Web23 de mai. de 2024 · Android Studio动态申请存储权限 软件首次安装在有新版本时，下载新版本出错，查看错误后发现是读写存储权限未授予，到设置中手动给权限后下载就会正 … WebOn "INSERT INTO ON DUPLICATE KEY UPDATE" queries, though one may expect affected_rows to return only 0 or 1 per row on successful queries, it may in fact return 2. From Mysql manual: "With ON DUPLICATE KEY UPDATE, the affected-rows value per row is 1 if the row is inserted as a new row and 2 if an existing row is updated."

Python cursor’s fetchall, fetchmany (), fetchone () to read …

Web16 de out. de 2011 · @cgseller If you want to use multiple commands (like pipelines or lists ;, &, &&, ) between if and then you simply put them there like this: if ssh invalid logger ; then echo "hi"; fi--- If you really want to enclose the command list once more you can use the curly {} or round brackets. --- The construct $(ssh invalid logger) is replaced by the … Web24 de ago. de 2024 · To use the find command inside an if condition, you can try this one liner : [[ ! -z `find 'YOUR_DIR/' -name 'something'` ]] && echo "found" echo "not found ... phone number for disability tax credit

PostgreSQL: Documentation: 9.1: Basic Statements

Web39.5.2. Executing a Command With No Result. For any SQL command that does not return rows, for example INSERT without a RETURNING clause, you can execute the command within a PL/pgSQL function just by writing the command. Any PL/pgSQL variable name appearing in the command text is treated as a parameter, and then the current value of … Web7 de mar. de 2011 · If you only need to know if the command succeeded or failed, don't bother testing $?, just test the command directly. E.g.: if some_command; then printf 'some_command succeeded\n' else printf 'some_command failed\n' fi. And assigning the output to a variable doesn't change the return value (well, unless it behaves differently … phone number for discount auto in leesburg