## Summary **No review yet** ## Minimized query ```sql SAVEPOINT sp8595; SAVEPOINT sp6434; CREATE TABLE T ( a TEXT, b TEXT ); INSERT INTO T VALUES ('a','b'), ('c','d'); SELECT * FROM T WHERE a <= REPLACE('a;',';','') AND b = 'b'; SELECT GROUP_CONCAT(b, '|') FROM T; ROLLBACK TRANSACTION TO SAVEPOINT sp6434; RELEASE SAVEPOINT sp6434; ROLLBACK TRANSACTION TO SAVEPOINT sp8595; RELEASE SAVEPOINT sp8595; ``` ## Actual output ```sql Memory Used: 62608 (max 62608) bytes Number of Outstanding Allocations: 122 (max 122) Number of Pcache Overflow Bytes: 4104 (max 4104) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4104 bytes Lookaside Slots Used: 37 (max 37) Successful lookaside attempts: 37 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 4904 bytes Page cache hits: 0 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Schema Heap Usage: 0 bytes Statement Heap/Lookaside Usage: 2656 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 3 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2656 Bytes received by read(): 6663 Bytes sent to write(): 0 Read() system calls: 13 Write() system calls: 0 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 62608 (max 62608) bytes Number of Outstanding Allocations: 122 (max 122) Number of Pcache Overflow Bytes: 4104 (max 4104) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4104 bytes Lookaside Slots Used: 38 (max 38) Successful lookaside attempts: 42 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 4904 bytes Page cache hits: 0 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Schema Heap Usage: 0 bytes Statement Heap/Lookaside Usage: 2656 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 3 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2656 Bytes received by read(): 6757 Bytes sent to write(): 1285 Read() system calls: 15 Write() system calls: 1 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 86232 (max 86752) bytes Number of Outstanding Allocations: 171 (max 176) Number of Pcache Overflow Bytes: 16928 (max 16928) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4360 bytes Lookaside Slots Used: 34 (max 90) Successful lookaside attempts: 117 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13592 bytes Page cache hits: 4 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Schema Heap Usage: 1008 bytes Statement Heap/Lookaside Usage: 2416 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 30 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2416 Bytes received by read(): 7110 Bytes sent to write(): 2573 Read() system calls: 18 Write() system calls: 2 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 83840 (max 86752) bytes Number of Outstanding Allocations: 160 (max 176) Number of Pcache Overflow Bytes: 16928 (max 16928) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4360 bytes Lookaside Slots Used: 44 (max 90) Successful lookaside attempts: 143 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13592 bytes Page cache hits: 1 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Schema Heap Usage: 1032 bytes Statement Heap/Lookaside Usage: 3424 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 24 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 3424 Bytes received by read(): 7207 Bytes sent to write(): 3869 Read() system calls: 20 Write() system calls: 3 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 a|b Memory Used: 83840 (max 86752) bytes Number of Outstanding Allocations: 160 (max 176) Number of Pcache Overflow Bytes: 16928 (max 16928) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4360 bytes Lookaside Slots Used: 53 (max 90) Successful lookaside attempts: 200 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13592 bytes Page cache hits: 1 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Schema Heap Usage: 1032 bytes Statement Heap/Lookaside Usage: 5648 bytes Fullscan Steps: 1 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 24 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 5648 Bytes received by read(): 7304 Bytes sent to write(): 5165 Read() system calls: 22 Write() system calls: 4 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 b|d Memory Used: 83840 (max 86752) bytes Number of Outstanding Allocations: 160 (max 176) Number of Pcache Overflow Bytes: 16928 (max 16928) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4360 bytes Lookaside Slots Used: 44 (max 90) Successful lookaside attempts: 231 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13592 bytes Page cache hits: 1 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Schema Heap Usage: 1032 bytes Statement Heap/Lookaside Usage: 3424 bytes Fullscan Steps: 1 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 18 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 3424 Bytes received by read(): 7401 Bytes sent to write(): 6465 Read() system calls: 24 Write() system calls: 5 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 82784 (max 86752) bytes Number of Outstanding Allocations: 134 (max 176) Number of Pcache Overflow Bytes: 16928 (max 16928) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4360 bytes Lookaside Slots Used: 38 (max 90) Successful lookaside attempts: 235 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13592 bytes Page cache hits: 0 