On the --summary output of wordcount, add the a PRAGMA integrity_check and

a 64-bit checksum of the entire table.

FossilOrigin-Name: 1d1d13b89056903543c909b094030d205473fa82

manifest

@@ -1,5 +1,5 @@
-C Add\smany\snew\soptions\sto\sthe\swordcount\stest\sprogram:\s--delete,\s--pagesize,\s\n--cachesize,\s--commit,\s--nosync,\sand\s--journal.
+C On\sthe\s--summary\soutput\sof\swordcount,\sadd\sthe\sa\sPRAGMA\sintegrity_check\sand\na\s64-bit\schecksum\sof\sthe\sentire\stable.
-D 2013-11-07T23:23:27.610
+D 2013-11-08T00:16:58.039
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in d12e4455cf7a36e42d3949876c1c3b88ff70867a
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -1083,7 +1083,7 @@ F test/without_rowid1.test aaa26da19d543cd8d3d2d0e686dfa255556c15c8
 F test/without_rowid2.test af260339f79d13cb220288b67cd287fbcf81ad99
 F test/without_rowid3.test eac3d5c8a1924725b58503a368f2cbd24fd6c8a0
 F test/without_rowid4.test 4e08bcbaee0399f35d58b5581881e7a6243d458a
-F test/wordcount.c f6af51ef16ae702b38328702cef3dd40e38f7315
+F test/wordcount.c 2c2cc1119de42e6730ca8bd149666f0e0095108a
 F test/zeroblob.test caaecfb4f908f7bc086ed238668049f96774d688
 F test/zerodamage.test 209d7ed441f44cc5299e4ebffbef06fd5aabfefd
 F tool/build-all-msvc.bat 1bac6adc3fdb4d9204f21d17b14be25778370e48 x
@@ -1135,7 +1135,7 @@ F tool/vdbe-compress.tcl f12c884766bd14277f4fcedcae07078011717381
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh d1a6de74685f360ab718efda6265994b99bbea01
 F tool/win/sqlite.vsix 030f3eeaf2cb811a3692ab9c14d021a75ce41fff
-P 404bd98fb41f71d041932d68a908570995825ec1
+P e938112d316ca31460f247cc104ca3ff1d60b4da
-R f6f16de177380742336b391bf29945a9
+R 07f50decdc1dc09be9505de398f87899
 U drh
-Z b0cbff2a366519cd35e9a89b0b70c0e7
+Z 566b6d1f5a2bce6772ade1b0310923b4

manifest.uuid

@@ -1 +1 @@
-e938112d316ca31460f247cc104ca3ff1d60b4da
+1d1d13b89056903543c909b094030d205473fa82

test/wordcount.c

@@ -93,16 +93,77 @@ static void traceCallback(void *NotUsed, const char *zSql){
 ** each column separated by a single space. */
 static int printResult(void *NotUsed, int nArg, char **azArg, char **azNm){
   int i;
-  const char *zFormat = "%s";
+  printf("--");
   for(i=0; i<nArg; i++){
-    printf(zFormat, azArg[i]);
+    printf(" %s", azArg[i]);
-    zFormat = " %s";
   }
   printf("\n");
   return 0;
 }
 
 
+/*
+** Add one character to a hash
+*/
+static void addCharToHash(unsigned int *a, unsigned char x){
+  if( a[0]<4 ){
+    a[1] = (a[1]<<8) | x;
+    a[0]++;
+  }else{
+    a[2] = (a[2]<<8) | x;
+    a[0]++;
+    if( a[0]==8 ){
+      a[3] += a[1] + a[4];
+      a[4] += a[2] + a[3];
+      a[0] = a[1] = a[2] = 0;
+    }
+  }    
+}
+
+/*
+** Compute the final hash value.
+*/
+static void finalHash(unsigned int *a, char *z){
+  a[3] += a[1] + a[4] + a[0];
+  a[4] += a[2] + a[3];
+  sqlite3_snprintf(17, z, "%08x%08x", a[3], a[4]);
+}
+
+
+/*
+** Implementation of a checksum() aggregate SQL function
+*/
+static void checksumStep(
+  sqlite3_context *context,
+  int argc,
+  sqlite3_value **argv
+){
+  const unsigned char *zVal;
+  int nVal, i, j;
+  unsigned int *a;
+  a = (unsigned*)sqlite3_aggregate_context(context, sizeof(unsigned int)*5);
+
+  if( a ){
+    for(i=0; i<argc; i++){
+      nVal = sqlite3_value_bytes(argv[i]);
+      zVal = (const unsigned char*)sqlite3_value_text(argv[i]);
+      if( zVal ) for(j=0; j<nVal; j++) addCharToHash(a, zVal[j]);
+      addCharToHash(a, '|');
+    }
+    addCharToHash(a, '\n');
+  }
+}
+static void checksumFinalize(sqlite3_context *context){
+  unsigned int *a;
+  char zResult[24];
+  a = sqlite3_aggregate_context(context, 0);
+  if( a ){
+    finalHash(a, zResult);
+    sqlite3_result_text(context, zResult, -1, SQLITE_TRANSIENT);
+  }
+}
+
+
 /* Define operating modes */
 #define MODE_INSERT     0
 #define MODE_REPLACE    1
@@ -357,13 +418,19 @@ int main(int argc, char **argv){
   sqlite3_finalize(pDelete);
 
   if( showSummary ){
+    sqlite3_create_function(db, "checksum", -1, SQLITE_UTF8, 0,
+                            0, checksumStep, checksumFinalize);
     sqlite3_exec(db, 
-      "SELECT '-- count(*):  ', count(*) FROM wordcount;\n"
+      "SELECT 'count(*):  ', count(*) FROM wordcount;\n"
-      "SELECT '-- sum(cnt):  ', sum(cnt) FROM wordcount;\n"
+      "SELECT 'sum(cnt):  ', sum(cnt) FROM wordcount;\n"
-      "SELECT '-- avg(cnt):  ', avg(cnt) FROM wordcount;\n"
+      "SELECT 'max(cnt):  ', max(cnt) FROM wordcount;\n"
-      "SELECT '-- sum(cnt=1):', sum(cnt=1) FROM wordcount;\n"
+      "SELECT 'avg(cnt):  ', avg(cnt) FROM wordcount;\n"
-      "SELECT '-- top 10:    ', group_concat(word, ', ') FROM "
+      "SELECT 'sum(cnt=1):', sum(cnt=1) FROM wordcount;\n"
-         "(SELECT word FROM wordcount ORDER BY cnt DESC LIMIT 10);\n",
+      "SELECT 'top 10:    ', group_concat(word, ', ') FROM "
+         "(SELECT word FROM wordcount ORDER BY cnt DESC LIMIT 10);\n"
+      "SELECT 'checksum:  ', checksum(word, cnt) FROM "
+         "(SELECT word, cnt FROM wordcount ORDER BY word);\n"
+      "PRAGMA integrity_check;\n",
       printResult, 0, 0);
   }