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Class for sending data from server to client (Protocol) This handles both the old ( <= 4.0 ) protocol and then new binary protocol that is used for prepared statements. libmysql/libmysql.c: Jump over reserved bits in the binary protocol libmysqld/Makefile.am: rename of net_pkg.cc to protocol.cc mysql-test/r/case.result: Fixed previously wrong test mysql-test/r/cast.result: Fixed previously wrong test sql/Makefile.am: Rename of net_pkg.cc to protocol.cc sql/field.cc: Binary protocol Added key handling functions for new VARCHAR type sql/field.h: New protocol sql/ha_berkeley.cc: New protocol sql/ha_berkeley.h: New protocol sql/ha_innodb.cc: New protocol sql/ha_myisam.cc: New protocol sql/item.cc: New protocol sql/item.h: New protocol sql/item_func.cc: Removed old code from 3.23 sql/item_func.h: Set cached_result_type as it was previosly used before set sql/item_subselect.cc: Standard make_field() is now good enough sql/item_subselect.h: Use default make_field() sql/item_sum.cc: Clean up Item_sum::make_field() sql/item_sum.h: Use standard make_field() sql/item_timefunc.h: return correct types for casts() Use standard make_field() sql/log_event.cc: New protocol sql/log_event.h: New protocol sql/mysql_priv.h: Move things to protocol.h sql/opt_range.cc: Indentation cleanups + small optimization sql/procedure.h: Use MYSQL_TYPE instead of FIELD_TYPE sql/protocol.cc: Class for sending data from server to client. This handles both the old ( <= 4.0 ) protocol and then new binary protocol that is used for prepared statements. sql/repl_failsafe.cc: New protocol sql/slave.cc: New protocol sql/sql_acl.cc: New protocol sql/sql_base.cc: Move send_fields() to protocol.cc sql/sql_class.cc: New protocol sql/sql_class.h: New protocol sql/sql_db.cc: New protocol sql/sql_error.cc: New protocol sql/sql_handler.cc: New protocol sql/sql_help.cc: New protocol sql/sql_parse.cc: Remove wrong assert (variable was not initalized at this point) sql/sql_prepare.cc: New protocol sql/sql_repl.cc: New protocol sql/sql_select.cc: New protocol sql/sql_show.cc: New protocol sql/sql_string.h: New functions used by the protocol functions sql/sql_table.cc: New protocol sql/structs.h: Make second_part ulong to prepare for ANSI sub-seconds sql/time.cc: New convert function needed by the new protocol functions
65 lines
2.3 KiB
Text
65 lines
2.3 KiB
Text
drop table if exists t1;
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select CASE "b" when "a" then 1 when "b" then 2 END;
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CASE "b" when "a" then 1 when "b" then 2 END
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2
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select CASE "c" when "a" then 1 when "b" then 2 END;
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CASE "c" when "a" then 1 when "b" then 2 END
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NULL
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select CASE "c" when "a" then 1 when "b" then 2 ELSE 3 END;
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CASE "c" when "a" then 1 when "b" then 2 ELSE 3 END
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3
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select CASE BINARY "b" when "a" then 1 when "B" then 2 WHEN "b" then "ok" END;
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CASE BINARY "b" when "a" then 1 when "B" then 2 WHEN "b" then "ok" END
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0
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select CASE "b" when "a" then 1 when binary "B" then 2 WHEN "b" then "ok" END;
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CASE "b" when "a" then 1 when binary "B" then 2 WHEN "b" then "ok" END
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0
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select CASE concat("a","b") when concat("ab","") then "a" when "b" then "b" end;
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CASE concat("a","b") when concat("ab","") then "a" when "b" then "b" end
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a
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select CASE when 1=0 then "true" else "false" END;
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CASE when 1=0 then "true" else "false" END
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false
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select CASE 1 when 1 then "one" WHEN 2 then "two" ELSE "more" END;
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CASE 1 when 1 then "one" WHEN 2 then "two" ELSE "more" END
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one
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select CASE 2.0 when 1 then "one" WHEN 2.0 then "two" ELSE "more" END;
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CASE 2.0 when 1 then "one" WHEN 2.0 then "two" ELSE "more" END
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two
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select (CASE "two" when "one" then "1" WHEN "two" then "2" END) | 0;
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(CASE "two" when "one" then "1" WHEN "two" then "2" END) | 0
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2
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select (CASE "two" when "one" then 1.00 WHEN "two" then 2.00 END) +0.0;
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(CASE "two" when "one" then 1.00 WHEN "two" then 2.00 END) +0.0
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2.00
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select case 1/0 when "a" then "true" else "false" END;
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case 1/0 when "a" then "true" else "false" END
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false
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select case 1/0 when "a" then "true" END;
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case 1/0 when "a" then "true" END
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NULL
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select (case 1/0 when "a" then "true" END) | 0;
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(case 1/0 when "a" then "true" END) | 0
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NULL
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select (case 1/0 when "a" then "true" END) + 0.0;
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(case 1/0 when "a" then "true" END) + 0.0
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NULL
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select case when 1>0 then "TRUE" else "FALSE" END;
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case when 1>0 then "TRUE" else "FALSE" END
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TRUE
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select case when 1<0 then "TRUE" else "FALSE" END;
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case when 1<0 then "TRUE" else "FALSE" END
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FALSE
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create table t1 (a int);
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insert into t1 values(1),(2),(3),(4);
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select case a when 1 then 2 when 2 then 3 else 0 end as fcase, count(*) from t1 group by fcase;
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fcase count(*)
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0 2
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2 1
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3 1
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select case a when 1 then "one" when 2 then "two" else "nothing" end as fcase, count(*) from t1 group by fcase;
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fcase count(*)
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nothing 2
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one 1
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two 1
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drop table t1;
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