Enhance "PRAGMA table_info" to that it provides information about eponymous

virtual tables.

FossilOrigin-Name: 53a1e5d51304cb3de700c1807a2c945a40240576

manifest

@@ -1,5 +1,5 @@
-C Prefer\sto\suse\spartial\sindexes\sfor\sfull\stable\sscans\swhen\sthat\sis\spossible.
-D 2016-06-08T18:07:21.900
+C Enhance\s"PRAGMA\stable_info"\sto\sthat\sit\sprovides\sinformation\sabout\seponymous\nvirtual\stables.
+D 2016-06-10T22:49:01.448
 F Makefile.in f3f7d2060ce03af4584e711ef3a626ef0b1d6340
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc 50149765ef72f4e652b9a0f1f6462c4784bb9423
@@ -329,7 +329,7 @@ F src/btmutex.c bc87dd3b062cc26edfe79918de2200ccb8d41e73
 F src/btree.c 2781fb1db1e46390a9c27a2162395f371577ac66
 F src/btree.h 2107a2630e02c8cba58bb12ce14e731e734ea29c
 F src/btreeInt.h c18b7d2a3494695133e4e60ee36061d37f45d9a5
-F src/build.c 535879738a9f9e351624ebe827bdfb6ef16475ae
+F src/build.c d1fdfd7ab8f5447e494ef15825973bf0719527c6
 F src/callback.c 2e76147783386374bf01b227f752c81ec872d730
 F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
 F src/ctime.c 999a828425b35b8092a8cde25690e71c20906344
@@ -375,7 +375,7 @@ F src/parse.y 01b9f37c4c7009ab56fda98bc7db4c42643cecfe
 F src/pcache.c 5583c8ade4b05075a60ba953ef471d1c1a9c05df
 F src/pcache.h 2cedcd8407eb23017d92790b112186886e179490
 F src/pcache1.c 7f51d2b541aab57596adf62db2c4bb025d34f04d
-F src/pragma.c d98039af2deb5a4990f6635462b3f61f325a6c75
+F src/pragma.c c8b499756658cb8b82cfdbb5845c22cf11f297aa
 F src/pragma.h 64c78a648751b9f4f297276c4eb7507b14b4628c
 F src/prepare.c 22df6171aec1d86904ed2ad30c2348a5748aa04e
 F src/printf.c a5f0ca08ddede803c241266abb46356ec748ded1
@@ -387,7 +387,7 @@ F src/shell.c 14ff7f660530a52b117d110ba3390b7b2eb719b6
 F src/sqlite.h.in 5f8113dbec74c6c093ead9930afb8c9fbd9f643d
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h 98f72cbfe00169c39089115427d06ea05fe4b4a2
-F src/sqliteInt.h 801e2a569ea79b09b87d045cd6f00ec88205f1f6
+F src/sqliteInt.h b425bb606c14c078b1c9feb7cf72f2f3a35be188
 F src/sqliteLimit.h c0373387c287c8d0932510b5547ecde31b5da247
 F src/status.c 70912d7be68e9e2dbc4010c93d344af61d4c59ba
 F src/table.c 5226df15ab9179b9ed558d89575ea0ce37b03fc9
@@ -1100,7 +1100,7 @@ F test/spellfix3.test 0f9efaaa502a0e0a09848028518a6fb096c8ad33
 F test/sqldiff1.test 28cd737cf1b0078b1ec1bbf425e674c47785835e
 F test/sqllimits1.test a74ee2a3740b9f9c2437c246d8fb77354862a142
 F test/sqllog.test 6af6cb0b09f4e44e1917e06ce85be7670302517a
-F test/stat.test 66e95f97b9f724f9ab921d054ee0db3c2689f1ee
+F test/stat.test 8544f219694807400c8fd1830e4ad858f5b1b23f
 F test/statfault.test f525a7bf633e50afd027700e9a486090684b1ac1
 F test/stmt.test 64844332db69cf1a735fcb3e11548557fc95392f
 F test/subquery.test d7268d193dd33d5505df965399d3a594e76ae13f
@@ -1501,7 +1501,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P f48a4ad33ecd4a86f5529596ff11829ba38b0875
-R f8f1ecf8d68a5747b29b0c8ae33faacb
+P fe1874321ba31cec9ae65387920c33d8d0178ed8
+R bcb028582306bc8630ca7310032e2582
 U drh
-Z bc2339201021198d1e3ee60eab532825
+Z 24931a2c89ab34cc35408cff5c484569

manifest.uuid

@@ -1 +1 @@
-fe1874321ba31cec9ae65387920c33d8d0178ed8
+53a1e5d51304cb3de700c1807a2c945a40240576

