[sql] Import reference version of SQLite 3.17..

third_party/sqlite/sqlite-src-3170000/test/func.test

+# 2001 September 15
+#
+# The author disclaims copyright to this source code.  In place of
+# a legal notice, here is a blessing:
+#
+#    May you do good and not evil.
+#    May you find forgiveness for yourself and forgive others.
+#    May you share freely, never taking more than you give.
+#
+#***********************************************************************
+# This file implements regression tests for SQLite library.  The
+# focus of this file is testing built-in functions.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+set testprefix func
+
+# Create a table to work with.
+#
+do_test func-0.0 {
+  execsql {CREATE TABLE tbl1(t1 text)}
+  foreach word {this program is free software} {
+    execsql "INSERT INTO tbl1 VALUES('$word')"
+  }
+  execsql {SELECT t1 FROM tbl1 ORDER BY t1}
+} {free is program software this}
+do_test func-0.1 {
+  execsql {
+     CREATE TABLE t2(a);
+     INSERT INTO t2 VALUES(1);
+     INSERT INTO t2 VALUES(NULL);
+     INSERT INTO t2 VALUES(345);
+     INSERT INTO t2 VALUES(NULL);
+     INSERT INTO t2 VALUES(67890);
+     SELECT * FROM t2;
+  }
+} {1 {} 345 {} 67890}
+
+# Check out the length() function
+#
+do_test func-1.0 {
+  execsql {SELECT length(t1) FROM tbl1 ORDER BY t1}
+} {4 2 7 8 4}
+do_test func-1.1 {
+  set r [catch {execsql {SELECT length(*) FROM tbl1 ORDER BY t1}} msg]
+  lappend r $msg
+} {1 {wrong number of arguments to function length()}}
+do_test func-1.2 {
+  set r [catch {execsql {SELECT length(t1,5) FROM tbl1 ORDER BY t1}} msg]
+  lappend r $msg
+} {1 {wrong number of arguments to function length()}}
+do_test func-1.3 {
+  execsql {SELECT length(t1), count(*) FROM tbl1 GROUP BY length(t1)
+           ORDER BY length(t1)}
+} {2 1 4 2 7 1 8 1}
+do_test func-1.4 {
+  execsql {SELECT coalesce(length(a),-1) FROM t2}
+} {1 -1 3 -1 5}
+
+# Check out the substr() function
+#
+do_test func-2.0 {
+  execsql {SELECT substr(t1,1,2) FROM tbl1 ORDER BY t1}
+} {fr is pr so th}
+do_test func-2.1 {
+  execsql {SELECT substr(t1,2,1) FROM tbl1 ORDER BY t1}
+} {r s r o h}
+do_test func-2.2 {
+  execsql {SELECT substr(t1,3,3) FROM tbl1 ORDER BY t1}
+} {ee {} ogr ftw is}
+do_test func-2.3 {
+  execsql {SELECT substr(t1,-1,1) FROM tbl1 ORDER BY t1}
+} {e s m e s}
+do_test func-2.4 {
+  execsql {SELECT substr(t1,-1,2) FROM tbl1 ORDER BY t1}
+} {e s m e s}
+do_test func-2.5 {
+  execsql {SELECT substr(t1,-2,1) FROM tbl1 ORDER BY t1}
+} {e i a r i}
+do_test func-2.6 {
+  execsql {SELECT substr(t1,-2,2) FROM tbl1 ORDER BY t1}
+} {ee is am re is}
+do_test func-2.7 {
+  execsql {SELECT substr(t1,-4,2) FROM tbl1 ORDER BY t1}
+} {fr {} gr wa th}
+do_test func-2.8 {
+  execsql {SELECT t1 FROM tbl1 ORDER BY substr(t1,2,20)}
+} {this software free program is}
+do_test func-2.9 {
+  execsql {SELECT substr(a,1,1) FROM t2}
+} {1 {} 3 {} 6}
+do_test func-2.10 {
+  execsql {SELECT substr(a,2,2) FROM t2}
+} {{} {} 45 {} 78}
+
+# Only do the following tests if TCL has UTF-8 capabilities
+#
+if {"\u1234"!="u1234"} {
+
+# Put some UTF-8 characters in the database
+#
+do_test func-3.0 {
+  execsql {DELETE FROM tbl1}
+  foreach word "contains UTF-8 characters hi\u1234ho" {
+    execsql "INSERT INTO tbl1 VALUES('$word')"
+  }
+  execsql {SELECT t1 FROM tbl1 ORDER BY t1}
+} "UTF-8 characters contains hi\u1234ho"
+do_test func-3.1 {
+  execsql {SELECT length(t1) FROM tbl1 ORDER BY t1}
+} {5 10 8 5}
+do_test func-3.2 {
+  execsql {SELECT substr(t1,1,2) FROM tbl1 ORDER BY t1}
+} {UT ch co hi}
+do_test func-3.3 {
+  execsql {SELECT substr(t1,1,3) FROM tbl1 ORDER BY t1}
+} "UTF cha con hi\u1234"
+do_test func-3.4 {
+  execsql {SELECT substr(t1,2,2) FROM tbl1 ORDER BY t1}
+} "TF ha on i\u1234"
+do_test func-3.5 {
+  execsql {SELECT substr(t1,2,3) FROM tbl1 ORDER BY t1}
+} "TF- har ont i\u1234h"
+do_test func-3.6 {
+  execsql {SELECT substr(t1,3,2) FROM tbl1 ORDER BY t1}
+} "F- ar nt \u1234h"
+do_test func-3.7 {
+  execsql {SELECT substr(t1,4,2) FROM tbl1 ORDER BY t1}
+} "-8 ra ta ho"
+do_test func-3.8 {
+  execsql {SELECT substr(t1,-1,1) FROM tbl1 ORDER BY t1}
+} "8 s s o"
+do_test func-3.9 {
+  execsql {SELECT substr(t1,-3,2) FROM tbl1 ORDER BY t1}
+} "F- er in \u1234h"
+do_test func-3.10 {
+  execsql {SELECT substr(t1,-4,3) FROM tbl1 ORDER BY t1}
+} "TF- ter ain i\u1234h"
+do_test func-3.99 {
+  execsql {DELETE FROM tbl1}
+  foreach word {this program is free software} {
+    execsql "INSERT INTO tbl1 VALUES('$word')"
+  }
+  execsql {SELECT t1 FROM tbl1}
+} {this program is free software}
+
+} ;# End \u1234!=u1234
+
+# Test the abs() and round() functions.
