Add the "atrc" test program. "Atrc" is short for "ALTER TABLE RENAME COLUMN".

See the header comment on the program itself for further information.

FossilOrigin-Name: ed64a55a2242408ac0b889b330cf91d38a954399b75c6ebe71232613b864c70b

diff --git a/manifest b/manifest
index 863aea41fb990acef740baef4f1755067a94cee5..934a2b461792e04d73108c7f807dbbe7a1f8ab95 100644 (file)
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C If\sthe\snew\scolumn\sname\sin\san\sALTER\sTABLE\sRENAME\sCOLUMN\sstatement\sis\squoted,\nthen\salso\suse\squotes\sfor\sthe\scolumn\sname\sin\sthe\sedited\sSQL\sstatements.
-D 2018-08-11T20:38:33.809
+C Add\sthe\s"atrc"\stest\sprogram.\s\s\s"Atrc"\sis\sshort\sfor\s"ALTER\sTABLE\sRENAME\sCOLUMN".\nSee\sthe\sheader\scomment\son\sthe\sprogram\sitself\sfor\sfurther\sinformation.
+D 2018-08-11T20:46:54.161
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F Makefile.in 0a3a6c81e6fcb969ff9106e882f0a08547014ba463cb6beca4c4efaecc924ee6
@@ -625,6 +625,7 @@ F test/async5.test 383ab533fdb9f7ad228cc99ee66e1acb34cc0dc0
 F test/atof1.test ff0b0156fd705b67c506e1f2bfe9e26102bea9bd
 F test/atomic.test 065a453dde33c77ff586d91ccaa6ed419829d492dbb1a5694b8a09f3f9d7d061
 F test/atomic2.test b6863b4aa552543874f80b42fb3063f1c8c2e3d8e56b6562f00a3cc347b5c1da
+F test/atrc.c 834739c220d2715dd513ce76d4773216a9c1bffe40d992876d14c34e103f11be
 F test/attach.test f4b8918ba2f3e88e6883b8452340545f10a1388af808343c37fc5c577be8281c
 F test/attach2.test 256bd240da1835fb8408dd59fb7ef71f8358c7a756c46662434d11d07ba3a0ce
 F test/attach3.test c59d92791070c59272e00183b7353eeb94915976
@@ -1755,7 +1756,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 520c1c75dae5e3f4695fcdf0aad5fb9f492f0e528b5fbb49d5d3b5fc02762f47
-R 42d189b99bda0a148c429a132edf76e5
-U dan
-Z 03ad3aa61b255b569ff4ff7e8834b149
+P ca5184a25f9150540a3e401ef67df0606efa7a294d70e3fa5edad9854003eb36
+R cecd54c9d63229291534e29203ac7afc
+U drh
+Z 77329205a7cab2453b99ca75b5ef0d21

diff --git a/manifest.uuid b/manifest.uuid
index 58037da7cd307a6ea10d0b042d57e6c34c072fd0..04a611491e8955b5bbbff6c31b3051fa12729566 100644 (file)
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-ca5184a25f9150540a3e401ef67df0606efa7a294d70e3fa5edad9854003eb36
\ No newline at end of file
+ed64a55a2242408ac0b889b330cf91d38a954399b75c6ebe71232613b864c70b
\ No newline at end of file

