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Create a new affinity called FLEXNUM that works like NUMERIC except that it

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never tries to convert integer to real or real to integer.  The affinity is
only used internally - it is not possible to create a table column with this
affinity.  This affinity is used on subqueries and views that are built off
of a compound SELECT and where the datatype is controlled by a CAST expression.
dbsqlfuzz c9ee6f9a0a8b8fefb02cf69de2a8b67ca39525c8

FossilOrigin-Name: 44135d6ea84f7ba6b36549954b38a8bc048d5ffea5a9779e35950afa4eb2dfb2
This commit is contained in:
drh
2022-12-15 20:03:08 +00:00
parent 118b53bd21
commit 00d6b2755f
8 changed files with 75 additions and 42 deletions
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8
src/vdbe.c
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@@ -371,6 +371,10 @@ static void applyNumericAffinity(Mem *pRec, int bTryForInt){
** always preferred, even if the affinity is REAL, because
** an integer representation is more space efficient on disk.
**
** SQLITE_AFF_FLEXNUM:
** If the value is text, then try to convert it into a number of
** some kind (integer or real) but do not make any other changes.
**
** SQLITE_AFF_TEXT:
** Convert pRec to a text representation.
**
@@ -385,11 +389,11 @@ static void applyAffinity(
){
if( affinity>=SQLITE_AFF_NUMERIC ){
assert( affinity==SQLITE_AFF_INTEGER || affinity==SQLITE_AFF_REAL
|| affinity==SQLITE_AFF_NUMERIC );
|| affinity==SQLITE_AFF_NUMERIC || affinity==SQLITE_AFF_FLEXNUM );
if( (pRec->flags & MEM_Int)==0 ){ /*OPTIMIZATION-IF-FALSE*/
if( (pRec->flags & MEM_Real)==0 ){
if( pRec->flags & MEM_Str ) applyNumericAffinity(pRec,1);
}else{
}else if( affinity<=SQLITE_AFF_REAL ){
sqlite3VdbeIntegerAffinity(pRec);
}
}