使用Python从SAP Hana加载数据时出现语法错误

我在通过Python从SAP HANA加载数据时遇到问题。 代码在如下情况下运行良好：

connection = pyhdb.connect(|||credentials|||)
cursor = connection.cursor()
cursor.execute('SELECT "0COMP_CODE", "0VENDOR", "0REF_DOC_NO", "0BBP_INV_ID" FROM  "_SYS_BIC"."system-local.bw.bw2hana/ZFGL01MY" WHERE CAST( "0PSTNG_DATE" AS date) >= ADD_MONTHS( NEXT_DAY( LAST_DAY( CURRENT_DATE)), -2) and "0VENDOR" IS NOT NULL')

但当我试图添加“0COMP_CODE”=“B2B”这样的条件时

看起来是这样的：

Connection = pyhdb.connect(|||credentials|||)
cursor = connection.cursor()
cursor.execute('SELECT "0COMP_CODE", "0VENDOR", "0REF_DOC_NO", "0BBP_INV_ID" FROM  "_SYS_BIC"."system-local.bw.bw2hana/ZFGL01MY" WHERE CAST( "0PSTNG_DATE" AS date) >= ADD_MONTHS( NEXT_DAY( LAST_DAY( CURRENT_DATE)), -2) and "0VENDOR" IS NOT NULL AND "0COMP_CODE" = 'B2B' ')

我得到

语法错误：无效语法。

我做错了什么

---

谢谢。

尝试替换单引号：

Connection = pyhdb.connect(|||credentials|||)
cursor = connection.cursor()
cursor.execute('SELECT "0COMP_CODE", "0VENDOR", "0REF_DOC_NO", "0BBP_INV_ID" FROM  "_SYS_BIC"."system-local.bw.bw2hana/ZFGL01MY" WHERE CAST( "0PSTNG_DATE" AS date) >= ADD_MONTHS( NEXT_DAY( LAST_DAY( CURRENT_DATE)), -2) and "0VENDOR" IS NOT NULL AND "0COMP_CODE" = \'B2B\' ')

---

你能发布返回错误的代码吗？这似乎与引用有关。。。