+#
+ifcapable !floatingpoint {
+  do_test func-4.1 {
+    execsql {
+      CREATE TABLE t1(a,b,c);
+      INSERT INTO t1 VALUES(1,2,3);
+      INSERT INTO t1 VALUES(2,12345678901234,-1234567890);
+      INSERT INTO t1 VALUES(3,-2,-5);
+    }
+    catchsql {SELECT abs(a,b) FROM t1}
+  } {1 {wrong number of arguments to function abs()}}
+}
+ifcapable floatingpoint {
+  do_test func-4.1 {
+    execsql {
+      CREATE TABLE t1(a,b,c);
+      INSERT INTO t1 VALUES(1,2,3);
+      INSERT INTO t1 VALUES(2,1.2345678901234,-12345.67890);
+      INSERT INTO t1 VALUES(3,-2,-5);
+    }
+    catchsql {SELECT abs(a,b) FROM t1}
+  } {1 {wrong number of arguments to function abs()}}
+}
+do_test func-4.2 {
+  catchsql {SELECT abs() FROM t1}
+} {1 {wrong number of arguments to function abs()}}
+ifcapable floatingpoint {
+  do_test func-4.3 {
+    catchsql {SELECT abs(b) FROM t1 ORDER BY a}
+  } {0 {2 1.2345678901234 2}}
+  do_test func-4.4 {
+    catchsql {SELECT abs(c) FROM t1 ORDER BY a}
+  } {0 {3 12345.6789 5}}
+}
+ifcapable !floatingpoint {
+  if {[working_64bit_int]} {
+    do_test func-4.3 {
+      catchsql {SELECT abs(b) FROM t1 ORDER BY a}
+    } {0 {2 12345678901234 2}}
+  }
+  do_test func-4.4 {
+    catchsql {SELECT abs(c) FROM t1 ORDER BY a}
+  } {0 {3 1234567890 5}}
+}
+do_test func-4.4.1 {
+  execsql {SELECT abs(a) FROM t2}
+} {1 {} 345 {} 67890}
+do_test func-4.4.2 {
+  execsql {SELECT abs(t1) FROM tbl1}
+} {0.0 0.0 0.0 0.0 0.0}
+
+ifcapable floatingpoint {
+  do_test func-4.5 {
+    catchsql {SELECT round(a,b,c) FROM t1}
+  } {1 {wrong number of arguments to function round()}}
+  do_test func-4.6 {
+    catchsql {SELECT round(b,2) FROM t1 ORDER BY b}
+  } {0 {-2.0 1.23 2.0}}
+  do_test func-4.7 {
+    catchsql {SELECT round(b,0) FROM t1 ORDER BY a}
+  } {0 {2.0 1.0 -2.0}}
+  do_test func-4.8 {
+    catchsql {SELECT round(c) FROM t1 ORDER BY a}
+  } {0 {3.0 -12346.0 -5.0}}
+  do_test func-4.9 {
+    catchsql {SELECT round(c,a) FROM t1 ORDER BY a}
+  } {0 {3.0 -12345.68 -5.0}}
+  do_test func-4.10 {
+    catchsql {SELECT 'x' || round(c,a) || 'y' FROM t1 ORDER BY a}
+  } {0 {x3.0y x-12345.68y x-5.0y}}
+  do_test func-4.11 {
+    catchsql {SELECT round() FROM t1 ORDER BY a}
+  } {1 {wrong number of arguments to function round()}}
+  do_test func-4.12 {
+    execsql {SELECT coalesce(round(a,2),'nil') FROM t2}
+  } {1.0 nil 345.0 nil 67890.0}
+  do_test func-4.13 {
+    execsql {SELECT round(t1,2) FROM tbl1}
+  } {0.0 0.0 0.0 0.0 0.0}
+  do_test func-4.14 {
+    execsql {SELECT typeof(round(5.1,1));}
+  } {real}
+  do_test func-4.15 {
+    execsql {SELECT typeof(round(5.1));}
+  } {real}
+  do_test func-4.16 {
+    catchsql {SELECT round(b,2.0) FROM t1 ORDER BY b}
+  } {0 {-2.0 1.23 2.0}}
+  # Verify some values reported on the mailing list.
+  # Some of these fail on MSVC builds with 64-bit
+  # long doubles, but not on GCC builds with 80-bit
+  # long doubles.
