引号：发生了语法错误。 SQLCODE=-201

Question

我正在尝试做这样的事情：

query = (
"select mandant,posnr,"
"lieferbedingung,nrkreis_nr"
"from eakopf_t where posnr[10,10] = \" \" , and posnr[1,2] not in (\"99\",\"RE\",\"UB\")"
"and mandant <> 999;"
)

queryset += [(query, filename)]



df = pd.read_sql(query, engine.connect())

但我收到此错误：

SQLNumResultCols failed: [IBM][CLI Driver][IDS/UNIX64] A syntax error has occurred. SQLCODE=-201

我猜它是因为引号，但我不知道如何修改它。 我已经尝试过不使用反斜杠了

[SQL: select mandant,posnr,systemdat,fk_kto_auf,fk_kto_not1,fk_kto_not2,fk_kto_empf,fk_kto_adr5,fk_kto_adr6,fk_kto_adr7,fk_kto_adr8,fk_kto_adr9,adr_auftraggeber,anzahl_kolli,volumen,gewicht,lieferbedingung,aufdat,ankdat,versandort,modus,ladehafen,loeschhafen,bereich,nrkreis_nr from eakopf_t where posnr[10,10] = " " , and posnr[1,2] not in ("99","RE","UB") and mandant <> 999;]

Answer 1

你有：

query = (
"select mandant,posnr,"
"lieferbedingung,nrkreis_nr"
"from eakopf_t where posnr[10,10] = \" \" , and posnr[1,2] not in (\"99\",\"RE\",\"UB\")"
"and mandant <> 999;"
)

nrkreis_nr 和 from 之间没有空格分隔，因此打印的查询将包含：

select mandant,posnr,lieferbedingung,nrkreis_nrfrom eakopf_t where …

最好在每个续行的开头（或结尾）放置空格：

query = (
"select mandant, posnr,"
" lieferbedingung, nrkreis_nr"
" from eakopf_t where posnr[10,10] = \" \" and posnr[1,2] not in (\"99\",\"RE\",\"UB\")"
" and mandant <> 999;"
)

当一行行尾或下一行行首有标点符号时不需要（所以字符串第一行末尾的逗号表示下一行开头的空格不是强制），但这是最安全的。

我还删除了一个杂散的逗号和空格：

"from eakopf_t where posnr[10,10] = \" \" , and posnr[1,2] not in (\"99\",\"RE\",\"UB\")"