Heathcliff questions

• Why does my signal handler only execute once?
• Performance: multiple conditional WHERE clauses, or dynamic query?
• VS2019 error with SQL Change Automation: "Keyword not supported: 'multiple active result sets'"
• DatePicker options "changemonth" and "changeyear" not working in jqGrid's edit form
• "Warning: Can't find linker symbol for virtual table for value XXX value" using GCC and GDB (CodeBlocks)
• "Undefined reference to" template class constructor [duplicate]
• Why do CONTAINS and LIKE return different results?

Heathcliff answers