+  for {set i 1} {$i<999} {incr i} {
+    set x1 [expr 40222.5 + $i]
+    set x2 [expr 40223.0 + $i]
+    do_test func-4.17.$i {
+      execsql {SELECT round($x1);}
+    } $x2
+  }
+  for {set i 1} {$i<999} {incr i} {
+    set x1 [expr 40222.05 + $i]
+    set x2 [expr 40222.10 + $i]
+    do_test func-4.18.$i {
+      execsql {SELECT round($x1,1);}
+    } $x2
+  }
+  do_test func-4.20 {
+    execsql {SELECT round(40223.4999999999);}
+  } {40223.0}
+  do_test func-4.21 {
+    execsql {SELECT round(40224.4999999999);}
+  } {40224.0}
+  do_test func-4.22 {
+    execsql {SELECT round(40225.4999999999);}
+  } {40225.0}
+  for {set i 1} {$i<10} {incr i} {
+    do_test func-4.23.$i {
+      execsql {SELECT round(40223.4999999999,$i);}
+    } {40223.5}
+    do_test func-4.24.$i {
+      execsql {SELECT round(40224.4999999999,$i);}
+    } {40224.5}
+    do_test func-4.25.$i {
+      execsql {SELECT round(40225.4999999999,$i);}
+    } {40225.5}
+  }
+  for {set i 10} {$i<32} {incr i} {
+    do_test func-4.26.$i {
+      execsql {SELECT round(40223.4999999999,$i);}
+    } {40223.4999999999}
+    do_test func-4.27.$i {
+      execsql {SELECT round(40224.4999999999,$i);}
+    } {40224.4999999999}
+    do_test func-4.28.$i {
+      execsql {SELECT round(40225.4999999999,$i);}
+    } {40225.4999999999}
+  }
+  do_test func-4.29 {
+    execsql {SELECT round(1234567890.5);}
+  } {1234567891.0}
+  do_test func-4.30 {
+    execsql {SELECT round(12345678901.5);}
+  } {12345678902.0}
+  do_test func-4.31 {
+    execsql {SELECT round(123456789012.5);}
+  } {123456789013.0}
+  do_test func-4.32 {
+    execsql {SELECT round(1234567890123.5);}
+  } {1234567890124.0}
+  do_test func-4.33 {
+    execsql {SELECT round(12345678901234.5);}
+  } {12345678901235.0}
+  do_test func-4.34 {
+    execsql {SELECT round(1234567890123.35,1);}
+  } {1234567890123.4}
+  do_test func-4.35 {
+    execsql {SELECT round(1234567890123.445,2);}
+  } {1234567890123.45}
+  do_test func-4.36 {
+    execsql {SELECT round(99999999999994.5);}
+  } {99999999999995.0}
+  do_test func-4.37 {
+    execsql {SELECT round(9999999999999.55,1);}
+  } {9999999999999.6}
+  do_test func-4.38 {
+    execsql {SELECT round(9999999999999.556,2);}
+  } {9999999999999.56}
+}
+
+# Test the upper() and lower() functions
+#
+do_test func-5.1 {
+  execsql {SELECT upper(t1) FROM tbl1}
+} {THIS PROGRAM IS FREE SOFTWARE}
+do_test func-5.2 {
+  execsql {SELECT lower(upper(t1)) FROM tbl1}
+} {this program is free software}
+do_test func-5.3 {
+  execsql {SELECT upper(a), lower(a) FROM t2}
+} {1 1 {} {} 345 345 {} {} 67890 67890}
+ifcapable !icu {
+  do_test func-5.4 {
+    catchsql {SELECT upper(a,5) FROM t2}
+  } {1 {wrong number of arguments to function upper()}}
+}
+do_test func-5.5 {
+  catchsql {SELECT upper(*) FROM t2}
+} {1 {wrong number of arguments to function upper()}}
+
+# Test the coalesce() and nullif() functions
+#
+do_test func-6.1 {
+  execsql {SELECT coalesce(a,'xyz') FROM t2}
+} {1 xyz 345 xyz 67890}
+do_test func-6.2 {
+  execsql {SELECT coalesce(upper(a),'nil') FROM t2}
+} {1 nil 345 nil 67890}
+do_test func-6.3 {
+  execsql {SELECT coalesce(nullif(1,1),'nil')}
+} {nil}
+do_test func-6.4 {
+  execsql {SELECT coalesce(nullif(1,2),'nil')}
+} {1}
+do_test func-6.5 {
+  execsql {SELECT coalesce(nullif(1,NULL),'nil')}
+} {1}
+
+
+# Test the last_insert_rowid() function
+#
+do_test func-7.1 {
+  execsql {SELECT last_insert_rowid()}
+} [db last_insert_rowid]
+
+# Tests for aggregate functions and how they handle NULLs.
+#
+ifcapable floatingpoint {
+  do_test func-8.1 {
+    ifcapable explain {
+      execsql {EXPLAIN SELECT sum(a) FROM t2;}
+    }
+    execsql {
+      SELECT sum(a), count(a), round(avg(a),2), min(a), max(a), count(*) FROM t2;
+    }
+  } {68236 3 22745.33 1 67890 5}
+}
+ifcapable !floatingpoint {
+  do_test func-8.1 {
+    ifcapable explain {
+      execsql {EXPLAIN SELECT sum(a) FROM t2;}
+    }
+    execsql {
+      SELECT sum(a), count(a), avg(a), min(a), max(a), count(*) FROM t2;
+    }
+  } {68236 3 22745.0 1 67890 5}
+}
+do_test func-8.2 {
+  execsql {
+    SELECT max('z+'||a||'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP') FROM t2;
+  }
+} {z+67890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP}
+
+ifcapable tempdb {
+  do_test func-8.3 {
+    execsql {
+      CREATE TEMP TABLE t3 AS SELECT a FROM t2 ORDER BY a DESC;
+      SELECT min('z+'||a||'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP') FROM t3;
+    }
+  } {z+1abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP}
+} else {
+  do_test func-8.3 {
+    execsql {
+      CREATE TABLE t3 AS SELECT a FROM t2 ORDER BY a DESC;
+      SELECT min('z+'||a||'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP') FROM t3;
+    }
+  } {z+1abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP}
+}
+do_test func-8.4 {
+  execsql {
+    SELECT max('z+'||a||'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP') FROM t3;
+  }
+} {z+67890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP}
+ifcapable compound {
+  do_test func-8.5 {
+    execsql {
+      SELECT sum(x) FROM (SELECT '9223372036' || '854775807' AS x
+                          UNION ALL SELECT -9223372036854775807)
+    }
+  } {0}
+  do_test func-8.6 {
+    execsql {
+      SELECT typeof(sum(x)) FROM (SELECT '9223372036' || '854775807' AS x
+                          UNION ALL SELECT -9223372036854775807)
+    }
+  } {integer}
+  do_test func-8.7 {
+    execsql {
+      SELECT typeof(sum(x)) FROM (SELECT '9223372036' || '854775808' AS x
+                          UNION ALL SELECT -9223372036854775807)
+    }
+  } {real}
+ifcapable floatingpoint {
+  do_test func-8.8 {
+    execsql {
+      SELECT sum(x)>0.0 FROM (SELECT '9223372036' || '854775808' AS x
+                          UNION ALL SELECT -9223372036850000000)
+    }
+  } {1}
+}
+ifcapable !floatingpoint {
+  do_test func-8.8 {
+    execsql {
+      SELECT sum(x)>0 FROM (SELECT '9223372036' || '854775808' AS x
+                          UNION ALL SELECT -9223372036850000000)
+    }
+  } {1}
+}
+}
+
+# How do you test the random() function in a meaningful, deterministic way?
