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Docs/manual.texi: Added Innobase documentation configure.in: Incremented version include/my_base.h: Added option for Innobase myisam/mi_check.c: cleanup mysql-test/t/bdb.test: cleanup mysql-test/t/innobase.test: Extended with new tests from bdb.test mysql-test/t/merge.test: Added test of SHOW create mysys/my_init.c: Fix for UNIXWARE 7 scripts/mysql_install_db.sh: Always write how to start mysqld scripts/safe_mysqld.sh: Fixed type sql/ha_innobase.cc: Update to new version sql/ha_innobase.h: Update to new version sql/handler.h: Added 'update_table_comment()' and 'append_create_info()' sql/sql_delete.cc: Fixes for Innobase sql/sql_select.cc: Fixes for Innobase sql/sql_show.cc: Append create information (for MERGE tables) sql/sql_update.cc: Fixes for Innobase
130 lines
4.6 KiB
C
130 lines
4.6 KiB
C
/***********************************************************************
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Comparison services for records
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(c) 1994-1996 Innobase Oy
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Created 7/1/1994 Heikki Tuuri
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************************************************************************/
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#ifndef rem0cmp_h
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#define rem0cmp_h
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#include "univ.i"
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#include "data0data.h"
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#include "data0type.h"
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#include "dict0dict.h"
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#include "rem0rec.h"
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/*****************************************************************
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This function is used to compare two dfields where at least the first
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has its data type field set. */
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UNIV_INLINE
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int
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cmp_dfield_dfield(
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/*==============*/
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/* out: 1, 0, -1, if dfield1 is greater, equal,
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less than dfield2, respectively */
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dfield_t* dfield1,/* in: data field; must have type field set */
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dfield_t* dfield2);/* in: data field */
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/*****************************************************************
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This function is used to compare a data tuple to a physical record.
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Only dtuple->n_fields_cmp first fields are taken into account for
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the the data tuple! If we denote by n = n_fields_cmp, then rec must
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have either m >= n fields, or it must differ from dtuple in some of
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the m fields rec has. */
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int
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cmp_dtuple_rec_with_match(
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/*======================*/
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/* out: 1, 0, -1, if dtuple is greater, equal,
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less than rec, respectively, when only the
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common first fields are compared */
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dtuple_t* dtuple, /* in: data tuple */
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rec_t* rec, /* in: physical record which differs from
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dtuple in some of the common fields, or which
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has an equal number or more fields than
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dtuple */
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ulint* matched_fields, /* in/out: number of already completely
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matched fields; when function returns,
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contains the value for current comparison */
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ulint* matched_bytes); /* in/out: number of already matched
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bytes within the first field not completely
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matched; when function returns, contains the
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value for current comparison */
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/******************************************************************
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Compares a data tuple to a physical record. */
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int
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cmp_dtuple_rec(
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/*===========*/
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/* out: 1, 0, -1, if dtuple is greater, equal,
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less than rec, respectively; see the comments
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for cmp_dtuple_rec_with_match */
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dtuple_t* dtuple, /* in: data tuple */
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rec_t* rec); /* in: physical record */
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/******************************************************************
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Checks if a dtuple is a prefix of a record. The last field in dtuple
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is allowed to be a prefix of the corresponding field in the record. */
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ibool
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cmp_dtuple_is_prefix_of_rec(
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/*========================*/
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/* out: TRUE if prefix */
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dtuple_t* dtuple, /* in: data tuple */
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rec_t* rec); /* in: physical record */
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/******************************************************************
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Compares a prefix of a data tuple to a prefix of a physical record for
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equality. If there are less fields in rec than parameter n_fields, FALSE
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is returned. NOTE that n_fields_cmp of dtuple does not affect this
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comparison. */
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ibool
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cmp_dtuple_rec_prefix_equal(
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/*========================*/
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/* out: TRUE if equal */
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dtuple_t* dtuple, /* in: data tuple */
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rec_t* rec, /* in: physical record */
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ulint n_fields); /* in: number of fields which should be
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compared; must not exceed the number of
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fields in dtuple */
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/*****************************************************************
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This function is used to compare two physical records. Only the common
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first fields are compared. */
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int
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cmp_rec_rec_with_match(
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/*===================*/
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/* out: 1, 0 , -1 if rec1 is greater, equal,
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less, respectively, than rec2; only the common
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first fields are compared */
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rec_t* rec1, /* in: physical record */
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rec_t* rec2, /* in: physical record */
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dict_index_t* index, /* in: data dictionary index */
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ulint* matched_fields, /* in/out: number of already completely
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matched fields; when the function returns,
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contains the value the for current
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comparison */
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ulint* matched_bytes);/* in/out: number of already matched
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bytes within the first field not completely
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matched; when the function returns, contains
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the value for the current comparison */
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/*****************************************************************
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This function is used to compare two physical records. Only the common
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first fields are compared. */
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UNIV_INLINE
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int
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cmp_rec_rec(
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/*========*/
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/* out: 1, 0 , -1 if rec1 is greater, equal,
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less, respectively, than rec2; only the common
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first fields are compared */
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rec_t* rec1, /* in: physical record */
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rec_t* rec2, /* in: physical record */
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dict_index_t* index); /* in: data dictionary index */
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#ifndef UNIV_NONINL
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#include "rem0cmp.ic"
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#endif
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#endif
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