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sql_priv.h
/* Copyright (c) 2000, 2018, Oracle and/or its affiliates. Copyright (c) 2010, 2019, MariaDB This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ /** @file @details Mostly this file is used in the server. But a little part of it is used in mysqlbinlog too (definition of SELECT_DISTINCT and others). The consequence is that 90% of the file is wrapped in \#ifndef MYSQL_CLIENT, except the part which must be in the server and in the client. */ #ifndef SQL_PRIV_INCLUDED #define SQL_PRIV_INCLUDED #ifndef MYSQL_CLIENT /* Generates a warning that a feature is deprecated. After a specified version asserts that the feature is removed. Using it as WARN_DEPRECATED(thd, 6,2, "BAD", "'GOOD'"); Will result in a warning "The syntax 'BAD' is deprecated and will be removed in MySQL 6.2. Please use 'GOOD' instead" Note that in macro arguments BAD is not quoted, while 'GOOD' is. Note that the version is TWO numbers, separated with a comma (two macro arguments, that is) */ #define WARN_DEPRECATED(Thd,VerHi,VerLo,Old,New) \ do { \ compile_time_assert(MYSQL_VERSION_ID < VerHi * 10000 + VerLo * 100); \ if (((THD *) Thd) != NULL) \ push_warning_printf(((THD *) Thd), Sql_condition::WARN_LEVEL_WARN, \ ER_WARN_DEPRECATED_SYNTAX, \ ER_THD(((THD *) Thd), ER_WARN_DEPRECATED_SYNTAX), \ (Old), (New)); \ else \ sql_print_warning("The syntax '%s' is deprecated and will be removed " \ "in a future release. Please use %s instead.", \ (Old), (New)); \ } while(0) /* Generates a warning that a feature is deprecated and there is no replacement. Using it as WARN_DEPRECATED_NO_REPLACEMENT(thd, "BAD"); Will result in a warning "'BAD' is deprecated and will be removed in a future release." Note that in macro arguments BAD is not quoted. */ #define WARN_DEPRECATED_NO_REPLACEMENT(Thd,Old) \ do { \ THD *thd_= ((THD*) Thd); \ if (thd_ != NULL) \ push_warning_printf(thd_, Sql_condition::WARN_LEVEL_WARN, \ ER_WARN_DEPRECATED_SYNTAX_NO_REPLACEMENT, \ ER_THD(thd_, ER_WARN_DEPRECATED_SYNTAX_NO_REPLACEMENT), \ (Old)); \ else \ sql_print_warning("'%s' is deprecated and will be removed " \ "in a future release.", (Old)); \ } while(0) /*************************************************************************/ #endif /* This is included in the server and in the client. Options for select set by the yacc parser (stored in lex->options). NOTE log_event.h defines OPTIONS_WRITTEN_TO_BIN_LOG to specify what THD options list are written into binlog. These options can NOT change their values, or it will break replication between version. context is encoded as following: SELECT - SELECT_LEX_NODE::options THD - THD::options intern - neither. used only as func(..., select_node->options | thd->options | OPTION_XXX, ...) TODO: separate three contexts above, move them to separate bitfields. */ #define SELECT_DISTINCT (1ULL << 0) // SELECT, user #define SELECT_STRAIGHT_JOIN (1ULL << 1) // SELECT, user #define SELECT_DESCRIBE (1ULL << 