+#
+do_test func-9.1 {
+  execsql {
+    SELECT random() is not null;
+  }
+} {1}
+do_test func-9.2 {
+  execsql {
+    SELECT typeof(random());
+  }
+} {integer}
+do_test func-9.3 {
+  execsql {
+    SELECT randomblob(32) is not null;
+  }
+} {1}
+do_test func-9.4 {
+  execsql {
+    SELECT typeof(randomblob(32));
+  }
+} {blob}
+do_test func-9.5 {
+  execsql {
+    SELECT length(randomblob(32)), length(randomblob(-5)),
+           length(randomblob(2000))
+  }
+} {32 1 2000}
+
+# The "hex()" function was added in order to be able to render blobs
+# generated by randomblob().  So this seems like a good place to test
+# hex().
+#
+ifcapable bloblit {
+  do_test func-9.10 {
+    execsql {SELECT hex(x'00112233445566778899aAbBcCdDeEfF')}
+  } {00112233445566778899AABBCCDDEEFF}
+}
+set encoding [db one {PRAGMA encoding}]
+if {$encoding=="UTF-16le"} {
+  do_test func-9.11-utf16le {
+    execsql {SELECT hex(replace('abcdefg','ef','12'))}
+  } {6100620063006400310032006700}
+  do_test func-9.12-utf16le {
+    execsql {SELECT hex(replace('abcdefg','','12'))}
+  } {6100620063006400650066006700}
+  do_test func-9.13-utf16le {
+    execsql {SELECT hex(replace('aabcdefg','a','aaa'))}
+  } {610061006100610061006100620063006400650066006700}
+} elseif {$encoding=="UTF-8"} {
+  do_test func-9.11-utf8 {
+    execsql {SELECT hex(replace('abcdefg','ef','12'))}
+  } {61626364313267}
+  do_test func-9.12-utf8 {
+    execsql {SELECT hex(replace('abcdefg','','12'))}
+  } {61626364656667}
+  do_test func-9.13-utf8 {
+    execsql {SELECT hex(replace('aabcdefg','a','aaa'))}
+  } {616161616161626364656667}
+}
+  
+# Use the "sqlite_register_test_function" TCL command which is part of
+# the text fixture in order to verify correct operation of some of
+# the user-defined SQL function APIs that are not used by the built-in
+# functions.
+#
+set ::DB [sqlite3_connection_pointer db]
+sqlite_register_test_function $::DB testfunc
+do_test func-10.1 {
+  catchsql {
+    SELECT testfunc(NULL,NULL);
+  }
+} {1 {first argument should be one of: int int64 string double null value}}
+do_test func-10.2 {
+  execsql {
+    SELECT testfunc(
+     'string', 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
+     'int', 1234
+    );
+  }
+} {1234}
+do_test func-10.3 {
+  execsql {
+    SELECT testfunc(
+     'string', 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
+     'string', NULL
+    );
+  }
+} {{}}
+
+ifcapable floatingpoint {
+  do_test func-10.4 {
+    execsql {
+      SELECT testfunc(
+       'string', 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
+       'double', 1.234
+      );
+    }
+  } {1.234}
+  do_test func-10.5 {
+    execsql {
+      SELECT testfunc(
+       'string', 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
+       'int', 1234,
+       'string', 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
+       'string', NULL,
+       'string', 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
+       'double', 1.234,
+       'string', 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
+       'int', 1234,
+       'string', 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
+       'string', NULL,
+       'string', 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
+       'double', 1.234
+      );
+    }
+  } {1.234}
+}
+
+# Test the built-in sqlite_version(*) SQL function.
+#
+do_test func-11.1 {
+  execsql {
+    SELECT sqlite_version(*);
+  }
+} [sqlite3 -version]
+
+# Test that destructors passed to sqlite3 by calls to sqlite3_result_text()
+# etc. are called. These tests use two special user-defined functions
+# (implemented in func.c) only available in test builds. 
+#
+# Function test_destructor() takes one argument and returns a copy of the
+# text form of that argument. A destructor is associated with the return
+# value. Function test_destructor_count() returns the number of outstanding
+# destructor calls for values returned by test_destructor().
+#
+if {[db eval {PRAGMA encoding}]=="UTF-8"} {
+  do_test func-12.1-utf8 {
+    execsql {
+      SELECT test_destructor('hello world'), test_destructor_count();
+    }
+  } {{hello world} 1}
+} else {
+    ifcapable {utf16} {
+      do_test func-12.1-utf16 {
+        execsql {
+          SELECT test_destructor16('hello world'), test_destructor_count();
+        }
+      } {{hello world} 1}
+    }
+}
+do_test func-12.2 {
+  execsql {
+    SELECT test_destructor_count();
+  }
+} {0}
+do_test func-12.3 {
+  execsql {
+    SELECT test_destructor('hello')||' world'
+  }
+} {{hello world}}
+do_test func-12.4 {
+  execsql {
+    SELECT test_destructor_count();
+  }
+} {0}
+do_test func-12.5 {
+  execsql {
+    CREATE TABLE t4(x);
+    INSERT INTO t4 VALUES(test_destructor('hello'));
+    INSERT INTO t4 VALUES(test_destructor('world'));
+    SELECT min(test_destructor(x)), max(test_destructor(x)) FROM t4;
+  }
+} {hello world}
+do_test func-12.6 {
+  execsql {
+    SELECT test_destructor_count();
+  }
+} {0}
+do_test func-12.7 {
+  execsql {
+    DROP TABLE t4;
+  }
+} {}
+
+
+# Test that the auxdata API for scalar functions works. This test uses
+# a special user-defined function only available in test builds,
+# test_auxdata(). Function test_auxdata() takes any number of arguments.
+do_test func-13.1 {
+  execsql {
+    SELECT test_auxdata('hello world');
+  }
+} {0}
+
+do_test func-13.2 {
+  execsql {
+    CREATE TABLE t4(a, b);
+    INSERT INTO t4 VALUES('abc', 'def');
+    INSERT INTO t4 VALUES('ghi', 'jkl');
+  }
+} {}
+do_test func-13.3 {
+  execsql {
+    SELECT test_auxdata('hello world') FROM t4;
+  }
+} {0 1}
+do_test func-13.4 {
+  execsql {
+    SELECT test_auxdata('hello world', 123) FROM t4;
+  }
+} {{0 0} {1 1}}
+do_test func-13.5 {
+  execsql {
+    SELECT test_auxdata('hello world', a) FROM t4;
+  }
+} {{0 0} {1 0}}
+do_test func-13.6 {
+  execsql {
+    SELECT test_auxdata('hello'||'world', a) FROM t4;
+  }
+} {{0 0} {1 0}}
+
+# Test that auxilary data is preserved between calls for SQL variables.