src/build.c

@@ -338,7 +338,7 @@ Table *sqlite3FindTable(sqlite3 *db, const char *zName, const char *zDatabase){
 */
 Table *sqlite3LocateTable(
   Parse *pParse,         /* context in which to report errors */
-  int isView,            /* True if looking for a VIEW rather than a TABLE */
+  u32 flags,             /* LOCATE_VIEW or LOCATE_NOERR */
   const char *zName,     /* Name of the table we are looking for */
   const char *zDbase     /* Name of the database.  Might be NULL */
 ){
@@ -352,7 +352,7 @@ Table *sqlite3LocateTable(
 
   p = sqlite3FindTable(pParse->db, zName, zDbase);
   if( p==0 ){
-    const char *zMsg = isView ? "no such view" : "no such table";
+    const char *zMsg = flags & LOCATE_VIEW ? "no such view" : "no such table";
 #ifndef SQLITE_OMIT_VIRTUALTABLE
     if( sqlite3FindDbName(pParse->db, zDbase)<1 ){
       /* If zName is the not the name of a table in the schema created using
@@ -364,6 +364,7 @@ Table *sqlite3LocateTable(
       }
     }
 #endif
+    if( (flags & LOCATE_NOERR)==0 ){
       if( zDbase ){
         sqlite3ErrorMsg(pParse, "%s: %s.%s", zMsg, zDbase, zName);
       }else{
@@ -371,6 +372,7 @@ Table *sqlite3LocateTable(
       }
       pParse->checkSchema = 1;
     }
+  }
 
   return p;
 }
@@ -386,7 +388,7 @@ Table *sqlite3LocateTable(
 */
 Table *sqlite3LocateTableItem(
   Parse *pParse, 
-  int isView, 
+  u32 flags,
   struct SrcList_item *p
 ){
   const char *zDb;
@@ -397,7 +399,7 @@ Table *sqlite3LocateTableItem(
   }else{
     zDb = p->zDatabase;
   }
-  return sqlite3LocateTable(pParse, isView, p->zName, zDb);
+  return sqlite3LocateTable(pParse, flags, p->zName, zDb);
 }
 
 /*
@@ -2504,6 +2506,7 @@ void sqlite3DropTable(Parse *pParse, SrcList *pName, int isView, int noErr){
   assert( pName->nSrc==1 );
   if( sqlite3ReadSchema(pParse) ) goto exit_drop_table;
   if( noErr ) db->suppressErr++;
+  assert( isView==0 || isView==LOCATE_VIEW );
   pTab = sqlite3LocateTableItem(pParse, isView, &pName->a[0]);
   if( noErr ) db->suppressErr--;
 

src/pragma.c

@@ -1052,7 +1052,7 @@ void sqlite3Pragma(
   */
   case PragTyp_TABLE_INFO: if( zRight ){
     Table *pTab;
-    pTab = sqlite3FindTable(db, zRight, zDb);
+    pTab = sqlite3LocateTable(pParse, LOCATE_NOERR, zRight, zDb);
     if( pTab ){
       static const char *azCol[] = {
          "cid", "name", "type", "notnull", "dflt_value", "pk"

src/sqliteInt.h

@@ -3671,8 +3671,10 @@ void sqlite3ExprIfTrue(Parse*, Expr*, int, int);
 void sqlite3ExprIfFalse(Parse*, Expr*, int, int);
 void sqlite3ExprIfFalseDup(Parse*, Expr*, int, int);
 Table *sqlite3FindTable(sqlite3*,const char*, const char*);
-Table *sqlite3LocateTable(Parse*,int isView,const char*, const char*);
-Table *sqlite3LocateTableItem(Parse*,int isView,struct SrcList_item *);
+#define LOCATE_VIEW    0x01
+#define LOCATE_NOERR   0x02
+Table *sqlite3LocateTable(Parse*,u32 flags,const char*, const char*);
+Table *sqlite3LocateTableItem(Parse*,u32 flags,struct SrcList_item *);
 Index *sqlite3FindIndex(sqlite3*,const char*, const char*);
 void sqlite3UnlinkAndDeleteTable(sqlite3*,int,const char*);
 void sqlite3UnlinkAndDeleteIndex(sqlite3*,int,const char*);

test/stat.test

@@ -32,6 +32,9 @@ db func a_string a_string
 
 register_dbstat_vtab db
 do_execsql_test stat-0.0 {
+  PRAGMA table_info(dbstat);
+} {/0 name STRING .* 1 path INTEGER .* 9 pgsize INTEGER/}
+do_execsql_test stat-0.1 {
   PRAGMA auto_vacuum = OFF;
   CREATE VIRTUAL TABLE temp.stat USING dbstat;
   SELECT * FROM stat;