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Add a SELECTTRACE() macro to indicate when column names are assigned to

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a SELECT statement.  This helps with debugging for tickets like
[de3403bf5ae5f72e] and [3b4450072511e621].

FossilOrigin-Name: 8f194008c3aaa4ef287200e37bc5278ba9c377a7091ee3f95bad66513226b083
This commit is contained in:
drh
2017-12-23 11:51:40 +00:00
parent 5a699a01ca
commit 07859486c6
3 changed files with 8 additions and 7 deletions
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src/select.c
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@@ -1596,6 +1596,7 @@ static void generateColumnNames(
if( pParse->colNamesSet || db->mallocFailed ) return;
/* Column names are determined by the left-most term of a compound select */
while( pSelect->pPrior ) pSelect = pSelect->pPrior;
SELECTTRACE(1,pParse,pSelect,("generating column names\n"));
pTabList = pSelect->pSrc;
pEList = pSelect->pEList;
assert( v!=0 );