+do_test func-13.7 {
+  set DB [sqlite3_connection_pointer db]
+  set sql "SELECT test_auxdata( ? , a ) FROM t4;"
+  set STMT [sqlite3_prepare $DB $sql -1 TAIL]
+  sqlite3_bind_text $STMT 1 hello\000 -1
+  set res [list]
+  while { "SQLITE_ROW"==[sqlite3_step $STMT] } {
+    lappend res [sqlite3_column_text $STMT 0]
+  }
+  lappend res [sqlite3_finalize $STMT]
+} {{0 0} {1 0} SQLITE_OK}
+
+# Test that auxiliary data is discarded when a statement is reset.
+do_execsql_test 13.8.1 {
+  SELECT test_auxdata('constant') FROM t4;
+} {0 1}
+do_execsql_test 13.8.2 {
+  SELECT test_auxdata('constant') FROM t4;
+} {0 1}
+db cache flush
+do_execsql_test 13.8.3 {
+  SELECT test_auxdata('constant') FROM t4;
+} {0 1}
+set V "one"
+do_execsql_test 13.8.4 {
+  SELECT test_auxdata($V), $V FROM t4;
+} {0 one 1 one}
+set V "two"
+do_execsql_test 13.8.5 {
+  SELECT test_auxdata($V), $V FROM t4;
+} {0 two 1 two}
+db cache flush
+set V "three"
+do_execsql_test 13.8.6 {
+  SELECT test_auxdata($V), $V FROM t4;
+} {0 three 1 three}
+
+
+# Make sure that a function with a very long name is rejected
+do_test func-14.1 {
+  catch {
+    db function [string repeat X 254] {return "hello"}
+  } 
+} {0}
+do_test func-14.2 {
+  catch {
+    db function [string repeat X 256] {return "hello"}
+  }
+} {1}
+
+do_test func-15.1 {
+  catchsql {select test_error(NULL)}
+} {1 {}}
+do_test func-15.2 {
+  catchsql {select test_error('this is the error message')}
+} {1 {this is the error message}}
+do_test func-15.3 {
+  catchsql {select test_error('this is the error message',12)}
+} {1 {this is the error message}}
+do_test func-15.4 {
+  db errorcode
+} {12}
+
+# Test the quote function for BLOB and NULL values.
+do_test func-16.1 {
+  execsql {
+    CREATE TABLE tbl2(a, b);
+  }
+  set STMT [sqlite3_prepare $::DB "INSERT INTO tbl2 VALUES(?, ?)" -1 TAIL]
+  sqlite3_bind_blob $::STMT 1 abc 3
+  sqlite3_step $::STMT
+  sqlite3_finalize $::STMT
+  execsql {
+    SELECT quote(a), quote(b) FROM tbl2;
+  }
+} {X'616263' NULL}
+
+# Correctly handle function error messages that include %.  Ticket #1354
+#
+do_test func-17.1 {
+  proc testfunc1 args {error "Error %d with %s percents %p"}
+  db function testfunc1 ::testfunc1
+  catchsql {
+    SELECT testfunc1(1,2,3);
+  }
+} {1 {Error %d with %s percents %p}}
+
+# The SUM function should return integer results when all inputs are integer.
+#
+do_test func-18.1 {
+  execsql {
+    CREATE TABLE t5(x);
+    INSERT INTO t5 VALUES(1);
+    INSERT INTO t5 VALUES(-99);
+    INSERT INTO t5 VALUES(10000);
+    SELECT sum(x) FROM t5;
+  }
+} {9902}
+ifcapable floatingpoint {
+  do_test func-18.2 {
+    execsql {
+      INSERT INTO t5 VALUES(0.0);
+      SELECT sum(x) FROM t5;
+    }
+  } {9902.0}
+}
+
+# The sum of nothing is NULL.  But the sum of all NULLs is NULL.
+#
+# The TOTAL of nothing is 0.0.
+#
+do_test func-18.3 {
+  execsql {
+    DELETE FROM t5;
+    SELECT sum(x), total(x) FROM t5;
+  }
+} {{} 0.0}
+do_test func-18.4 {
+  execsql {
+    INSERT INTO t5 VALUES(NULL);
+    SELECT sum(x), total(x) FROM t5
+  }
+} {{} 0.0}
+do_test func-18.5 {
+  execsql {
+    INSERT INTO t5 VALUES(NULL);
+    SELECT sum(x), total(x) FROM t5
+  }
+} {{} 0.0}
+do_test func-18.6 {
+  execsql {
+    INSERT INTO t5 VALUES(123);
+    SELECT sum(x), total(x) FROM t5
+  }
+} {123 123.0}
+
+# Ticket #1664, #1669, #1670, #1674: An integer overflow on SUM causes
+# an error. The non-standard TOTAL() function continues to give a helpful
+# result.
