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1 # 2007 November 23 |
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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 # The tests in this file ensure that a temporary table is used |
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13 # when required by an "INSERT INTO ... SELECT ..." statement. |
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14 # |
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15 # $Id: insert5.test,v 1.5 2008/08/04 03:51:24 danielk1977 Exp $ |
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16 |
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17 set testdir [file dirname $argv0] |
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18 source $testdir/tester.tcl |
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19 |
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20 ifcapable !subquery { |
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21 finish_test |
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22 return |
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23 } |
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24 |
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25 # Return true if the compilation of the sql passed as an argument |
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26 # includes the opcode OpenEphemeral. An "INSERT INTO ... SELECT" |
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27 # statement includes such an opcode if a temp-table is used |
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28 # to store intermediate results. |
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29 # |
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30 proc uses_temp_table {sql} { |
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31 return [expr {[lsearch [execsql "EXPLAIN $sql"] OpenEphemeral]>=0}] |
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32 } |
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33 |
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34 # Construct the sample database. |
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35 # |
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36 do_test insert5-1.0 { |
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37 file delete -force test2.db test2.db-journal |
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38 execsql { |
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39 CREATE TABLE MAIN(Id INTEGER, Id1 INTEGER); |
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40 CREATE TABLE B(Id INTEGER, Id1 INTEGER); |
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41 CREATE VIEW v1 AS SELECT * FROM B; |
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42 CREATE VIEW v2 AS SELECT * FROM MAIN; |
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43 INSERT INTO MAIN(Id,Id1) VALUES(2,3); |
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44 INSERT INTO B(Id,Id1) VALUES(2,3); |
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45 } |
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46 } {} |
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47 |
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48 # Run the query. |
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49 # |
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50 ifcapable compound { |
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51 do_test insert5-1.1 { |
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52 execsql { |
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53 INSERT INTO B |
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54 SELECT * FROM B UNION ALL |
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55 SELECT * FROM MAIN WHERE exists (select * FROM B WHERE B.Id = MAIN.Id); |
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56 SELECT * FROM B; |
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57 } |
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58 } {2 3 2 3 2 3} |
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59 } else { |
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60 do_test insert5-1.1 { |
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61 execsql { |
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62 INSERT INTO B SELECT * FROM B; |
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63 INSERT INTO B |
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64 SELECT * FROM MAIN WHERE exists (select * FROM B WHERE B.Id = MAIN.Id); |
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65 SELECT * FROM B; |
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66 } |
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67 } {2 3 2 3 2 3} |
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68 } |
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69 do_test insert5-2.1 { |
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70 uses_temp_table { INSERT INTO b SELECT * FROM main } |
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71 } {0} |
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72 do_test insert5-2.2 { |
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73 uses_temp_table { INSERT INTO b SELECT * FROM b } |
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74 } {1} |
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75 do_test insert5-2.3 { |
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76 uses_temp_table { INSERT INTO b SELECT (SELECT id FROM b), id1 FROM main } |
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77 } {1} |
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78 do_test insert5-2.4 { |
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79 uses_temp_table { INSERT INTO b SELECT id1, (SELECT id FROM b) FROM main } |
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80 } {1} |
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81 do_test insert5-2.5 { |
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82 uses_temp_table { |
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83 INSERT INTO b |
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84 SELECT * FROM main WHERE id = (SELECT id1 FROM b WHERE main.id = b.id) } |
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85 } {1} |
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86 do_test insert5-2.6 { |
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87 uses_temp_table { INSERT INTO b SELECT * FROM v1 } |
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88 } {1} |
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89 do_test insert5-2.7 { |
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90 uses_temp_table { INSERT INTO b SELECT * FROM v2 } |
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91 } {0} |
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92 do_test insert5-2.8 { |
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93 uses_temp_table { |
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94 INSERT INTO b |
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95 SELECT * FROM main WHERE id > 10 AND max(id1, (SELECT id FROM b)) > 10; |
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96 } |
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97 } {1} |
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98 |
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99 # UPDATE: Using a column from the outer query (main.id) in the GROUP BY |
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100 # or ORDER BY of a sub-query is no longer supported. |
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101 # |
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102 # do_test insert5-2.9 { |
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103 # uses_temp_table { |
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104 # INSERT INTO b |
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105 # SELECT * FROM main |
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106 # WHERE id > 10 AND (SELECT count(*) FROM v2 GROUP BY main.id) |
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107 # } |
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108 # } {} |
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109 do_test insert5-2.9 { |
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110 catchsql { |
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111 INSERT INTO b |
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112 SELECT * FROM main |
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113 WHERE id > 10 AND (SELECT count(*) FROM v2 GROUP BY main.id) |
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114 } |
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115 } {1 {no such column: main.id}} |
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116 |
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117 finish_test |