1# 2021 February 16 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# 12 13set testdir [file dirname $argv0] 14source $testdir/tester.tcl 15set testprefix alterdropcol 16 17# If SQLITE_OMIT_ALTERTABLE is defined, omit this file. 18ifcapable !altertable { 19 finish_test 20 return 21} 22 23do_execsql_test 1.0 { 24 CREATE TABLE t1(a, b, c); 25 CREATE VIEW v1 AS SELECT * FROM t1; 26 27 CREATE TABLE t2(x INTEGER PRIMARY KEY, y, z UNIQUE); 28 CREATE INDEX t2y ON t2(y); 29 30 CREATE TABLE t3(q, r, s); 31 CREATE INDEX t3rs ON t3(r+s); 32} 33 34do_catchsql_test 1.1 { 35 ALTER TABLE nosuch DROP COLUMN z; 36} {1 {no such table: nosuch}} 37 38do_catchsql_test 1.2 { 39 ALTER TABLE v1 DROP COLUMN c; 40} {1 {cannot drop column from view "v1"}} 41 42ifcapable fts5 { 43 do_execsql_test 1.3.1 { 44 CREATE VIRTUAL TABLE ft1 USING fts5(one, two); 45 } 46 do_catchsql_test 1.3.2 { 47 ALTER TABLE ft1 DROP COLUMN two; 48 } {1 {cannot drop column from virtual table "ft1"}} 49} 50 51do_catchsql_test 1.4 { 52 ALTER TABLE sqlite_schema DROP COLUMN sql; 53} {1 {table sqlite_master may not be altered}} 54 55do_catchsql_test 1.5 { 56 ALTER TABLE t1 DROP COLUMN d; 57} {1 {no such column: "d"}} 58 59do_execsql_test 1.6.1 { 60 ALTER TABLE t1 DROP COLUMN b; 61} 62do_execsql_test 1.6.2 { 63 SELECT sql FROM sqlite_schema WHERE name = 't1' 64} {{CREATE TABLE t1(a, c)}} 65 66do_execsql_test 1.7.1 { 67 ALTER TABLE t1 DROP COLUMN c; 68} 69do_execsql_test 1.7.2 { 70 SELECT sql FROM sqlite_schema WHERE name = 't1' 71} {{CREATE TABLE t1(a)}} 72 73do_catchsql_test 1.7.3 { 74 ALTER TABLE t1 DROP COLUMN a; 75} {1 {cannot drop column "a": no other columns exist}} 76 77 78do_catchsql_test 1.8 { 79 ALTER TABLE t2 DROP COLUMN z 80} {1 {cannot drop UNIQUE column: "z"}} 81 82do_catchsql_test 1.9 { 83 ALTER TABLE t2 DROP COLUMN x 84} {1 {cannot drop PRIMARY KEY column: "x"}} 85 86do_catchsql_test 1.10 { 87 ALTER TABLE t2 DROP COLUMN y 88} {1 {error in index t2y after drop column: no such column: y}} 89 90do_catchsql_test 1.11 { 91 ALTER TABLE t3 DROP COLUMN s 92} {1 {error in index t3rs after drop column: no such column: s}} 93 94#------------------------------------------------------------------------- 95 96foreach {tn wo} { 97 1 {} 98 2 {WITHOUT ROWID} 99} { eval [string map [list %TN% $tn %WO% $wo] { 100 101 reset_db 102 do_execsql_test 2.%TN%.0 { 103 CREATE TABLE t1(x, y INTEGER PRIMARY KEY, z) %WO% ; 104 INSERT INTO t1 VALUES(1, 2, 3); 105 INSERT INTO t1 VALUES(4, 5, 6); 106 INSERT INTO t1 VALUES(7, 8, 9); 107 } 108 109 do_execsql_test 2.%TN%.1 { 110 ALTER TABLE t1 DROP COLUMN x; 111 SELECT * FROM t1; 112 } { 113 2 3 5 6 8 9 114 } 115 do_execsql_test 2.%TN%.2 { 116 ALTER TABLE t1 DROP COLUMN z; 117 SELECT * FROM t1; 118 } { 119 2 5 8 120 } 121}]} 122 123#------------------------------------------------------------------------- 124reset_db 125 126do_execsql_test 3.0 { 127 CREATE TABLE t12(a, b, c, CHECK(c>10)); 128 CREATE TABLE t13(a, b, c CHECK(c>10)); 129} 130do_catchsql_test 3.1 { 131 ALTER TABLE t12 DROP COLUMN c; 132} {1 {error in table t12 after drop column: no such column: c}} 133 134do_catchsql_test 3.2 { 135 ALTER TABLE t13 DROP COLUMN c; 136} {0 {}} 137 138#------------------------------------------------------------------------- 139# Test that generated columns can be dropped. And that other columns from 140# tables that contain generated columns can be dropped. 141# 142foreach {tn wo vs} { 143 1 "" "" 144 2 "" VIRTUAL 145 3 "" STORED 146 4 "WITHOUT ROWID" STORED 147 5 "WITHOUT ROWID" VIRTUAL 148} { 149 reset_db 150 151 do_execsql_test 4.