+#
+do_test func-18.10 {
+  execsql {
+    CREATE TABLE t6(x INTEGER);
+    INSERT INTO t6 VALUES(1);
+    INSERT INTO t6 VALUES(1<<62);
+    SELECT sum(x) - ((1<<62)+1) from t6;
+  }
+} 0
+do_test func-18.11 {
+  execsql {
+    SELECT typeof(sum(x)) FROM t6
+  }
+} integer
+ifcapable floatingpoint {
+  do_test func-18.12 {
+    catchsql {
+      INSERT INTO t6 VALUES(1<<62);
+      SELECT sum(x) - ((1<<62)*2.0+1) from t6;
+    }
+  } {1 {integer overflow}}
+  do_test func-18.13 {
+    execsql {
+      SELECT total(x) - ((1<<62)*2.0+1) FROM t6
+    }
+  } 0.0
+}
+ifcapable !floatingpoint {
+  do_test func-18.12 {
+    catchsql {
+      INSERT INTO t6 VALUES(1<<62);
+      SELECT sum(x) - ((1<<62)*2+1) from t6;
+    }
+  } {1 {integer overflow}}
+  do_test func-18.13 {
+    execsql {
+      SELECT total(x) - ((1<<62)*2+1) FROM t6
+    }
+  } 0.0
+}
+if {[working_64bit_int]} {
+  do_test func-18.14 {
+    execsql {
+      SELECT sum(-9223372036854775805);
+    }
+  } -9223372036854775805
+}
+ifcapable compound&&subquery {
+
+do_test func-18.15 {
+  catchsql {
+    SELECT sum(x) FROM 
+       (SELECT 9223372036854775807 AS x UNION ALL
+        SELECT 10 AS x);
+  }
+} {1 {integer overflow}}
+if {[working_64bit_int]} {
+  do_test func-18.16 {
+    catchsql {
+      SELECT sum(x) FROM 
+         (SELECT 9223372036854775807 AS x UNION ALL
+          SELECT -10 AS x);
+    }
+  } {0 9223372036854775797}
+  do_test func-18.17 {
+    catchsql {
+      SELECT sum(x) FROM 
+         (SELECT -9223372036854775807 AS x UNION ALL
+          SELECT 10 AS x);
+    }
+  } {0 -9223372036854775797}
+}
+do_test func-18.18 {
+  catchsql {
+    SELECT sum(x) FROM 
+       (SELECT -9223372036854775807 AS x UNION ALL
+        SELECT -10 AS x);
+  }
+} {1 {integer overflow}}
+do_test func-18.19 {
+  catchsql {
+    SELECT sum(x) FROM (SELECT 9 AS x UNION ALL SELECT -10 AS x);
+  }
+} {0 -1}
+do_test func-18.20 {
+  catchsql {
+    SELECT sum(x) FROM (SELECT -9 AS x UNION ALL SELECT 10 AS x);
+  }
+} {0 1}
+do_test func-18.21 {
+  catchsql {
+    SELECT sum(x) FROM (SELECT -10 AS x UNION ALL SELECT 9 AS x);
+  }
+} {0 -1}
+do_test func-18.22 {
+  catchsql {
+    SELECT sum(x) FROM (SELECT 10 AS x UNION ALL SELECT -9 AS x);
+  }
+} {0 1}
+
+} ;# ifcapable compound&&subquery
+
+# Integer overflow on abs()
+#
+if {[working_64bit_int]} {
+  do_test func-18.31 {
+    catchsql {
+      SELECT abs(-9223372036854775807);
+    }
+  } {0 9223372036854775807}
+}
+do_test func-18.32 {
+  catchsql {
+    SELECT abs(-9223372036854775807-1);
+  }
+} {1 {integer overflow}}
+
+# The MATCH function exists but is only a stub and always throws an error.
+#
+do_test func-19.1 {
+  execsql {
+    SELECT match(a,b) FROM t1 WHERE 0;
+  }
+} {}
+do_test func-19.2 {
+  catchsql {
+    SELECT 'abc' MATCH 'xyz';
+  }
+} {1 {unable to use function MATCH in the requested context}}
+do_test func-19.3 {
+  catchsql {
+    SELECT 'abc' NOT MATCH 'xyz';
+  }
+} {1 {unable to use function MATCH in the requested context}}
+do_test func-19.4 {
+  catchsql {
+    SELECT match(1,2,3);
+  }
+} {1 {wrong number of arguments to function match()}}
+
+# Soundex tests.
+#
+if {![catch {db eval {SELECT soundex('hello')}}]} {
+  set i 0
+  foreach {name sdx} {
+    euler        E460
+    EULER        E460
+    Euler        E460
+    ellery       E460
+    gauss        G200
+    ghosh        G200
+    hilbert      H416
+    Heilbronn    H416
+    knuth        K530
+    kant         K530
+    Lloyd        L300
+    LADD         L300
+    Lukasiewicz  L222
+    Lissajous    L222
+    A            A000
+    12345        ?000
+  } {
+    incr i
+    do_test func-20.$i {
+      execsql {SELECT soundex($name)}
+    } $sdx
+  }
+}
+
+# Tests of the REPLACE function.
+#
+do_test func-21.1 {
+  catchsql {
+    SELECT replace(1,2);
+  }
+} {1 {wrong number of arguments to function replace()}}
+do_test func-21.2 {
+  catchsql {
+    SELECT replace(1,2,3,4);
+  }
+} {1 {wrong number of arguments to function replace()}}
+do_test func-21.3 {
+  execsql {
+    SELECT typeof(replace("This is the main test string", NULL, "ALT"));
+  }
+} {null}
+do_test func-21.4 {
+  execsql {
+    SELECT typeof(replace(NULL, "main", "ALT"));
+  }
+} {null}
+do_test func-21.5 {
+  execsql {
+    SELECT typeof(replace("This is the main test string", "main", NULL));
+  }
+} {null}
+do_test func-21.6 {
+  execsql {
+    SELECT replace("This is the main test string", "main", "ALT");
+  }
+} {{This is the ALT test string}}
+do_test func-21.7 {
+  execsql {
+    SELECT replace("This is the main test string", "main", "larger-main");
+  }
+} {{This is the larger-main test string}}
+do_test func-21.8 {
+  execsql {
+    SELECT replace("aaaaaaa", "a", "0123456789");
+  }
+} {0123456789012345678901234567890123456789012345678901234567890123456789}
+
+ifcapable tclvar {
+  do_test func-21.9 {
+    # Attempt to exploit a buffer-overflow that at one time existed 
+    # in the REPLACE function. 
+    set ::str "[string repeat A 29998]CC[string repeat A 35537]"
+    set ::rep [string repeat B 65536]
+    execsql {
+      SELECT LENGTH(REPLACE($::str, 'C', $::rep));
+    }
+  } [expr 29998 + 2*65536 + 35537]
+}
+
+# Tests for the TRIM, LTRIM and RTRIM functions.
