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1 # 2002 May 24 |
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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 # This file implements regression tests for SQLite library. |
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12 # |
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13 # This file implements tests for joins, including outer joins, where |
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14 # there are a large number of tables involved in the join. |
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15 # |
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16 # $Id: join3.test,v 1.4 2005/01/19 23:24:51 drh Exp $ |
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17 |
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18 set testdir [file dirname $argv0] |
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19 source $testdir/tester.tcl |
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20 |
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21 # An unrestricted join |
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22 # |
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23 catch {unset ::result} |
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24 set result {} |
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25 for {set N 1} {$N<=$bitmask_size} {incr N} { |
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26 lappend result $N |
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27 do_test join3-1.$N { |
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28 execsql "CREATE TABLE t${N}(x);" |
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29 execsql "INSERT INTO t$N VALUES($N)" |
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30 set sql "SELECT * FROM t1" |
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31 for {set i 2} {$i<=$N} {incr i} {append sql ", t$i"} |
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32 execsql $sql |
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33 } $result |
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34 } |
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35 |
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36 # Joins with a comparison |
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37 # |
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38 set result {} |
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39 for {set N 1} {$N<=$bitmask_size} {incr N} { |
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40 lappend result $N |
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41 do_test join3-2.$N { |
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42 set sql "SELECT * FROM t1" |
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43 for {set i 2} {$i<=$N} {incr i} {append sql ", t$i"} |
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44 set sep WHERE |
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45 for {set i 1} {$i<$N} {incr i} { |
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46 append sql " $sep t[expr {$i+1}].x==t$i.x+1" |
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47 set sep AND |
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48 } |
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49 execsql $sql |
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50 } $result |
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51 } |
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52 |
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53 # Error of too many tables in the join |
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54 # |
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55 do_test join3-3.1 { |
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56 set sql "SELECT * FROM t1 AS t0, t1" |
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57 for {set i 2} {$i<=$bitmask_size} {incr i} {append sql ", t$i"} |
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58 catchsql $sql |
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59 } [list 1 "at most $bitmask_size tables in a join"] |
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60 |
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61 |
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62 finish_test |