diff --git a/test/atrc.c b/test/atrc.c
new file mode 100644 (file)
index 0000000..c4436f9
--- /dev/null
+++ b/test/atrc.c
@@ -0,0 +1,150 @@
+/*
+** This program generates a script that stresses the ALTER TABLE statement.
+** Compile like this:
+**
+**      gcc -g -c sqlite3.c
+**      gcc -g -o atrc atrc.c sqlite3.o -ldl -lpthread
+**
+** Run the problem this way:
+**
+**      ./atrc DATABASE | ./sqlite3 DATABASE
+**
+** This program "atrc" generates a script that can be fed into an ordinary
+** command-line shell.  The script performs many ALTER TABLE statements,
+** runs ".schema --indent" and "PRAGMA integrity_check;", does more
+** ALTER TABLE statements to restore the original schema, and then
+** runs "PRAGMA integrity_check" again.  Every table and column has its
+** name changed.  The entire script is contained within BEGIN...ROLLBACK
+** so that no changes are ever actually made to the database.
+*/
+#include "sqlite3.h"
+#include <stdio.h>
+
+/*
+** Generate the text of ALTER TABLE statements that will rename
+** every column in table zTable to a generic name composed from
+** zColPrefix and a sequential number.  The generated text is
+** appended pConvert.  If pUndo is not NULL, then SQL text that
+** will undo the change is appended to pUndo.
+**
+** The table to be converted must be in the "main" schema.
+*/
+int rename_all_columns_of_table(
+  sqlite3 *db,                   /* Database connection */
+  const char *zTab,              /* Table whose columns should all be renamed */
+  const char *zColPrefix,        /* Prefix for new column names */
+  sqlite3_str *pConvert,         /* Append ALTER TABLE statements here */
+  sqlite3_str *pUndo             /* SQL to undo the change, if not NULL */
+){
+  sqlite3_stmt *pStmt;
+  int rc;
+  int cnt = 0;
+
+  rc = sqlite3_prepare_v2(db,
+         "SELECT name FROM pragma_table_info(?1);",
+         -1, &pStmt, 0);
+  if( rc ) return rc;
+  sqlite3_bind_text(pStmt, 1, zTab, -1, SQLITE_STATIC);
+  while( sqlite3_step(pStmt)==SQLITE_ROW ){
+    const char *zCol = (const char*)sqlite3_column_text(pStmt, 0);
+    cnt++;
+    sqlite3_str_appendf(pConvert,
+      "ALTER TABLE \"%w\" RENAME COLUMN \"%w\" TO \"%w%d\";\n",
+      zTab, zCol, zColPrefix, cnt
+    );
+    if( pUndo ){
+      sqlite3_str_appendf(pUndo,
+        "ALTER TABLE \"%w\" RENAME COLUMN \"%w%d\" TO \"%w\";\n",
+        zTab, zColPrefix, cnt, zCol
+      );
+    }
+  }
+  sqlite3_finalize(pStmt);
+  return SQLITE_OK; 
+}
+
+/* Rename all tables and their columns in the main database
+*/
+int rename_all_tables(
+  sqlite3 *db,              /* Database connection */
+  sqlite3_str *pConvert,    /* Append SQL to do the rename here */
+  sqlite3_str *pUndo        /* Append SQL to undo the rename here */
+){
+  sqlite3_stmt *pStmt;
+  int rc;
+  int cnt = 0;
+
+  rc = sqlite3_prepare_v2(db,
+         "SELECT name FROM sqlite_master WHERE type='table'"
+         " AND name NOT LIKE 'sqlite_%';",
+         -1, &pStmt, 0);
+  if( rc ) return rc;
+  while( sqlite3_step(pStmt)==SQLITE_ROW ){
+    const char *zTab = (const char*)sqlite3_column_text(pStmt, 0);
+    char *zNewTab;
+    char zPrefix[2];
+
+    zPrefix[0] = (cnt%26) + 'a';
+    zPrefix[1] = 0;
+    zNewTab = sqlite3_mprintf("tx%d", ++cnt);
+    if( pUndo ){
+      sqlite3_str_appendf(pUndo,
+        "ALTER TABLE \"%s\" RENAME TO \"%w\";\n",
+        zNewTab, zTab
+      );
+    }
+    rename_all_columns_of_table(db, zTab, zPrefix, pConvert, pUndo);
+    sqlite3_str_appendf(pConvert,
+      "ALTER TABLE \"%w\" RENAME TO \"%s\";\n",
+      zTab, zNewTab
+    );
+    sqlite3_free(zNewTab);
+  }
+  sqlite3_finalize(pStmt);
+  return SQLITE_OK;
+}
+
+/*
+** Generate a script that does this:
+**
+**   (1) Start a transaction
+**   (2) Rename all tables and columns to use generic names.
+**   (3) Print the schema after this rename
+**   (4) Run pragma integrity_check
+**   (5) Do more ALTER TABLE statements to change the names back
+**   (6) Run pragma integrity_check again
+**   (7) Rollback the transaction
+*/
+int main(int argc, char **argv){
+  sqlite3 *db;
+  int rc;
+  sqlite3_str *pConvert;
+  sqlite3_str *pUndo;
+  char *zDbName;
+  char *zSql1, *zSql2;
+  if( argc!=2 ){
+    fprintf(stderr, "Usage: %s DATABASE\n", argv[0]);
+  }
+  zDbName = argv[1];
+  rc = sqlite3_open(zDbName, &db);
+  if( rc ){
+    fprintf(stderr, "sqlite3_open() returns %d\n", rc);
+    return 1;
+  }
+  pConvert = sqlite3_str_new(db);
+  pUndo = sqlite3_str_new(db);
+  rename_all_tables(db, pConvert, pUndo);
+  zSql1 = sqlite3_str_finish(pConvert);
+  zSql2 = sqlite3_str_finish(pUndo);
+  sqlite3_close(db);
+  printf("BEGIN;\n");
+  printf("%s", zSql1);
+  sqlite3_free(zSql1);
+  printf(".schema --indent\n");
+  printf("PRAGMA integrity_check;\n");
+  printf("%s", zSql2);
+  sqlite3_free(zSql2);
+  printf("PRAGMA integrity_check;\n");
+  printf("ROLLBACK;\n");
+  return 0; 
+}