+#
+do_test func-22.1 {
+  catchsql {SELECT trim(1,2,3)}
+} {1 {wrong number of arguments to function trim()}}
+do_test func-22.2 {
+  catchsql {SELECT ltrim(1,2,3)}
+} {1 {wrong number of arguments to function ltrim()}}
+do_test func-22.3 {
+  catchsql {SELECT rtrim(1,2,3)}
+} {1 {wrong number of arguments to function rtrim()}}
+do_test func-22.4 {
+  execsql {SELECT trim('  hi  ');}
+} {hi}
+do_test func-22.5 {
+  execsql {SELECT ltrim('  hi  ');}
+} {{hi  }}
+do_test func-22.6 {
+  execsql {SELECT rtrim('  hi  ');}
+} {{  hi}}
+do_test func-22.7 {
+  execsql {SELECT trim('  hi  ','xyz');}
+} {{  hi  }}
+do_test func-22.8 {
+  execsql {SELECT ltrim('  hi  ','xyz');}
+} {{  hi  }}
+do_test func-22.9 {
+  execsql {SELECT rtrim('  hi  ','xyz');}
+} {{  hi  }}
+do_test func-22.10 {
+  execsql {SELECT trim('xyxzy  hi  zzzy','xyz');}
+} {{  hi  }}
+do_test func-22.11 {
+  execsql {SELECT ltrim('xyxzy  hi  zzzy','xyz');}
+} {{  hi  zzzy}}
+do_test func-22.12 {
+  execsql {SELECT rtrim('xyxzy  hi  zzzy','xyz');}
+} {{xyxzy  hi  }}
+do_test func-22.13 {
+  execsql {SELECT trim('  hi  ','');}
+} {{  hi  }}
+if {[db one {PRAGMA encoding}]=="UTF-8"} {
+  do_test func-22.14 {
+    execsql {SELECT hex(trim(x'c280e1bfbff48fbfbf6869',x'6162e1bfbfc280'))}
+  } {F48FBFBF6869}
+  do_test func-22.15 {
+    execsql {SELECT hex(trim(x'6869c280e1bfbff48fbfbf61',
+                             x'6162e1bfbfc280f48fbfbf'))}
+  } {6869}
+  do_test func-22.16 {
+    execsql {SELECT hex(trim(x'ceb1ceb2ceb3',x'ceb1'));}
+  } {CEB2CEB3}
+}
+do_test func-22.20 {
+  execsql {SELECT typeof(trim(NULL));}
+} {null}
+do_test func-22.21 {
+  execsql {SELECT typeof(trim(NULL,'xyz'));}
+} {null}
+do_test func-22.22 {
+  execsql {SELECT typeof(trim('hello',NULL));}
+} {null}
+
+# This is to test the deprecated sqlite3_aggregate_count() API.
+#
+ifcapable deprecated {
+  do_test func-23.1 {
+    sqlite3_create_aggregate db
+    execsql {
+      SELECT legacy_count() FROM t6;
+    }
+  } {3}
+}
+
+# The group_concat() function.
+#
+do_test func-24.1 {
+  execsql {
+    SELECT group_concat(t1) FROM tbl1
+  }
+} {this,program,is,free,software}
+do_test func-24.2 {
+  execsql {
+    SELECT group_concat(t1,' ') FROM tbl1
+  }
+} {{this program is free software}}
+do_test func-24.3 {
+  execsql {
+    SELECT group_concat(t1,' ' || rowid || ' ') FROM tbl1
+  }
+} {{this 2 program 3 is 4 free 5 software}}
+do_test func-24.4 {
+  execsql {
+    SELECT group_concat(NULL,t1) FROM tbl1
+  }
+} {{}}
+do_test func-24.5 {
+  execsql {
+    SELECT group_concat(t1,NULL) FROM tbl1
+  }
+} {thisprogramisfreesoftware}
+do_test func-24.6 {
+  execsql {
+    SELECT 'BEGIN-'||group_concat(t1) FROM tbl1
+  }
+} {BEGIN-this,program,is,free,software}
+
+# Ticket #3179:  Make sure aggregate functions can take many arguments.
+# None of the built-in aggregates do this, so use the md5sum() from the
+# test extensions.
+#
+unset -nocomplain midargs
+set midargs {}
+unset -nocomplain midres
+set midres {}
+unset -nocomplain result
+for {set i 1} {$i<[sqlite3_limit db SQLITE_LIMIT_FUNCTION_ARG -1]} {incr i} {
+  append midargs ,'/$i'
+  append midres /$i
+  set result [md5 \
+     "this${midres}program${midres}is${midres}free${midres}software${midres}"]
+  set sql "SELECT md5sum(t1$midargs) FROM tbl1"
+  do_test func-24.7.$i {
+     db eval $::sql
+  } $result
+}
+
+# Ticket #3806.  If the initial string in a group_concat is an empty
+# string, the separator that follows should still be present.
+#
+do_test func-24.8 {
+  execsql {
+    SELECT group_concat(CASE t1 WHEN 'this' THEN '' ELSE t1 END) FROM tbl1
+  }
+} {,program,is,free,software}
+do_test func-24.9 {
+  execsql {
+    SELECT group_concat(CASE WHEN t1!='software' THEN '' ELSE t1 END) FROM tbl1
+  }
+} {,,,,software}
+
+# Ticket #3923.  Initial empty strings have a separator.  But initial
+# NULLs do not.
+#
+do_test func-24.10 {
+  execsql {
+    SELECT group_concat(CASE t1 WHEN 'this' THEN null ELSE t1 END) FROM tbl1
+  }
+} {program,is,free,software}
+do_test func-24.11 {
+  execsql {
+   SELECT group_concat(CASE WHEN t1!='software' THEN null ELSE t1 END) FROM tbl1
+  }
+} {software}
+do_test func-24.12 {
+  execsql {
+    SELECT group_concat(CASE t1 WHEN 'this' THEN ''
+                          WHEN 'program' THEN null ELSE t1 END) FROM tbl1
+  }
+} {,is,free,software}
+# Tests to verify ticket http://www.sqlite.org/src/tktview/55746f9e65f8587c0
+do_test func-24.13 {
+  execsql {
+    SELECT typeof(group_concat(x)) FROM (SELECT '' AS x);
+  }
+} {text}
+do_test func-24.14 {
+  execsql {
+    SELECT typeof(group_concat(x,''))
+      FROM (SELECT '' AS x UNION ALL SELECT '');
+  }
+} {text}
+
+
+# Use the test_isolation function to make sure that type conversions
+# on function arguments do not effect subsequent arguments.
+#
+do_test func-25.1 {
+  execsql {SELECT test_isolation(t1,t1) FROM tbl1}
+} {this program is free software}
+
+# Try to misuse the sqlite3_create_function() interface.  Verify that
+# errors are returned.
+#
+do_test func-26.1 {
+  abuse_create_function db
+} {}
+
+# The previous test (func-26.1) registered a function with a very long
+# function name that takes many arguments and always returns NULL.  Verify
+# that this function works correctly.
