wasCSharpSQLite – Blame information for rev 7
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1 | office | 1 | # 2009 April 24 |
2 | # |
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3 | # The author disclaims copyright to this source code. In place of |
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4 | # a legal notice, here is a blessing: |
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5 | # |
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6 | # May you do good and not evil. |
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7 | # May you find forgiveness for yourself and forgive others. |
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8 | # May you share freely, never taking more than you give. |
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9 | # |
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10 | #*********************************************************************** |
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11 | # |
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12 | # Ticket #3824 |
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13 | # |
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14 | # When you use an "IS NULL" constraint on a UNIQUE index, the result |
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15 | # is not necessarily UNIQUE. Make sure the optimizer does not assume |
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16 | # uniqueness. |
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17 | # |
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18 | # $Id: tkt3824.test,v 1.2 2009/04/24 20:32:31 drh Exp $ |
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19 | |||
20 | set testdir [file dirname $argv0] |
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21 | source $testdir/tester.tcl |
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22 | |||
23 | proc execsql_status {sql {db db}} { |
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24 | set result [uplevel $db eval [list $sql]] |
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25 | if {[db status sort]} { |
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26 | concat $result sort |
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27 | } else { |
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28 | concat $result nosort |
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29 | } |
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30 | } |
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31 | |||
32 | do_test tkt3824-1.1 { |
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33 | db eval { |
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34 | CREATE TABLE t1(a,b); |
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35 | INSERT INTO t1 VALUES(1,NULL); |
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36 | INSERT INTO t1 VALUES(9,NULL); |
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37 | INSERT INTO t1 VALUES(5,NULL); |
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38 | INSERT INTO t1 VALUES(123,NULL); |
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39 | INSERT INTO t1 VALUES(-10,NULL); |
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40 | CREATE UNIQUE INDEX t1b ON t1(b); |
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41 | } |
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42 | execsql_status { |
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43 | SELECT a FROM t1 WHERE b IS NULL ORDER BY a; |
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44 | } |
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45 | } {-10 1 5 9 123 sort} |
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46 | do_test tkt3824-1.2 { |
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47 | execsql_status { |
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48 | SELECT a FROM t1 WHERE b IS NULL ORDER BY b, a; |
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49 | } |
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50 | } {-10 1 5 9 123 sort} |
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51 | |||
52 | do_test tkt3824-2.1 { |
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53 | db eval { |
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54 | CREATE TABLE t2(a,b,c); |
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55 | INSERT INTO t2 VALUES(1,1,NULL); |
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56 | INSERT INTO t2 VALUES(9,2,NULL); |
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57 | INSERT INTO t2 VALUES(5,2,NULL); |
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58 | INSERT INTO t2 VALUES(123,3,NULL); |
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59 | INSERT INTO t2 VALUES(-10,3,NULL); |
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60 | CREATE UNIQUE INDEX t2bc ON t2(b,c); |
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61 | } |
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62 | execsql_status { |
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63 | SELECT a FROM t2 WHERE b=2 AND c IS NULL ORDER BY a; |
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64 | } |
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65 | } {5 9 sort} |
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66 | do_test tkt3824-2.2 { |
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67 | execsql_status { |
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68 | SELECT a FROM t2 WHERE b=2 AND c IS NULL ORDER BY b, a; |
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69 | } |
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70 | } {5 9 sort} |
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71 | do_test tkt3824-2.3 { |
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72 | lsort [execsql_status { |
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73 | SELECT a FROM t2 WHERE b=2 AND c IS NULL ORDER BY b; |
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74 | }] |
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75 | } {5 9 nosort} |
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76 | |||
77 | do_test tkt3824-3.1 { |
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78 | db eval { |
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79 | CREATE TABLE t3(x,y); |
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80 | INSERT INTO t3 SELECT a, b FROM t1; |
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81 | INSERT INTO t3 VALUES(234,567); |
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82 | CREATE UNIQUE INDEX t3y ON t3(y); |
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83 | DELETE FROM t3 WHERE y IS NULL; |
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84 | SELECT * FROM t3; |
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85 | } |
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86 | } {234 567} |
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87 | |||
88 | do_test tkt3824-4.1 { |
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89 | db eval { |
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90 | CREATE TABLE t4(x,y); |
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91 | INSERT INTO t4 SELECT a, b FROM t1; |
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92 | INSERT INTO t4 VALUES(234,567); |
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93 | CREATE UNIQUE INDEX t4y ON t4(y); |
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94 | UPDATE t4 SET rowid=rowid+100 WHERE y IS NULL; |
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95 | SELECT rowid, x FROM t4 ORDER BY rowid; |
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96 | } |
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97 | } {6 234 101 1 102 9 103 5 104 123 105 -10} |
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98 | |||
99 | finish_test |