$tn.0 " 152 CREATE TABLE 'my table'(a, b PRIMARY KEY, c AS (a+b) $vs, d) $wo 153 " 154 do_execsql_test 4.$tn.1 { 155 INSERT INTO "my table"(a, b, d) VALUES(1, 2, 'hello'); 156 INSERT INTO "my table"(a, b, d) VALUES(3, 4, 'world'); 157 158 SELECT * FROM "my table" 159 } { 160 1 2 3 hello 161 3 4 7 world 162 } 163 164 do_execsql_test 4.$tn.2 { 165 ALTER TABLE "my table" DROP COLUMN c; 166 } 167 do_execsql_test 4.$tn.3 { 168 SELECT * FROM "my table" 169 } { 170 1 2 hello 171 3 4 world 172 } 173 174 do_execsql_test 4.$tn.4 " 175 CREATE TABLE x1(a, b, c PRIMARY KEY, d AS (b+c) $vs, e) $wo 176 " 177 do_execsql_test 4.$tn.5 { 178 INSERT INTO x1(a, b, c, e) VALUES(1, 2, 3, 4); 179 INSERT INTO x1(a, b, c, e) VALUES(5, 6, 7, 8); 180 INSERT INTO x1(a, b, c, e) VALUES(9, 10, 11, 12); 181 SELECT * FROM x1; 182 } { 183 1 2 3 5 4 184 5 6 7 13 8 185 9 10 11 21 12 186 } 187 188 do_execsql_test 4.$tn.6 { 189 ALTER TABLE x1 DROP COLUMN a 190 } 191 do_execsql_test 4.$tn.7 { 192 SELECT * FROM x1 193 } { 194 2 3 5 4 195 6 7 13 8 196 10 11 21 12 197 } 198 do_execsql_test 4.$tn.8 { 199 ALTER TABLE x1 DROP COLUMN e 200 } 201 do_execsql_test 4.$tn.9 { 202 SELECT * FROM x1 203 } { 204 2 3 5 205 6 7 13 206 10 11 21 207 } 208} 209 210#------------------------------------------------------------------------- 211reset_db 212do_execsql_test 5.0 { 213 CREATE TABLE p1(a PRIMARY KEY, b UNIQUE); 214 CREATE TABLE c1(x, y, z REFERENCES p1(c)); 215 CREATE TABLE c2(x, y, z, w REFERENCES p1(b)); 216} 217do_execsql_test 5.1 { 218 ALTER TABLE c1 DROP COLUMN z; 219 ALTER TABLE c2 DROP COLUMN z; 220 SELECT sql FROM sqlite_schema WHERE name IN ('c1', 'c2'); 221} { 222 {CREATE TABLE c1(x, y)} 223 {CREATE TABLE c2(x, y, w REFERENCES p1(b))} 224} 225 226do_execsql_test 5.2.1 { 227 CREATE VIEW v1 AS SELECT d, e FROM p1 228} 229do_catchsql_test 5.2.2 { 230 ALTER TABLE c1 DROP COLUMN x 231} {1 {error in view v1: no such column: d}} 232do_execsql_test 5.3.1 { 233 DROP VIEW v1; 234 CREATE VIEW v1 AS SELECT x, y FROM c1; 235} 236do_catchsql_test 5.3.2 { 237 ALTER TABLE c1 DROP COLUMN x 238} {1 {error in view v1 after drop column: no such column: x}} 239 240do_execsql_test 5.4.1 { 241 CREATE TRIGGER tr AFTER INSERT ON c1 BEGIN 242 INSERT INTO p1 VALUES(new.y, new.xyz); 243 END; 244} 245do_catchsql_test 5.4.2 { 246 ALTER TABLE c1 DROP COLUMN y 247} {1 {error in trigger tr: no such column: new.xyz}} 248do_execsql_test 5.5.1 { 249 DROP TRIGGER tr; 250 CREATE TRIGGER tr AFTER INSERT ON c1 BEGIN 251 INSERT INTO p1 VALUES(new.y, new.z); 252 END; 253} 254do_catchsql_test 5.5.2 { 255 ALTER TABLE c1 DROP COLUMN y 256} {1 {error in trigger tr: no such column: new.z}} 257 258# 2021-03-06 dbsqlfuzz crash-419aa525df93db6e463772c686ac6da27b46da9e 259reset_db 260do_catchsql_test 6.0 { 261 CREATE TABLE t1(a,b,c); 262 CREATE TABLE t2(x,y,z); 263 PRAGMA writable_schema=ON; 264 UPDATE sqlite_schema SET sql='CREATE INDEX t1b ON t1(b)' WHERE name='t2'; 265 PRAGMA writable_schema=OFF; 266 ALTER TABLE t2 DROP COLUMN z; 267} {1 {database disk image is malformed}} 268reset_db 269do_catchsql_test 6.1 { 270 CREATE TABLE t1(a,b,c); 271 CREATE TABLE t2(x,y,z); 272 PRAGMA writable_schema=ON; 273 UPDATE sqlite_schema SET sql='CREATE VIEW t2(x,y,z) AS SELECT b,a,c FROM t1' 274 WHERE name='t2'; 275 PRAGMA writable_schema=OFF; 276 ALTER TABLE t2 DROP COLUMN z; 277} {1 {database disk image is malformed}} 278 279finish_test 280