+#
+do_test func-26.2 {
+  set a {}
+  for {set i 1} {$i<=$::SQLITE_MAX_FUNCTION_ARG} {incr i} {
+    lappend a $i
+  }
+  db eval "
+     SELECT nullx_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789([join $a ,]);
+  "
+} {{}}
+do_test func-26.3 {
+  set a {}
+  for {set i 1} {$i<=$::SQLITE_MAX_FUNCTION_ARG+1} {incr i} {
+    lappend a $i
+  }
+  catchsql "
+     SELECT nullx_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789([join $a ,]);
+  "
+} {1 {too many arguments on function nullx_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789}}
+do_test func-26.4 {
+  set a {}
+  for {set i 1} {$i<=$::SQLITE_MAX_FUNCTION_ARG-1} {incr i} {
+    lappend a $i
+  }
+  catchsql "
+     SELECT nullx_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789([join $a ,]);
+  "
+} {1 {wrong number of arguments to function nullx_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789()}}
+do_test func-26.5 {
+  catchsql "
+     SELECT nullx_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_12345678a(0);
+  "
+} {1 {no such function: nullx_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_12345678a}}
+do_test func-26.6 {
+  catchsql "
+     SELECT nullx_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789a(0);
+  "
+} {1 {no such function: nullx_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789a}}
+
+do_test func-27.1 {
+  catchsql {SELECT coalesce()}
+} {1 {wrong number of arguments to function coalesce()}}
+do_test func-27.2 {
+  catchsql {SELECT coalesce(1)}
+} {1 {wrong number of arguments to function coalesce()}}
+do_test func-27.3 {
+  catchsql {SELECT coalesce(1,2)}
+} {0 1}
+
+# Ticket 2d401a94287b5
+# Unknown function in a DEFAULT expression causes a segfault.
+#
+do_test func-28.1 {
+  db eval {
+    CREATE TABLE t28(x, y DEFAULT(nosuchfunc(1)));
+  }
+  catchsql {
+    INSERT INTO t28(x) VALUES(1);
+  }
+} {1 {unknown function: nosuchfunc()}}
+
+# Verify that the length() and typeof() functions do not actually load
+# the content of their argument.
+#
+do_test func-29.1 {
+  db eval {
+    CREATE TABLE t29(id INTEGER PRIMARY KEY, x, y);
+    INSERT INTO t29 VALUES(1, 2, 3), (2, NULL, 4), (3, 4.5, 5);
+    INSERT INTO t29 VALUES(4, randomblob(1000000), 6);
+    INSERT INTO t29 VALUES(5, "hello", 7);
+  }
+  db close
+  sqlite3 db test.db
+  sqlite3_db_status db CACHE_MISS 1
+  db eval {SELECT typeof(x), length(x), typeof(y) FROM t29 ORDER BY id}
+} {integer 1 integer null {} integer real 3 integer blob 1000000 integer text 5 integer}
+do_test func-29.2 {
+  set x [lindex [sqlite3_db_status db CACHE_MISS 1] 1]
+  if {$x<5} {set x 1}
+  set x
+} {1}
+do_test func-29.3 {
+  db close
+  sqlite3 db test.db
+  sqlite3_db_status db CACHE_MISS 1
+  db eval {SELECT typeof(+x) FROM t29 ORDER BY id}
+} {integer null real blob text}
+if {[permutation] != "mmap"} {
+  ifcapable !direct_read {
+    do_test func-29.4 {
+      set x [lindex [sqlite3_db_status db CACHE_MISS 1] 1]
+      if {$x>100} {set x many}
+      set x
+    } {many}
+  }
+}
+do_test func-29.5 {
+  db close
+  sqlite3 db test.db
+  sqlite3_db_status db CACHE_MISS 1
+  db eval {SELECT sum(length(x)) FROM t29}
+} {1000009}
+do_test func-29.6 {
+  set x [lindex [sqlite3_db_status db CACHE_MISS 1] 1]
+  if {$x<5} {set x 1}
+  set x
+} {1}
+
+# The OP_Column opcode has an optimization that avoids loading content
+# for fields with content-length=0 when the content offset is on an overflow
+# page.  Make sure the optimization works.
+#
+do_execsql_test func-29.10 {
+  CREATE TABLE t29b(a,b,c,d,e,f,g,h,i);
+  INSERT INTO t29b 
+   VALUES(1, hex(randomblob(2000)), null, 0, 1, '', zeroblob(0),'x',x'01');
+  SELECT typeof(c), typeof(d), typeof(e), typeof(f),
+         typeof(g), typeof(h), typeof(i) FROM t29b;
+} {null integer integer text blob text blob}
+do_execsql_test func-29.11 {
+  SELECT length(f), length(g), length(h), length(i) FROM t29b;
+} {0 0 1 1}
+do_execsql_test func-29.12 {
+  SELECT quote(f), quote(g), quote(h), quote(i) FROM t29b;
+} {'' X'' 'x' X'01'}
+
+# EVIDENCE-OF: R-29701-50711 The unicode(X) function returns the numeric
+# unicode code point corresponding to the first character of the string
+# X.
+#
+# EVIDENCE-OF: R-55469-62130 The char(X1,X2,...,XN) function returns a
+# string composed of characters having the unicode code point values of
+# integers X1 through XN, respectively.
+#
+do_execsql_test func-30.1 {SELECT unicode('$');} 36
+do_execsql_test func-30.2 [subst {SELECT unicode('\u00A2');}] 162
+do_execsql_test func-30.3 [subst {SELECT unicode('\u20AC');}] 8364
+do_execsql_test func-30.4 {SELECT char(36,162,8364);} [subst {$\u00A2\u20AC}]
+
+for {set i 1} {$i<0xd800} {incr i 13} {
+  do_execsql_test func-30.5.$i {SELECT unicode(char($i))} $i
+}
+for {set i 57344} {$i<=0xfffd} {incr i 17} {
+  if {$i==0xfeff} continue
+  do_execsql_test func-30.5.$i {SELECT unicode(char($i))} $i
+}
+for {set i 65536} {$i<=0x10ffff} {incr i 139} {
+  do_execsql_test func-30.5.$i {SELECT unicode(char($i))} $i
+}
+
+# Test char().
+#
+do_execsql_test func-31.1 { 
+  SELECT char(), length(char()), typeof(char()) 
+} {{} 0 text}
+finish_test