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Schema Heap Usage: 0 bytes Statement Heap/Lookaside Usage: 2656 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 3 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2656 Bytes received by read(): 7498 Bytes sent to write(): 7765 Read() system calls: 26 Write() system calls: 6 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 77104 (max 86752) bytes Number of Outstanding Allocations: 128 (max 176) Number of Pcache Overflow Bytes: 16928 (max 16928) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4360 bytes Lookaside Slots Used: 37 (max 90) Successful lookaside attempts: 239 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13592 bytes Page cache hits: 0 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Schema Heap Usage: 0 bytes Statement Heap/Lookaside Usage: 2656 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 3 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2656 Bytes received by read(): 7595 Bytes sent to write(): 9057 Read() system calls: 28 Write() system calls: 7 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 77104 (max 86752) bytes Number of Outstanding Allocations: 128 (max 176) Number of Pcache Overflow Bytes: 16928 (max 16928) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4360 bytes Lookaside Slots Used: 37 (max 90) Successful lookaside attempts: 243 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13592 bytes Page cache hits: 0 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Schema Heap Usage: 0 bytes Statement Heap/Lookaside Usage: 2656 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 3 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2656 Bytes received by read(): 7692 Bytes sent to write(): 10349 Read() system calls: 30 Write() system calls: 8 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 71072 (max 86752) bytes Number of Outstanding Allocations: 124 (max 176) Number of Pcache Overflow Bytes: 12568 (max 16928) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4360 bytes Lookaside Slots Used: 36 (max 90) Successful lookaside attempts: 247 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 9248 bytes Page cache hits: 0 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Schema Heap Usage: 0 bytes Statement Heap/Lookaside Usage: 2656 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 2 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2656 Bytes received by read(): 7790 Bytes sent to write(): 11642 Read() system calls: 33 Write() system calls: 9 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 ``` ## Expectation ```sql Memory Used: 63416 (max 63416) bytes Number of Outstanding Allocations: 132 (max 132) Number of Pcache Overflow Bytes: 4104 (max 4104) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4104 bytes Lookaside Slots Used: 53 (max 53) Successful lookaside attempts: 53 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 4904 bytes Page cache hits: 0 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Temporary data spilled to disk: 0 Schema Heap Usage: 0 bytes Statement Heap/Lookaside Usage: 2656 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 4 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2656 Bytes received by read(): 7439 Bytes sent to write(): 0 Read() system calls: 14 Write() system calls: 0 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 63416 (max 63416) bytes Number of Outstanding Allocations: 132 (max 132) Number of Pcache Overflow Bytes: 4104 (max 4104) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4104 bytes Lookaside Slots Used: 54 (max 54) Successful lookaside attempts: 58 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 4904 bytes Page cache hits: 0 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Temporary data spilled to disk: 0 Schema Heap Usage: 0 bytes Statement Heap/Lookaside Usage: 2656 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 4 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2656 Bytes received by read(): 7533 Bytes sent to write(): 1324 Read() system calls: 16 Write() system calls: 1 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 86688 (max 87200) bytes Number of Outstanding Allocations: 181 (max 186) Number of Pcache Overflow Bytes: 16936 (max 16936) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4368 bytes Lookaside Slots Used: 50 (max 99) Successful lookaside attempts: 126 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13608 bytes Page cache hits: 4 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Temporary data spilled to disk: 0 Schema Heap Usage: 856 bytes Statement Heap/Lookaside Usage: 2304 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 30 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2304 Bytes received by read(): 7630 Bytes sent to write(): 2651 Read() system calls: 18 Write() system calls: 2 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 84392 (max 87200) bytes Number of Outstanding Allocations: 170 (max 186) Number of Pcache Overflow Bytes: 16936 (max 16936) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4368 bytes Lookaside Slots Used: 61 (max 99) Successful lookaside attempts: 158 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13608 bytes Page cache hits: 1 