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doc: Fix up spacing around verbatim DocBook elements

This commit is contained in:
Peter Eisentraut 2021-04-17 14:14:26 +02:00
parent f59b58e2a1
commit f7c09706c1
2 changed files with 24 additions and 24 deletions
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8
doc/src/sgml/libpq.sgml
View File

@ -5437,18 +5437,18 @@ int PQpipelineSync(PGconn *conn);
round-trip to get the results it needs. However, it's often possible to round-trip to get the results it needs. However, it's often possible to
adjust the client design to exchange the required information server-side. adjust the client design to exchange the required information server-side.
Read-modify-write cycles are especially good candidates; for example: Read-modify-write cycles are especially good candidates; for example:
<programlisting> <programlisting>
BEGIN; BEGIN;
SELECT x FROM mytable WHERE id = 42 FOR UPDATE; SELECT x FROM mytable WHERE id = 42 FOR UPDATE;
-- result: x=2 -- result: x=2
-- client adds 1 to x: -- client adds 1 to x:
UPDATE mytable SET x = 3 WHERE id = 42; UPDATE mytable SET x = 3 WHERE id = 42;
COMMIT; COMMIT;
</programlisting> </programlisting>
could be much more efficiently done with: could be much more efficiently done with:
<programlisting> <programlisting>
UPDATE mytable SET x = x + 1 WHERE id = 42; UPDATE mytable SET x = x + 1 WHERE id = 42;
</programlisting> </programlisting>
</para> </para>
<para> <para>

24
doc/src/sgml/logicaldecoding.sgml
View File

@ -830,10 +830,10 @@ typedef bool (*LogicalDecodeFilterPrepareCB) (struct LogicalDecodingContext *ctx
check if the plugin has already received this <command>PREPARE</command> check if the plugin has already received this <command>PREPARE</command>
in which case it can either error out or skip the remaining changes of in which case it can either error out or skip the remaining changes of
the transaction. the transaction.
<programlisting> <programlisting>
typedef void (*LogicalDecodeBeginPrepareCB) (struct LogicalDecodingContext *ctx, typedef void (*LogicalDecodeBeginPrepareCB) (struct LogicalDecodingContext *ctx,
ReorderBufferTXN *txn); ReorderBufferTXN *txn);
</programlisting> </programlisting>
</para> </para>
</sect3> </sect3>
@ -847,11 +847,11 @@ typedef bool (*LogicalDecodeFilterPrepareCB) (struct LogicalDecodingContext *ctx
rows will have been called before this, if there have been any modified rows will have been called before this, if there have been any modified
rows. The <parameter>gid</parameter> field, which is part of the rows. The <parameter>gid</parameter> field, which is part of the
<parameter>txn</parameter> parameter, can be used in this callback. <parameter>txn</parameter> parameter, can be used in this callback.
<programlisting> <programlisting>
typedef void (*LogicalDecodePrepareCB) (struct LogicalDecodingContext *ctx, typedef void (*LogicalDecodePrepareCB) (struct LogicalDecodingContext *ctx,
ReorderBufferTXN *txn, ReorderBufferTXN *txn,
XLogRecPtr prepare_lsn); XLogRecPtr prepare_lsn);
</programlisting> </programlisting>
</para> </para>
</sect3> </sect3>
@ -863,11 +863,11 @@ typedef bool (*LogicalDecodeFilterPrepareCB) (struct LogicalDecodingContext *ctx
whenever a transaction <command>COMMIT PREPARED</command> has been decoded. whenever a transaction <command>COMMIT PREPARED</command> has been decoded.
The <parameter>gid</parameter> field, which is part of the The <parameter>gid</parameter> field, which is part of the
<parameter>txn</parameter> parameter, can be used in this callback. <parameter>txn</parameter> parameter, can be used in this callback.
<programlisting> <programlisting>
typedef void (*LogicalDecodeCommitPreparedCB) (struct LogicalDecodingContext *ctx, typedef void (*LogicalDecodeCommitPreparedCB) (struct LogicalDecodingContext *ctx,
ReorderBufferTXN *txn, ReorderBufferTXN *txn,
XLogRecPtr commit_lsn); XLogRecPtr commit_lsn);
</programlisting> </programlisting>
</para> </para>
</sect3> </sect3>
@ -885,12 +885,12 @@ typedef bool (*LogicalDecodeFilterPrepareCB) (struct LogicalDecodingContext *ctx
it can apply the rollback, otherwise, it can skip the rollback operation. The it can apply the rollback, otherwise, it can skip the rollback operation. The
<parameter>gid</parameter> alone is not sufficient because the downstream <parameter>gid</parameter> alone is not sufficient because the downstream
node can have a prepared transaction with same identifier. node can have a prepared transaction with same identifier.
<programlisting> <programlisting>
typedef void (*LogicalDecodeRollbackPreparedCB) (struct LogicalDecodingContext *ctx, typedef void (*LogicalDecodeRollbackPreparedCB) (struct LogicalDecodingContext *ctx,
ReorderBufferTXN *txn, ReorderBufferTXN *txn,
XLogRecPtr prepare_end_lsn, XLogRecPtr prepare_end_lsn,
TimestampTz prepare_time); TimestampTz prepare_time);
</programlisting> </programlisting>
</para> </para>
</sect3> </sect3>