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Overview
Comment: | Add tests for ORDER BY clauses to e_select.test. |
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14f156632729d1a44ef234f39ff9df32 |
User & Date: | dan 2010-09-15 19:02:15.000 |
Context
2010-09-15
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23:41 | Updates to the sqlite3_progress_handler() documentation. (check-in: 78f659ee9b user: drh tags: trunk) | |
19:02 | Add tests for ORDER BY clauses to e_select.test. (check-in: 14f1566327 user: dan tags: trunk) | |
17:54 | Added the sqlite3_soft_heap_limit64() interface. Deprecate the older sqlite3_soft_heap_limit() interface. (check-in: 82268a2c3d user: drh tags: trunk) | |
Changes
Changes to test/e_select.test.
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2005 2006 2007 2008 2009 2010 2011 2012 | 7 "(2,3) EXCEPT (2) EXCEPT (3)" {} } { set select [string map {( {SELECT x FROM t1 WHERE x IN (}} $select] do_execsql_test e_select-7.12.$tn $select [list {*}$res] } finish_test | > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 | 7 "(2,3) EXCEPT (2) EXCEPT (3)" {} } { set select [string map {( {SELECT x FROM t1 WHERE x IN (}} $select] do_execsql_test e_select-7.12.$tn $select [list {*}$res] } #------------------------------------------------------------------------- # ORDER BY clauses # drop_all_tables do_execsql_test e_select-8.1.0 { CREATE TABLE d1(x, y, z); INSERT INTO d1 VALUES(1, 2, 3); INSERT INTO d1 VALUES(2, 5, -1); INSERT INTO d1 VALUES(1, 2, 8); INSERT INTO d1 VALUES(1, 2, 7); INSERT INTO d1 VALUES(2, 4, 93); INSERT INTO d1 VALUES(1, 2, -20); INSERT INTO d1 VALUES(1, 4, 93); INSERT INTO d1 VALUES(1, 5, -1); CREATE TABLE d2(a, b); INSERT INTO d2 VALUES('gently', 'failings'); INSERT INTO d2 VALUES('commercials', 'bathrobe'); INSERT INTO d2 VALUES('iterate', 'sexton'); INSERT INTO d2 VALUES('babied', 'charitableness'); INSERT INTO d2 VALUES('solemnness', 'annexed'); INSERT INTO d2 VALUES('rejoicing', 'liabilities'); INSERT INTO d2 VALUES('pragmatist', 'guarded'); INSERT INTO d2 VALUES('barked', 'interrupted'); INSERT INTO d2 VALUES('reemphasizes', 'reply'); INSERT INTO d2 VALUES('lad', 'relenting'); } {} # EVIDENCE-OF: R-44988-41064 Rows are first sorted based on the results # of evaluating the left-most expression in the ORDER BY list, then ties # are broken by evaluating the second left-most expression and so on. # foreach {tn select res} { 1 "SELECT * FROM d1 ORDER BY x, y, z" { 1 2 -20 1 2 3 1 2 7 1 2 8 1 4 93 1 5 -1 2 4 93 2 5 -1 } } { do_execsql_test e_select-8.1.$tn $select [list {*}$res] } # EVIDENCE-OF: R-06617-54588 Each ORDER BY expression may be optionally # followed by one of the keywords ASC (smaller values are returned # first) or DESC (larger values are returned first). # # Test cases e_select-8.2.* test the above. # # EVIDENCE-OF: R-18705-33393 If neither ASC or DESC are specified, rows # are sorted in ascending (smaller values first) order by default. # # Test cases e_select-8.3.