2) // SELECT, user #define SELECT_SMALL_RESULT (1ULL << 3) // SELECT, user #define SELECT_BIG_RESULT (1ULL << 4) // SELECT, user #define OPTION_FOUND_ROWS (1ULL << 5) // SELECT, user #define OPTION_TO_QUERY_CACHE (1ULL << 6) // SELECT, user #define SELECT_NO_JOIN_CACHE (1ULL << 7) // intern /** always the opposite of OPTION_NOT_AUTOCOMMIT except when in fix_autocommit() */ #define OPTION_AUTOCOMMIT (1ULL << 8) // THD, user #define OPTION_BIG_SELECTS (1ULL << 9) // THD, user #define OPTION_LOG_OFF (1ULL << 10) // THD, user #define OPTION_QUOTE_SHOW_CREATE (1ULL << 11) // THD, user #define TMP_TABLE_ALL_COLUMNS (1ULL << 12) // SELECT, intern #define OPTION_WARNINGS (1ULL << 13) // THD, user #define OPTION_AUTO_IS_NULL (1ULL << 14) // THD, user, binlog #define OPTION_NO_CHECK_CONSTRAINT_CHECKS (1ULL << 15) #define OPTION_SAFE_UPDATES (1ULL << 16) // THD, user #define OPTION_BUFFER_RESULT (1ULL << 17) // SELECT, user #define OPTION_BIN_LOG (1ULL << 18) // THD, user #define OPTION_NOT_AUTOCOMMIT (1ULL << 19) // THD, user #define OPTION_BEGIN (1ULL << 20) // THD, intern #define OPTION_TABLE_LOCK (1ULL << 21) // THD, intern #define OPTION_QUICK (1ULL << 22) // SELECT (for DELETE) #define OPTION_KEEP_LOG (1ULL << 23) // THD, user #define OPTION_EXPLICIT_DEF_TIMESTAMP (1ULL << 24) // THD, user #define OPTION_GTID_BEGIN (1ULL << 25) // GTID BEGIN found in log /** The following can be set when importing tables in a 'wrong order' to suppress foreign key checks */ #define OPTION_NO_FOREIGN_KEY_CHECKS (1ULL << 26) // THD, user, binlog /** The following speeds up inserts to InnoDB tables by suppressing unique key checks in some cases */ #define OPTION_RELAXED_UNIQUE_CHECKS (1ULL << 27) // THD, user, binlog #define OPTION_IF_EXISTS (1ULL << 28) // binlog #define OPTION_SCHEMA_TABLE (1ULL << 29) // SELECT, intern /** Flag set if setup_tables already done */ #define OPTION_SETUP_TABLES_DONE (1ULL << 30) // intern /** If not set then the thread will ignore all warnings with level notes. */ #define OPTION_SQL_NOTES (1ULL << 31) // THD, user /** Force the used temporary table to be a MyISAM table (because we will use fulltext functions when reading from it. */ #define TMP_TABLE_FORCE_MYISAM (1ULL << 32) #define OPTION_PROFILING (1ULL << 33) /** Indicates that this is a HIGH_PRIORITY SELECT. Currently used only for printing of such selects. Type of locks to be acquired is specified directly. */ #define SELECT_HIGH_PRIORITY (1ULL << 34) // SELECT, user /** Is set in slave SQL thread when there was an error on master, which, when is not reproducible on slave (i.e. the query succeeds on slave), is not terminal to the state of repliation, and should be ignored. The slave SQL thread, however, needs to rollback the effects of the succeeded statement to keep replication consistent. */ #define OPTION_MASTER_SQL_ERROR (1ULL << 35) #define OPTION_SKIP_REPLICATION (1ULL << 37) // THD, user #define OPTION_RPL_SKIP_PARALLEL (1ULL << 38) #define OPTION_NO_QUERY_CACHE (1ULL << 39) // SELECT, user #define OPTION_PROCEDURE_CLAUSE (1ULL << 40) // Internal usage #define SELECT_NO_UNLOCK (1ULL << 41) // SELECT, intern #define OPTION_BIN_TMP_LOG_OFF (1ULL << 42) // disable binlog, intern /* Disable commit of binlog. Used to combine many DDL's and DML's as one */ #define OPTION_BIN_COMMIT_OFF (1ULL << 43) /* The following is used to detect a conflict with DISTINCT */ #define SELECT_ALL (1ULL << 44) // SELECT, user, parser #define OPTION_LEX_FOUND_COMMENT (1ULL << 0) // intern, parser /* The rest of the file is included in the server only */ #ifndef MYSQL_CLIENT /* @@optimizer_switch flags. These must be in sync with optimizer_switch_names */ #define OPTIMIZER_SWITCH_INDEX_MERGE (1ULL << 0) #define OPTIMIZER_SWITCH_INDEX_MERGE_UNION (1ULL << 1) #define OPTIMIZER_SWITCH_INDEX_MERGE_SORT_UNION (1ULL << 2) #define OPTIMIZER_SWITCH_INDEX_MERGE_INTERSECT (1ULL << 3) #define OPTIMIZER_SWITCH_INDEX_MERGE_SORT_INTERSECT (1ULL << 4) #define deprecated_ENGINE_CONDITION_PUSHDOWN (1ULL << 5) #define OPTIMIZER_SWITCH_INDEX_COND_PUSHDOWN (1ULL << 6) #define OPTIMIZER_SWITCH_DERIVED_MERGE (1ULL << 7) #define OPTIMIZER_SWITCH_DERIVED_WITH_KEYS (1ULL << 8) #define OPTIMIZER_SWITCH_FIRSTMATCH (1ULL << 9) #define OPTIMIZER_SWITCH_LOOSE_SCAN (1ULL << 10) #define OPTIMIZER_SWITCH_MATERIALIZATION (1ULL << 11) #define OPTIMIZER_SWITCH_IN_TO_EXISTS (1ULL << 12) #define OPTIMIZER_SWITCH_SEMIJOIN (1ULL << 13) #define OPTIMIZER_SWITCH_PARTIAL_MATCH_ROWID_MERGE (1ULL << 14) #define OPTIMIZER_SWITCH_PARTIAL_MATCH_TABLE_SCAN (1ULL << 15) #define OPTIMIZER_SWITCH_SUBQUERY_CACHE (1ULL << 16) /** If this is off, MRR is never used. */ #define OPTIMIZER_SWITCH_MRR (1ULL << 17) /** If OPTIMIZER_SWITCH_MRR is on and this is on, MRR is used depending on a cost-based choice ("automatic"). If OPTIMIZER_SWITCH_MRR is on and this is off, MRR is "forced" (i.e. used as long as the storage engine is capable of doing it). */ #define OPTIMIZER_SWITCH_MRR_COST_BASED (1ULL << 18) #define OPTIMIZER_SWITCH_MRR_SORT_KEYS (1ULL << 19) #define OPTIMIZER_SWITCH_OUTER_JOIN_WITH_CACHE (1ULL << 20) #define OPTIMIZER_SWITCH_SEMIJOIN_WITH_CACHE (1ULL << 21) #define OPTIMIZER_SWITCH_JOIN_CACHE_INCREMENTAL (1ULL << 22) #define OPTIMIZER_SWITCH_JOIN_CACHE_HASHED (1ULL << 23) #define OPTIMIZER_SWITCH_JOIN_CACHE_BKA (1ULL << 24) #define OPTIMIZER_SWITCH_OPTIMIZE_JOIN_BUFFER_SIZE (1ULL << 25) #define OPTIMIZER_SWITCH_TABLE_ELIMINATION (1ULL << 26) #define OPTIMIZER_SWITCH_EXTENDED_KEYS (1ULL << 27) #define OPTIMIZER_SWITCH_EXISTS_TO_IN (1ULL << 28) #define OPTIMIZER_SWITCH_ORDERBY_EQ_PROP (1ULL << 29) #define OPTIMIZER_SWITCH_COND_PUSHDOWN_FOR_DERIVED (1ULL << 30) #define OPTIMIZER_SWITCH_SPLIT_MATERIALIZED (1ULL << 31) #define OPTIMIZER_SWITCH_COND_PUSHDOWN_FOR_SUBQUERY (1ULL << 32) #define OPTIMIZER_SWITCH_USE_ROWID_FILTER (1ULL << 33) #define OPTIMIZER_SWITCH_COND_PUSHDOWN_FROM_HAVING (1ULL << 34) #define OPTIMIZER_SWITCH_NOT_NULL_RANGE_SCAN (1ULL << 35) #define