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| author | drh <> | 2022-10-13 12:47:33 +0000 |
|---|---|---|
| committer | drh <> | 2022-10-13 12:47:33 +0000 |
| commit | e995d2c226e2b65c5e40cd238415bdfeb0936e8c (patch) | |
| tree | 9b2219f327bd1fb7af389ed14bdcd52f32e2e45d /src/pragma.c | |
| parent | 1ffb6be1195c592e6c85d57603984b1f36bfde62 (diff) | |
| download | sqlite-e995d2c226e2b65c5e40cd238415bdfeb0936e8c.tar.gz sqlite-e995d2c226e2b65c5e40cd238415bdfeb0936e8c.zip | |
Proposed optimization to the IS NULL and NOT NULL operators that avoids
loading the entire content of larges strings and BLOBs. Response to
[forum:/info/3c08d4715dc05b00|forum post 3c08d4715dc05b00].
FossilOrigin-Name: 45f171565442f9fd6574fb93ae7abe83c168b20be68af42531bc55571450d3ab
Diffstat (limited to 'src/pragma.c')
| -rw-r--r-- | src/pragma.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/src/pragma.c b/src/pragma.c index 7976f83c6..7aea3dd2c 100644 --- a/src/pragma.c +++ b/src/pragma.c @@ -1791,9 +1791,7 @@ void sqlite3Pragma( || pTab->iPKey==mxCol) ) mxCol--; if( mxCol>=0 ){ sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, mxCol, 3); - if( sqlite3VdbeGetLastOp(v)->opcode==OP_Column ){ - sqlite3VdbeChangeP5(v, OPFLAG_TYPEOFARG); - } + sqlite3VdbeTypeofColumn(v, 3); } if( !isQuick ){ |