* test the above. All 8.3 test cases are # copies of 8.2 test cases with the explicit "ASC" removed. # foreach {tn select res} { 2.1 "SELECT * FROM d1 ORDER BY x ASC, y ASC, z ASC" { 1 2 -20 1 2 3 1 2 7 1 2 8 1 4 93 1 5 -1 2 4 93 2 5 -1 } 2.2 "SELECT * FROM d1 ORDER BY x DESC, y DESC, z DESC" { 2 5 -1 2 4 93 1 5 -1 1 4 93 1 2 8 1 2 7 1 2 3 1 2 -20 } 2.3 "SELECT * FROM d1 ORDER BY x DESC, y ASC, z DESC" { 2 4 93 2 5 -1 1 2 8 1 2 7 1 2 3 1 2 -20 1 4 93 1 5 -1 } 2.4 "SELECT * FROM d1 ORDER BY x DESC, y ASC, z ASC" { 2 4 93 2 5 -1 1 2 -20 1 2 3 1 2 7 1 2 8 1 4 93 1 5 -1 } 3.1 "SELECT * FROM d1 ORDER BY x, y, z" { 1 2 -20 1 2 3 1 2 7 1 2 8 1 4 93 1 5 -1 2 4 93 2 5 -1 } 3.3 "SELECT * FROM d1 ORDER BY x DESC, y, z DESC" { 2 4 93 2 5 -1 1 2 8 1 2 7 1 2 3 1 2 -20 1 4 93 1 5 -1 } 3.4 "SELECT * FROM d1 ORDER BY x DESC, y, z" { 2 4 93 2 5 -1 1 2 -20 1 2 3 1 2 7 1 2 8 1 4 93 1 5 -1 } } { do_execsql_test e_select-8.$tn $select [list {*}$res] } # EVIDENCE-OF: R-29779-04281 If the ORDER BY expression is a constant # integer K then the expression is considered an alias for the K-th # column of the result set (columns are numbered from left to right # starting with 1). # foreach {tn select res} { 1 "SELECT * FROM d1 ORDER BY 1 ASC, 2 ASC, 3 ASC" { 1 2 -20 1 2 3 1 2 7 1 2 8 1 4 93 1 5 -1 2 4 93 2 5 -1 } 2 "SELECT * FROM d1 ORDER BY 1 DESC, 2 DESC, 3 DESC" { 2 5 -1 2 4 93 1 5 -1 1 4 93 1 2 8 1 2 7 1 2 3 1 2 -20 } 3 "SELECT * FROM d1 ORDER BY 1 DESC, 2 ASC, 3 DESC" { 2 4 93 2 5 -1 1 2 8 1 2 7 1 2 3 1 2 -20 1 4 93 1 5 -1 } 4 "SELECT * FROM d1 ORDER BY 1 DESC, 2 ASC, 3 ASC" { 2 4 93 2 5 -1 1 2 -20 1 2 3 1 2 7 1 2 8 1 4 93 1 5 -1 } 5 "SELECT * FROM d1 ORDER BY 1, 2, 3" { 1 2 -20 1 2 3 1 2 7 1 2 8 1 4 93 1 5 -1 2 4 93 2 5 -1 } 6 "SELECT * FROM d1 ORDER BY 1 DESC, 2, 3 DESC" { 2 4 93 2 5 -1 1 2 8 1 2 7 1 2 3 1 2 -20 1 4 93 1 5 -1 } 7 "SELECT * FROM d1 ORDER BY 1 DESC, 2, 3" { 2 4 93 2 5 -1 1 2 -20 1 2 3 1 2 7 1 2 8 1 4 93 1 5 -1 } 8 "SELECT z, x FROM d1 ORDER BY 2" { 3 1 8 1 7 1 -20 1 93 1 -1 1 -1 2 93 2 } 9 "SELECT z, x FROM d1 ORDER BY 1" { -20 1 -1 2 -1 1 3 1 7 1 8 1 93 2 93 1 } } { do_execsql_test e_select-8.4.$tn $select [list {*}$res] } # EVIDENCE-OF: R-63286-51977 If the ORDER BY expression is an identifier # that corresponds to the alias of one of the output columns, then the # expression is considered an alias for that column. # foreach {tn select res} { 1 "SELECT z+1 AS abc FROM d1 ORDER BY abc" { -19 0 0 4 8 9 94 94 } 2 "SELECT z+1 AS abc FROM d1 ORDER BY abc DESC" { 94 94 9 8 4 0 0 -19 } 3 "SELECT z AS x, x AS z FROM d1 ORDER BY z" { 3 1 8 1 7 1 -20 1 93 1 -1 1 -1 2 93 2 } 4 "SELECT z AS x, x AS z FROM d1 ORDER BY x" { -20 1 -1 2 -1 1 3 1 7 1 8 1 93 2 93 1 } } { do_execsql_test e_select-8.5.$tn $select [list {*}$res] } # EVIDENCE-OF: R-27923-38747 Otherwise, if the ORDER BY expression is # any other expression, it is evaluated and the the returned value used # to order the output rows. # # EVIDENCE-OF: R-03421-57988 If the SELECT statement is a simple SELECT, # then an ORDER BY may contain any arbitrary expressions. # foreach {tn select res} { 1 "SELECT * FROM d1 ORDER BY x+y+z" { 1 2 -20 1 5 -1 1 2 3 2 5 -1 1 2 7 1 2 8 1 4 93 2 4 93 } 2 "SELECT * FROM d1 ORDER BY x*z" { 1 2 -20 2 5 -1 1 5 -1 1 2 3 1 2 7 1 2 8 1 4 93 2 4 93 } 3 "SELECT * FROM d1 ORDER BY y*z" { 1 2 -20 2 5 -1 1 5 -1 1 2 3 1 2 7 1 2 8 2 4 93 1 4 93 } } { do_execsql_test e_select-8.6.$tn $select [list {*}$res] } # EVIDENCE-OF: R-28853-08147 However, if the SELECT is a compound # SELECT, then ORDER BY expressions that are not aliases to output # columns must be exactly the same as an expression used as an output # column. # foreach {tn select violation} { 1 "SELECT x FROM d1 UNION ALL SELECT a FROM d2 ORDER BY x*z" 1st 2 "SELECT x,z FROM d1 UNION ALL SELECT a,b FROM d2 ORDER BY x, x/z" 2nd } { set err "$violation ORDER BY term does not match any column in the result set" do_catchsql_test e_select-8.7.1.