OPTIMIZER_SWITCH_HASH_JOIN_CARDINALITY (1ULL << 36) #define OPTIMIZER_SWITCH_CSET_NARROWING (1ULL << 37) #define OPTIMIZER_SWITCH_DEFAULT (OPTIMIZER_SWITCH_INDEX_MERGE | \ OPTIMIZER_SWITCH_INDEX_MERGE_UNION | \ OPTIMIZER_SWITCH_INDEX_MERGE_SORT_UNION | \ OPTIMIZER_SWITCH_INDEX_MERGE_INTERSECT | \ OPTIMIZER_SWITCH_INDEX_COND_PUSHDOWN | \ OPTIMIZER_SWITCH_DERIVED_MERGE | \ OPTIMIZER_SWITCH_DERIVED_WITH_KEYS | \ OPTIMIZER_SWITCH_TABLE_ELIMINATION | \ OPTIMIZER_SWITCH_EXTENDED_KEYS | \ OPTIMIZER_SWITCH_IN_TO_EXISTS | \ OPTIMIZER_SWITCH_MATERIALIZATION | \ OPTIMIZER_SWITCH_PARTIAL_MATCH_ROWID_MERGE|\ OPTIMIZER_SWITCH_PARTIAL_MATCH_TABLE_SCAN|\ OPTIMIZER_SWITCH_OUTER_JOIN_WITH_CACHE | \ OPTIMIZER_SWITCH_SEMIJOIN_WITH_CACHE | \ OPTIMIZER_SWITCH_JOIN_CACHE_INCREMENTAL | \ OPTIMIZER_SWITCH_JOIN_CACHE_HASHED | \ OPTIMIZER_SWITCH_JOIN_CACHE_BKA | \ OPTIMIZER_SWITCH_SUBQUERY_CACHE | \ OPTIMIZER_SWITCH_SEMIJOIN | \ OPTIMIZER_SWITCH_FIRSTMATCH | \ OPTIMIZER_SWITCH_LOOSE_SCAN | \ OPTIMIZER_SWITCH_EXISTS_TO_IN | \ OPTIMIZER_SWITCH_ORDERBY_EQ_PROP | \ OPTIMIZER_SWITCH_COND_PUSHDOWN_FOR_DERIVED | \ OPTIMIZER_SWITCH_SPLIT_MATERIALIZED | \ OPTIMIZER_SWITCH_COND_PUSHDOWN_FOR_SUBQUERY | \ OPTIMIZER_SWITCH_USE_ROWID_FILTER | \ OPTIMIZER_SWITCH_COND_PUSHDOWN_FROM_HAVING | \ OPTIMIZER_SWITCH_OPTIMIZE_JOIN_BUFFER_SIZE) /* See adjust_secondary_key_cost in sys_vars.cc for symbolic names. */ #define OPTIMIZER_ADJ_SEC_KEY_COST (1) #define OPTIMIZER_ADJ_DISABLE_MAX_SEEKS (2) #define OPTIMIZER_ADJ_DISABLE_FORCE_INDEX_GROUP_BY (4) #define OPTIMIZER_FIX_INNODB_CARDINALITY (8) #define OPTIMIZER_ADJ_FIX_REUSE_RANGE_FOR_REF (16) #define OPTIMIZER_ADJ_FIX_CARD_MULT (32) #define OPTIMIZER_ADJ_DEFAULT (OPTIMIZER_ADJ_FIX_REUSE_RANGE_FOR_REF | \ OPTIMIZER_ADJ_FIX_CARD_MULT) /* Replication uses 8 bytes to store SQL_MODE in the binary log. The day you use strictly more than 64 bits by adding one more define above, you should contact the replication team because the replication code should then be updated (to store more bytes on disk). NOTE: When adding new SQL_MODE types, make sure to also add them to the scripts used for creating the MySQL system tables in scripts/mysql_system_tables.sql and scripts/mysql_system_tables_fix.sql */ /* Flags below are set when we perform context analysis of the statement and make subqueries non-const. It prevents subquery evaluation at context analysis stage. */ /* Don't evaluate this subquery during statement prepare even if it's a constant one. The flag is switched off in the end of mysqld_stmt_prepare. */ #define CONTEXT_ANALYSIS_ONLY_PREPARE 1 /* Special JOIN::prepare mode: changing of query is prohibited. When creating a view, we need to just check its syntax omitting any optimizations: afterwards definition of the view will be reconstructed by means of ::print() methods and written to to an .frm file. We need this definition to stay untouched. */ #define CONTEXT_ANALYSIS_ONLY_VIEW 2 /* Don't evaluate this subquery during derived table prepare even if