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Using "SELECT ALL" instead of just "SELECT" on a query that uses a single

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unflattenable subquery or view in its FROM clause will force the subquery to
be manifested into a temporary table rather than run incrementally using a
co-routine.  This is a stop-gap means of controlling the decision to manifest
while we try to work out a better to make that decision automatically.

FossilOrigin-Name: a29e117d7ecec05da949348689dbfb0d3acb1280
This commit is contained in:
drh
2015-05-29 01:35:19 +00:00
parent c68275032e
commit 7cea7f95c7
5 changed files with 25 additions and 23 deletions
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25
src/sqliteInt.h
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@@ -2396,19 +2396,20 @@ struct Select {
** "Select Flag".
*/
#define SF_Distinct 0x0001 /* Output should be DISTINCT */
#define SF_Resolved 0x0002 /* Identifiers have been resolved */
#define SF_Aggregate 0x0004 /* Contains aggregate functions */
#define SF_UsesEphemeral 0x0008 /* Uses the OpenEphemeral opcode */
#define SF_Expanded 0x0010 /* sqlite3SelectExpand() called on this */
#define SF_HasTypeInfo 0x0020 /* FROM subqueries have Table metadata */
#define SF_Compound 0x0040 /* Part of a compound query */
#define SF_Values 0x0080 /* Synthesized from VALUES clause */
#define SF_MultiValue 0x0100 /* Single VALUES term with multiple rows */
#define SF_NestedFrom 0x0200 /* Part of a parenthesized FROM clause */
#define SF_MaybeConvert 0x0400 /* Need convertCompoundSelectToSubquery() */
#define SF_Recursive 0x0800 /* The recursive part of a recursive CTE */
#define SF_All 0x0002 /* Includes the ALL keyword */
#define SF_Resolved 0x0004 /* Identifiers have been resolved */
#define SF_Aggregate 0x0008 /* Contains aggregate functions */
#define SF_UsesEphemeral 0x0010 /* Uses the OpenEphemeral opcode */
#define SF_Expanded 0x0020 /* sqlite3SelectExpand() called on this */
#define SF_HasTypeInfo 0x0040 /* FROM subqueries have Table metadata */
#define SF_Compound 0x0080 /* Part of a compound query */
#define SF_Values 0x0100 /* Synthesized from VALUES clause */
#define SF_MultiValue 0x0200 /* Single VALUES term with multiple rows */
#define SF_NestedFrom 0x0400 /* Part of a parenthesized FROM clause */
#define SF_MaybeConvert 0x0800 /* Need convertCompoundSelectToSubquery() */
#define SF_MinMaxAgg 0x1000 /* Aggregate containing min() or max() */
#define SF_Converted 0x2000 /* By convertCompoundSelectToSubquery() */
#define SF_Recursive 0x2000 /* The recursive part of a recursive CTE */
#define SF_Converted 0x4000 /* By convertCompoundSelectToSubquery() */
/*