIN t2 ON (a=c AND d=e) LEFT JOIN t3 ON (d=f); |
| 97 } { |
| 98 t2 {EQ(r[2],c0)} t3 {AND(EQ(r[6],c0),EQ(r[7],c1))} |
| 99 } |
| 100 } |
| 101 |
| 102 #------------------------------------------------------------------------- |
| 103 # |
| 104 do_execsql_test 2.0 { |
| 105 CREATE TABLE x1(x, y); |
| 106 CREATE TABLE x2(a, b); |
| 107 } |
| 108 |
| 109 do_extract_hints_test 2.1 { |
| 110 SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE b IS NULL; |
| 111 } { |
| 112 x2 {EQ(c0,r[2])} |
| 113 } |
| 114 |
| 115 do_extract_hints_test 2.2 { |
| 116 SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE b IS +NULL; |
| 117 } { |
| 118 x2 {EQ(c0,r[2])} |
| 119 } |
| 120 |
| 121 do_extract_hints_test 2.3 { |
| 122 SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE 1 = (b IS NULL) |
| 123 } { |
| 124 x2 {EQ(c0,r[2])} |
| 125 } |
| 126 |
| 127 do_extract_hints_test 2.4 { |
| 128 SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE 1 = coalesce(b, 1) |
| 129 } { |
| 130 x2 {EQ(c0,r[2])} |
| 131 } |
| 132 |
| 133 do_extract_hints_test 2.5 { |
| 134 SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE 1 = coalesce(b, 1) |
| 135 } { |
| 136 x2 {EQ(c0,r[2])} |
| 137 } |
| 138 |
| 139 do_extract_hints_test 2.6 { |
| 140 SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE 0 = (b IS NOT NULL) |
| 141 } { |
| 142 x2 {EQ(c0,r[2])} |
| 143 } |
| 144 |
| 145 do_extract_hints_test 2.7 { |
| 146 SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE 0 = (b IS NOT +NULL) |
| 147 } { |
| 148 x2 {EQ(c0,r[2])} |
| 149 } |
| 150 |
| 151 do_extract_hints_test 2.8 { |
| 152 SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE b IS NOT +NULL |
| 153 } { |
| 154 x2 {EQ(c0,r[2])} |
| 155 } |
| 156 |
| 157 do_extract_hints_test 2.9 { |
| 158 SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE CASE b WHEN 0 THEN 0 ELSE 1 END; |
| 159 } { |
| 160 x2 {EQ(c0,r[2])} |
| 161 } |
| 162 |
| 163 do_extract_hints_test 2.10 { |
| 164 SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE x2.b = 32+32 |
| 165 } { |
| 166 x2 {AND(EQ(c1,ADD(32,32)),EQ(c0,r[2]))} |
| 167 } |
| 168 |
| 169 ifcapable !icu { |
| 170 # This test only works using the built-in LIKE, not the ICU LIKE extension. |
| 171 do_extract_hints_test 2.11 { |
| 172 SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE x2.b LIKE 'abc%' |
| 173 } { |
| 174 x2 {AND(expr,EQ(c0,r[2]))} |
| 175 } |
| 176 } |
| 177 |
| 178 do_extract_hints_test 2.12 { |
| 179 SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE coalesce(x2.b, 1) |
| 180 } { |
| 181 x2 {EQ(c0,r[2])} |
| 182 } |
| 183 |
| 184 finish_test |
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