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Commit3dec141

Hiroshi Inoue

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Enable backward sequential scan even after reaching EOF.

1 parent9e34883 commit3dec141Copy full SHA for 3dec141

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1 file changed

-21

lines changed

src/backend/access/heap
- heapam.c

1 file changed

-21

lines changed

`‎src/backend/access/heap/heapam.c‎`

Lines changed: 1 addition & 21 deletions

Original file line number	Diff line number	Diff line change
`@@ -8,7 +8,7 @@`
`8`	`8`	`*`
`9`	`9`	`*`
`10`	`10`	`* IDENTIFICATION`
`11`		`- * $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.65 2000/01/26 05:55:56 momjian Exp $`
	`11`	`+ * $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.66 2000/02/09 03:49:47 inoue Exp $`
`12`	`12`	`*`
`13`	`13`	`*`
`14`	`14`	`* INTERFACE ROUTINES`
`@@ -848,11 +848,6 @@ heap_getnext(HeapScanDesc scandesc, int backw)`
`848`	`848`	`if (scan->rs_ptup.t_data==scan->rs_ctup.t_data&&`
`849`	`849`	`BufferIsInvalid(scan->rs_pbuf))`
`850`	`850`	`{`
`851`		`-if (BufferIsValid(scan->rs_nbuf))`
`852`		`-ReleaseBuffer(scan->rs_nbuf);`
`853`		`-scan->rs_ntup.t_datamcxt=NULL;`
`854`		`-scan->rs_ntup.t_data=NULL;`
`855`		`-scan->rs_nbuf=UnknownBuffer;`
`856`	`851`	`returnNULL;`
`857`	`852`	`}`
`858`	`853`
`@@ -910,11 +905,6 @@ heap_getnext(HeapScanDesc scandesc, int backw)`
`910`	`905`	`scan->rs_ptup.t_datamcxt=NULL;`
`911`	`906`	`scan->rs_ptup.t_data=NULL;`
`912`	`907`	`scan->rs_pbuf=InvalidBuffer;`
`913`		`-if (BufferIsValid(scan->rs_nbuf))`
`914`		`-ReleaseBuffer(scan->rs_nbuf);`
`915`		`-scan->rs_ntup.t_datamcxt=NULL;`
`916`		`-scan->rs_ntup.t_data=NULL;`
`917`		`-scan->rs_nbuf=InvalidBuffer;`
`918`	`908`	`returnNULL;`
`919`	`909`	`}`
`920`	`910`
`@@ -934,11 +924,6 @@ heap_getnext(HeapScanDesc scandesc, int backw)`
`934`	`924`	`if (scan->rs_ctup.t_data==scan->rs_ntup.t_data&&`
`935`	`925`	`BufferIsInvalid(scan->rs_nbuf))`
`936`	`926`	`{`
`937`		`-if (BufferIsValid(scan->rs_pbuf))`
`938`		`-ReleaseBuffer(scan->rs_pbuf);`
`939`		`-scan->rs_ptup.t_datamcxt=NULL;`
`940`		`-scan->rs_ptup.t_data=NULL;`
`941`		`-scan->rs_pbuf=UnknownBuffer;`
`942`	`927`	`HEAPDEBUG_3;/* heap_getnext returns NULL at end */`
`943`	`928`	`returnNULL;`
`944`	`929`	`}`
`@@ -998,11 +983,6 @@ heap_getnext(HeapScanDesc scandesc, int backw)`
`998`	`983`	`scan->rs_ntup.t_datamcxt=NULL;`
`999`	`984`	`scan->rs_ntup.t_data=NULL;`
`1000`	`985`	`scan->rs_nbuf=InvalidBuffer;`
`1001`		`-if (BufferIsValid(scan->rs_pbuf))`
`1002`		`-ReleaseBuffer(scan->rs_pbuf);`
`1003`		`-scan->rs_ptup.t_datamcxt=NULL;`
`1004`		`-scan->rs_ptup.t_data=NULL;`
`1005`		`-scan->rs_pbuf=InvalidBuffer;`
`1006`	`986`	`HEAPDEBUG_6;/* heap_getnext returning EOS */`
`1007`	`987`	`returnNULL;`
`1008`	`988`	`}`

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Commit3dec141

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`‎src/backend/access/heap/heapam.c‎`

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