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Enhance the shell tool ".dump PATTERN" command so that it dumps the contents of shadow tables when a virtual table is identified by the PATTERN.

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FossilOrigin-Name: b0bc5ab9ceec496ac260ccfd53b51a2b53a81576fbe04c97b99f6705b063c59f
This commit is contained in:
dan
2021-05-25 11:39:14 +00:00
parent c00727ab58
commit 78a9d7551c
3 changed files with 28 additions and 13 deletions
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27
src/shell.c.in
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@@ -7739,11 +7739,26 @@ static int do_meta_command(char *zLine, ShellState *p){
sqlite3_free(zLike);
goto meta_command_exit;
}
}else if( zLike ){
zLike = sqlite3_mprintf("%z OR name LIKE %Q ESCAPE '\\'",
zLike, azArg[i]);
}else{
zLike = sqlite3_mprintf("name LIKE %Q ESCAPE '\\'", azArg[i]);
/* azArg[i] contains a LIKE pattern. This ".dump" request should
** only dump data for tables for which either the table name matches
** the LIKE pattern, or the table appears to be a shadow table of
** a virtual table for which the name matches the LIKE pattern.
*/
char *zExpr = sqlite3_mprintf(
"name LIKE %Q ESCAPE '\\' OR EXISTS ("
" SELECT 1 FROM sqlite_schema WHERE "
" name LIKE %Q ESCAPE '\\' AND"
" sql LIKE 'CREATE VIRTUAL TABLE%%' AND"
" substr(o.name, 1, length(name)+1) == (name||'_')"
")", azArg[i], azArg[i]
);
if( zLike ){
zLike = sqlite3_mprintf("%z OR %z", zLike, zExpr);
}else{
zLike = zExpr;
}
}
}
@@ -7765,7 +7780,7 @@ static int do_meta_command(char *zLine, ShellState *p){
p->nErr = 0;
if( zLike==0 ) zLike = sqlite3_mprintf("true");
zSql = sqlite3_mprintf(
"SELECT name, type, sql FROM sqlite_schema "
"SELECT name, type, sql FROM sqlite_schema AS o "
"WHERE (%s) AND type=='table'"
" AND sql NOT NULL"
" ORDER BY tbl_name='sqlite_sequence', rowid",
@@ -7775,7 +7790,7 @@ static int do_meta_command(char *zLine, ShellState *p){
sqlite3_free(zSql);
if( (p->shellFlgs & SHFLG_DumpDataOnly)==0 ){
zSql = sqlite3_mprintf(
"SELECT sql FROM sqlite_schema "
"SELECT sql FROM sqlite_schema AS o "
"WHERE (%s) AND sql NOT NULL"
" AND type IN ('index','trigger','view')",
zLike