$tn $select [list 1 $err] } foreach {tn select res} { 1 "SELECT x*z FROM d1 UNION ALL SELECT a FROM d2 ORDER BY x*z" { -20 -2 -1 3 7 8 93 186 babied barked commercials gently iterate lad pragmatist reemphasizes rejoicing solemnness } 2 "SELECT x, x/z FROM d1 UNION ALL SELECT a,b FROM d2 ORDER BY x, x/z" { 1 -1 1 0 1 0 1 0 1 0 1 0 2 -2 2 0 babied charitableness barked interrupted commercials bathrobe gently failings iterate sexton lad relenting pragmatist guarded reemphasizes reply rejoicing liabilities solemnness annexed } } { do_execsql_test e_select-8.7.2.$tn $select [list {*}$res] } do_execsql_test e_select-8.8.0 { CREATE TABLE d3(a); INSERT INTO d3 VALUES('text'); INSERT INTO d3 VALUES(14.1); INSERT INTO d3 VALUES(13); INSERT INTO d3 VALUES(X'78787878'); INSERT INTO d3 VALUES(15); INSERT INTO d3 VALUES(12.9); INSERT INTO d3 VALUES(null); CREATE TABLE d4(x COLLATE nocase); INSERT INTO d4 VALUES('abc'); INSERT INTO d4 VALUES('ghi'); INSERT INTO d4 VALUES('DEF'); INSERT INTO d4 VALUES('JKL'); } {} # EVIDENCE-OF: R-10883-17697 For the purposes of sorting rows, values # are compared in the same way as for comparison expressions. # # The following tests verify that values of different types are sorted # correctly, and that mixed real and integer values are compared properly. # do_execsql_test e_select-8.8.1 { SELECT a FROM d3 ORDER BY a } {{} 12.9 13 14.1 15 text xxxx} do_execsql_test e_select-8.8.2 { SELECT a FROM d3 ORDER BY a DESC } {xxxx text 15 14.1 13 12.9 {}} # EVIDENCE-OF: R-64199-22471 If the ORDER BY expression is assigned a # collation sequence using the postfix COLLATE operator, then the # specified collation sequence is used. # do_execsql_test e_select-8.9.1 { SELECT x FROM d4 ORDER BY 1 COLLATE binary } {DEF JKL abc ghi} do_execsql_test e_select-8.9.2 { SELECT x COLLATE binary FROM d4 ORDER BY 1 COLLATE nocase } {abc DEF ghi JKL} # EVIDENCE-OF: R-09398-26102 Otherwise, if the ORDER BY expression is # an alias to an expression that has been assigned a collation sequence # using the postfix COLLATE operator, then the collation sequence # assigned to the aliased expression is used. # # In the test 8.10.2, the only result-column expression has no alias. So the # ORDER BY expression is not a reference to it and therefore does not inherit # the collation sequence. In test 8.10.3, "x" is the alias (as well as the # column name), so the ORDER BY expression is interpreted as an alias and the # collation sequence attached to the result column is used for sorting. # do_execsql_test e_select-8.10.1 { SELECT x COLLATE binary FROM d4 ORDER BY 1 } {DEF JKL abc ghi} do_execsql_test e_select-8.10.2 { SELECT x COLLATE binary FROM d4 ORDER BY x } {abc DEF ghi JKL} do_execsql_test e_select-8.10.3 { SELECT x COLLATE binary AS x FROM d4 ORDER BY x } {DEF JKL abc ghi} # EVIDENCE-OF: R-27301-09658 Otherwise, if the ORDER BY expression is a # column or an alias of an expression that is a column, then the default # collation sequence for the column is used. # do_execsql_test e_select-8.11.1 { SELECT x AS y FROM d4 ORDER BY y } {abc DEF ghi JKL} do_execsql_test e_select-8.11.2 { SELECT x||'' FROM d4 ORDER BY x } {abc DEF ghi JKL} # EVIDENCE-OF: R-49925-55905 Otherwise, the BINARY collation sequence is # used. # do_execsql_test e_select-8.12.1 { SELECT x FROM d4 ORDER BY x||'' } {DEF JKL abc ghi} finish_test |