it's a constant one. */ #define CONTEXT_ANALYSIS_ONLY_DERIVED 4 /* Don't evaluate constant sub-expressions of virtual column expressions when opening tables */ #define CONTEXT_ANALYSIS_ONLY_VCOL_EXPR 8 /* Uncachable causes: */ /* This subquery has fields from outer query (put by user) */ #define UNCACHEABLE_DEPENDENT_GENERATED 1 /* This subquery contains functions with random result. Something that is uncacheable is by default unmergeable. */ #define UNCACHEABLE_RAND 2 /* This subquery contains functions with side effect */ #define UNCACHEABLE_SIDEEFFECT 4 /* Forcing to save JOIN tables for explain */ #define UNCACHEABLE_EXPLAIN 8 /* For uncorrelated SELECT in an UNION with some correlated SELECTs */ #define UNCACHEABLE_UNITED 16 #define UNCACHEABLE_CHECKOPTION 32 /* This subquery has fields from outer query injected during transformation process */ #define UNCACHEABLE_DEPENDENT_INJECTED 64 /* This subquery has fields from outer query (any nature) */ #define UNCACHEABLE_DEPENDENT (UNCACHEABLE_DEPENDENT_GENERATED | \ UNCACHEABLE_DEPENDENT_INJECTED) /* Used to check GROUP BY list in the MODE_ONLY_FULL_GROUP_BY mode */ #define UNDEF_POS (-1) #define IN_SUBQUERY_CONVERSION_THRESHOLD 1000 #endif /* !MYSQL_CLIENT */ /* BINLOG_DUMP options */ #define BINLOG_DUMP_NON_BLOCK 1 #define BINLOG_SEND_ANNOTATE_ROWS_EVENT 2 #ifndef MYSQL_CLIENT /* Field::is_equal() return codes. */ #define IS_EQUAL_NO 0 #define IS_EQUAL_YES 1 /** new_field has compatible packed representation with old type, so it is theoretically possible to perform change by only updating data dictionary without changing table rows */ #define IS_EQUAL_PACK_LENGTH 2 enum enum_parsing_place { NO_MATTER, IN_HAVING, SELECT_LIST, IN_WHERE, IN_ON, IN_GROUP_BY, IN_ORDER_BY, IN_UPDATE_ON_DUP_KEY, IN_PART_FUNC, BEFORE_OPT_LIST, AFTER_LIST, FOR_LOOP_BOUND, IN_RETURNING, PARSING_PLACE_SIZE /* always should be the last */ }; class sys_var; enum enum_yes_no_unknown { TVL_YES, TVL_NO, TVL_UNKNOWN }; #ifdef MYSQL_SERVER /* External variables */ /* yy_*.cc */ #ifndef DBUG_OFF extern void turn_parser_debug_on_MYSQLparse(); extern void turn_parser_debug_on_ORAparse(); #endif /** convert a hex digit into number. */ inline int hexchar_to_int(char c) { if (c <= '9' && c >= '0') return c-'0'; c|=32; if (c <= 'f' && c >= 'a') return c-'a'+10; return -1; } /* This must match the path length limit in the ER_NOT_RW_DIR error msg. */ #define ER_NOT_RW_DIR_PATHSIZE 200 #define IS_TABLESPACES_TABLESPACE_NAME 0 #define IS_TABLESPACES_ENGINE 1 #define IS_TABLESPACES_TABLESPACE_TYPE 2 #define IS_TABLESPACES_LOGFILE_GROUP_NAME 3 #define IS_TABLESPACES_EXTENT_SIZE 4 #define IS_TABLESPACES_AUTOEXTEND_SIZE 5 #define IS_TABLESPACES_MAXIMUM_SIZE 6 #define IS_TABLESPACES_NODEGROUP_ID 7 #define IS_TABLESPACES_TABLESPACE_COMMENT 8 bool db_name_is_in_ignore_db_dirs_list(const char *dbase); #endif /* MYSQL_SERVER */ #endif /* MYSQL_CLIENT */ #endif /* SQL_PRIV_INCLUDED */
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