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Temporary data spilled to disk: 0 Schema Heap Usage: 864 bytes Statement Heap/Lookaside Usage: 4624 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 24 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 4624 Bytes received by read(): 7727 Bytes sent to write(): 3985 Read() system calls: 20 Write() system calls: 3 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 a|b Memory Used: 84392 (max 87200) bytes Number of Outstanding Allocations: 170 (max 186) Number of Pcache Overflow Bytes: 16936 (max 16936) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4368 bytes Lookaside Slots Used: 65 (max 99) Successful lookaside attempts: 211 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13608 bytes Page cache hits: 1 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Temporary data spilled to disk: 0 Schema Heap Usage: 864 bytes Statement Heap/Lookaside Usage: 5136 bytes Fullscan Steps: 1 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 24 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 5136 Bytes received by read(): 7824 Bytes sent to write(): 5319 Read() system calls: 22 Write() system calls: 4 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 b|d Memory Used: 84392 (max 87200) bytes Number of Outstanding Allocations: 170 (max 186) Number of Pcache Overflow Bytes: 16936 (max 16936) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4368 bytes Lookaside Slots Used: 59 (max 99) Successful lookaside attempts: 241 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13608 bytes Page cache hits: 1 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Temporary data spilled to disk: 0 Schema Heap Usage: 864 bytes Statement Heap/Lookaside Usage: 3296 bytes Fullscan Steps: 1 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 18 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 3296 Bytes received by read(): 7921 Bytes sent to write(): 6657 Read() system calls: 24 Write() system calls: 5 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 83528 (max 87200) bytes Number of Outstanding Allocations: 144 (max 186) Number of Pcache Overflow Bytes: 16936 (max 16936) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4368 bytes Lookaside Slots Used: 54 (max 99) Successful lookaside attempts: 245 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13608 bytes Page cache hits: 0 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Temporary data spilled to disk: 0 Schema Heap Usage: 0 bytes Statement Heap/Lookaside Usage: 2656 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 4 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2656 Bytes received by read(): 8018 Bytes sent to write(): 7995 Read() system calls: 26 Write() system calls: 6 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 77896 (max 87200) bytes Number of Outstanding Allocations: 138 (max 186) Number of Pcache Overflow Bytes: 16936 (max 16936) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4368 bytes Lookaside Slots Used: 53 (max 99) Successful lookaside attempts: 249 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13608 bytes Page cache hits: 0 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Temporary data spilled to disk: 0 Schema Heap Usage: 0 bytes Statement Heap/Lookaside Usage: 2656 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 4 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2656 Bytes received by read(): 8115 Bytes sent to write(): 9326 Read() system calls: 28 Write() system calls: 7 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 77896 (max 87200) bytes Number of Outstanding Allocations: 138 (max 186) Number of Pcache Overflow Bytes: 16936 (max 16936) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4368 bytes Lookaside Slots Used: 53 (max 99) Successful lookaside attempts: 253 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 13608 bytes Page cache hits: 0 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Temporary data spilled to disk: 0 Schema Heap Usage: 0 bytes Statement Heap/Lookaside Usage: 2656 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 4 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2656 Bytes received by read(): 8212 Bytes sent to write(): 10657 Read() system calls: 30 Write() system calls: 8 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 Memory Used: 71880 (max 87200) bytes Number of Outstanding Allocations: 134 (max 186) Number of Pcache Overflow Bytes: 12568 (max 16936) bytes Largest Allocation: 48000 bytes Largest Pcache Allocation: 4368 bytes Lookaside Slots Used: 52 (max 99) Successful lookaside attempts: 257 Lookaside failures due to size: 0 Lookaside failures due to OOM: 0 Pager Heap Usage: 9256 bytes Page cache hits: 0 Page cache misses: 0 Page cache writes: 0 Page cache spills: 0 Temporary data spilled to disk: 0 Schema Heap Usage: 0 bytes Statement Heap/Lookaside Usage: 2656 bytes Fullscan Steps: 0 Sort Operations: 0 Autoindex Inserts: 0 Virtual Machine Steps: 3 Reprepare operations: 0 Number of times run: 1 Memory used by prepared stmt: 2656 Bytes received by read(): 8310 Bytes sent to write(): 11989 Read() system calls: 33 Write() system calls: 9 Bytes read from storage: 0 Bytes written to storage: 0 Cancelled write bytes: 0 ``` ## Flag ``` -stats ```