Server System Variables ’IF prio!=ERROR THEN unset prio.’; The value displayed by  SHOW WARNINGS  indicates the “decompiled”  canonical representation after the rule set has been successfully parsed and compiled into internal form. Semantically, this canonical form is identical to the value assigned to  dragnet.log_error_filter_rules , but there may be some differences between the assigned and canonical values, as illustrated by the preceding example: For additional information, see Section 5.4.2.4, “Types of Error Log Filtering” , and Section 5.5.3, “Error Log Components” . Whether optimizer JSON output should add end markers. See MySQL Internals: The end_markers_in_json System Variable. This variable indicates the number of equality ranges in an equality comparison condition when the optimizer should switch from using index dives to index statistics in estimating the number of qualifying rows. It applies to evaluation of expressions that have either of these equivalent forms, where the optimizer uses a nonunique index to look up  col_name  values: In both cases, the expression contains  N  equality ranges. The optimizer can make row estimates using index dives or index statistics. If  eq_range_index_dive_limit  is greater than 0, the optimizer 796 col_name  IN( val1 , ...,  valN ) col_name  =  val1  OR ... OR  col_name  =  valN •The  <>  operator is changed to  != . •The numeric priority of 0 is changed to the corresponding priority symbol  ERROR . •Optional spaces are removed. • end_markers_in_json • eq_range_index_dive_limit Command-Line Format --end-markers-in-json[={OFF|ON}] System Variable end_markers_in_json Scope Global, Session Dynamic Yes SET_VAR  Hint Applies Yes Type Boolean Default Value OFF Command-Line Format --eq-range-index-dive-limit=# System Variable eq_range_index_dive_limit Scope Global, Session Dynamic Yes SET_VAR  Hint Applies Yes Type Integer Default Value 200 Minimum Value 0 Maximum Value 4294967295